/usr/bin/testssl is in testssl.sh 2.6+dfsg1-2.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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#
# vim:ts=5:sw=5
# use vim and you will see everything beautifully indented with a 5 char tab
[ -z "$BASH_VERSINFO" ] && printf "\n\033[1;35m Please make sure you're using \"bash\"! Bye...\033[m\n\n" >&2 && exit 245
[ $(kill -l | grep -c SIG) -eq 0 ] && printf "\n\033[1;35m Please make sure you're calling me without leading \"sh\"! Bye...\033[m\n\n" >&2 && exit 245
# testssl.sh is a program for spotting weak SSL encryption, ciphers, version and some
# vulnerabilities or features
#
# Devel version is available from https://github.com/drwetter/testssl.sh
# Stable version from https://testssl.sh
# Please file bugs at github! https://github.com/drwetter/testssl.sh/issues
# Main author: Dirk Wetter, copyleft: 2007-today, contributions so far see CREDIT.md
#
# License: GPLv2, see http://www.fsf.org/licensing/licenses/info/GPLv2.html
# and accompanying license "LICENSE.txt". Redistribution + modification under this
# license permitted.
# If you enclose this script or parts of it in your software, it has to
# be accompanied by the same license (see link) and the place where to get
# the recent version of this program. Do not violate the license!
#
# USAGE WITHOUT ANY WARRANTY, THE SOFTWARE IS PROVIDED "AS IS". USE IT AT
# your OWN RISK!
# HISTORY:
# Back in 2006 it all started with a few openssl commands...
# That's because openssl is a such a good swiss army knife (see e.g.
# wiki.openssl.org/index.php/Command_Line_Utilities) that it was difficult to resist
# wrapping some shell commands around it, which I used for my pen tests. This is how
# everything started.
# Now it has grown up, it has bash socket support for some features which basically replacing
# more and more functions of OpenSSL and will serve as some kind of library in the future.
# The socket checks in bash may sound cool and unique -- they are -- but probably you
# can achieve e.g. the same result with my favorite interactive shell: zsh (zmodload zsh/net/socket
# -- checkout zsh/net/tcp) too!
# /bin/bash though is way more often used within Linux and it's perfect
# for cross platform support, see MacOS X and also under Windows the MSYS2 extension or Cygwin.
# Cross-platform is one of the three main goals of this script. Second: Ease of installation.
# No compiling, install gems, go to CPAN, use pip etc. Third: Easy to use and to interpret
# the results.
# Did I mention it's open source?
# Q: So what's the difference to www.ssllabs.com/ssltest/ or sslcheck.globalsign.com/ ?
# A: As of now ssllabs only check 1) webservers 2) on standard ports, 3) reachable from the
# internet. And those examples above 4) are 3rd parties. If these restrictions are all fine
# with you and you need a management compatible rating -- go ahead and use those.
# But also if your fine with those restrictions: testssl.sh is meant as a tool in your hand
# and it's way more flexible.
#
# Oh, and did I mention testssl.sh is open source?
# Note that up to today there were a lot changes for "standard" openssl
# binaries: a lot of features (ciphers, protocols, vulnerabilities)
# are disabled as they'll impact security otherwise. For security
# testing though we need all broken features. testssl.sh will
# over time replace those checks with bash sockets -- however it's
# still recommended to use the supplied binaries or cook your own, see
# https://github.com/drwetter/testssl.sh/blob/master/bin/Readme.md .
# Don't worry if feature X is not available you'll get a warning about
# this missing feature! The idea is if this script can't tell something
# for sure it speaks up so that you have clear picture.
# debugging help:
readonly PS4='${LINENO}> ${FUNCNAME[0]:+${FUNCNAME[0]}(): }'
# make sure that temporary files are cleaned up after use in ANY case
trap "cleanup" QUIT EXIT
readonly VERSION="2.6"
readonly SWCONTACT="dirk aet testssl dot sh"
egrep -q "dev|rc" <<< "$VERSION" && \
SWURL="https://testssl.sh/dev/" ||
SWURL="https://testssl.sh/ "
readonly PROG_NAME=$(basename "$0")
readonly RUN_DIR=$(dirname "$0")
INSTALL_DIR=""
MAPPING_FILE_RFC=""
which git &>/dev/null && readonly GIT_REL=$(git log --format='%h %ci' -1 2>/dev/null | awk '{ print $1" "$2" "$3 }')
readonly CVS_REL=$(tail -5 "$0" | awk '/dirkw Exp/ { print $4" "$5" "$6}')
readonly CVS_REL_SHORT=$(tail -5 "$0" | awk '/dirkw Exp/ { print $4 }')
readonly SYSTEM=$(uname -s)
date --help >/dev/null 2>&1 && \
readonly HAS_GNUDATE=true || \
readonly HAS_GNUDATE=false
echo A | sed -E 's/A//' >/dev/null 2>&1 && \
readonly HAS_SED_E=true || \
readonly HAS_SED_E=false
TERM_DWITH=${COLUMNS:-$(tput cols)} # for future custom line wrapping
TERM_CURRPOS=0 # ^^^ we also need to find out the length or current pos in the line
# following variables make use of $ENV, e.g. OPENSSL=<myprivate_path_to_openssl> ./testssl.sh <host>
# 0 means (normally) true here. Some of the variables are also accessible with a command line switch
declare -x OPENSSL
COLOR=${COLOR:-2} # 2: Full color, 1: b/w+positioning, 0: no ESC at all
SHOW_EACH_C=${SHOW_EACH_C:-0} # where individual ciphers are tested show just the positively ones tested #FIXME: upside down value
SNEAKY=${SNEAKY:-false} # is the referer and useragent we leave behind just usual?
QUIET=${QUIET:-false} # don't output the banner. By doing this yiu acknowledge usage term appearing in the banner
SSL_NATIVE=${SSL_NATIVE:-false} # we do per default bash sockets where possible "true": switch back to "openssl native"
ASSUMING_HTTP=${ASSUMING_HTTP:-false} # in seldom cases (WAF, old servers, grumpy SSL) service detection fails. "True" enforces HTTP checks
DEBUG=${DEBUG:-0} # 1.: the temp files won't be erased.
# 2: list more what's going on (formerly: eq VERBOSE=1, VERBERR=true), lists some errors of connections
# 3: slight hexdumps + other info,
# 4: display bytes sent via sockets, 5: display bytes received via sockets, 6: whole 9 yards
WIDE=${WIDE:-false} # whether to display for some options the cipher or the table with hexcode/KX,Enc,strength etc.
HEADER_MAXSLEEP=${HEADER_MAXSLEEP:-5} # we wait this long before killing the process to retrieve a service banner / http header
readonly MAX_WAITSOCK=10 # waiting at max 10 seconds for socket reply
readonly CCS_MAX_WAITSOCK=5 # for the two CCS payload (each)
readonly HEARTBLEED_MAX_WAITSOCK=8 # for the heartbleed payload
STARTTLS_SLEEP=${STARTTLS_SLEEP:-1} # max time to wait on a socket replay for STARTTLS
FAST_STARTTLS=${FAST_STARTTLS:-true} #at the cost of reliabilty decrease the handshakes for STARTTLS
USLEEP_SND=${USLEEP_SND:-0.1} # sleep time for general socket send
USLEEP_REC=${USLEEP_REC:-0.2} # sleep time for general socket receive
CAPATH="${CAPATH:-/etc/ssl/certs/}" # Does nothing yet (FC has only a CA bundle per default, ==> openssl version -d)
FNAME=${FNAME:-""} # file name to read commands from
IKNOW_FNAME=false
HSTS_MIN=${HSTS_MIN:-179} # >179 days is ok for HSTS
HPKP_MIN=${HPKP_MIN:-30} # >=30 days should be ok for HPKP_MIN, practical hints?
readonly CLIENT_MIN_PFS=5 # number of ciphers needed to run a test for PFS
DAYS2WARN1=${DAYS2WARN1:-60} # days to warn before cert expires, threshold 1
DAYS2WARN2=${DAYS2WARN2:-30} # days to warn before cert expires, threshold 2
# further vars needed to follow
readonly NPN_PROTOs="spdy/4a2,spdy/3,spdy/3.1,spdy/2,spdy/1,http/1.1"
TEMPDIR=""
TMPFILE=""
ERRFILE=""
HOSTCERT=""
HEADERFILE=""
HEADERFILE_BREACH=""
LOGFILE=""
PROTOS_OFFERED=""
DETECTED_TLS_VERSION=""
SOCKREPLY=""
SOCK_REPLY_FILE=""
HEXC=""
NW_STR=""
LEN_STR=""
SNI=""
OSSL_VER="" # openssl version, will be auto-determined
OSSL_VER_MAJOR=0
OSSL_VER_MINOR=0
OSSL_VER_APPENDIX="none"
HAS_DH_BITS=true
HAS_SSL2=true #TODO: in the future we'll do the fastest possible test (openssl s_client -ssl2 is currently faster than sockets)
HAS_SSL3=true
PORT=443 # unless otherwise auto-determined, see below
NODE=""
NODEIP=""
IPADDRs=""
IP46ADDRs=""
LOCAL_A=false # does the $NODEIP ceom from /etc/hosts?
LOCAL_AAAA=false # does the IPv6 IP come from /etc/hosts?
XMPP_HOST=""
PROXY=""
PROXYIP=""
PROXYPORT=""
VULN_COUNT=0
readonly VULN_THRESHLD=1 # if bigger than this no we show a separate header in blue
IPS=""
SERVICE="" # is the server running an HTTP server, SMTP, POP or IMAP?
URI=""
STARTTLS_PROTOCOL=""
OPTIMAL_PROTO="" # we need this for IIS6 (sigh) and OpenSSL 1.02, otherwise some handshakes
# will fail, see https://github.com/PeterMosmans/openssl/issues/19#issuecomment-100897892
STARTTLS_OPTIMAL_PROTO="" # same for STARTTLS, see https://github.com/drwetter/testssl.sh/issues/188
TLS_TIME=""
TLS_NOW=""
HTTP_TIME=""
GET_REQ11=""
HEAD_REQ10=""
readonly UA_SNEAKY="Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)"
readonly UA_STD="Mozilla/5.0 (X11; Linux x86_64; rv:42.0) Gecko/19700101 Firefox/42.0"
# Devel stuff, see -q below
TLS_LOW_BYTE=""
HEX_CIPHER=""
# The various hexdump commands we need to replace xxd (BSD compatibility))
HEXDUMPVIEW=(hexdump -C) # This is used in verbose mode to see what's going on
HEXDUMP=(hexdump -ve '16/1 "%02x " " \n"') # This is used to analyze the reply
HEXDUMPPLAIN=(hexdump -ve '1/1 "%.2x"') # Replaces both xxd -p and tr -cd '[:print:]'
###### some hexbytes for bash network sockets follow ######
# 133 standard cipher + 4x GOST for TLS 1.2 and SPDY/NPN
readonly TLS12_CIPHER="
cc,14, cc,13, cc,15, c0,30, c0,2c, c0,28, c0,24, c0,14,
c0,0a, c0,22, c0,21, c0,20, 00,a5, 00,a3, 00,a1, 00,9f,
00,6b, 00,6a, 00,69, 00,68, 00,39, 00,38, 00,37, 00,36, 00,80, 00,81, 00,82, 00,83,
c0,77, c0,73, 00,c4, 00,c3, 00,c2, 00,c1, 00,88, 00,87,
00,86, 00,85, c0,32, c0,2e, c0,2a, c0,26, c0,0f, c0,05,
c0,79, c0,75, 00,9d, 00,3d, 00,35, 00,c0, 00,84, c0,2f,
c0,2b, c0,27, c0,23, c0,13, c0,09, c0,1f, c0,1e, c0,1d,
00,a4, 00,a2, 00,a0, 00,9e, 00,67, 00,40, 00,3f, 00,3e,
00,33, 00,32, 00,31, 00,30, c0,76, c0,72, 00,be, 00,bd,
00,bc, 00,bb, 00,9a, 00,99, 00,98, 00,97, 00,45, 00,44,
00,43, 00,42, c0,31, c0,2d, c0,29, c0,25, c0,0e, c0,04,
c0,78, c0,74, 00,9c, 00,3c, 00,2f, 00,ba, 00,96, 00,41,
00,07, c0,11, c0,07, 00,66, c0,0c, c0,02, 00,05, 00,04,
c0,12, c0,08, c0,1c, c0,1b, c0,1a, 00,16, 00,13, 00,10,
00,0d, c0,0d, c0,03, 00,0a, 00,63, 00,15, 00,12, 00,0f,
00,0c, 00,62, 00,09, 00,65, 00,64, 00,14, 00,11, 00,0e,
00,0b, 00,08, 00,06, 00,03, 00,ff"
# 76 standard cipher +4x GOST for SSLv3, TLS 1, TLS 1.1
readonly TLS_CIPHER="
c0,14, c0,0a, c0,22, c0,21, c0,20, 00,39, 00,38, 00,37,
00,36, 00,88, 00,87, 00,86, 00,85, c0,0f, c0,05, 00,35,
00,84, c0,13, c0,09, c0,1f, c0,1e, c0,1d, 00,33, 00,32, 00,80, 00,81, 00,82, 00,83,
00,31, 00,30, 00,9a, 00,99, 00,98, 00,97, 00,45, 00,44,
00,43, 00,42, c0,0e, c0,04, 00,2f, 00,96, 00,41, 00,07,
c0,11, c0,07, 00,66, c0,0c, c0,02, 00,05, 00,04, c0,12,
c0,08, c0,1c, c0,1b, c0,1a, 00,16, 00,13, 00,10, 00,0d,
c0,0d, c0,03, 00,0a, 00,63, 00,15, 00,12, 00,0f, 00,0c,
00,62, 00,09, 00,65, 00,64, 00,14, 00,11, 00,0e, 00,0b,
00,08, 00,06, 00,03, 00,ff"
readonly SSLv2_CLIENT_HELLO="
,80,34 # length (here: 52)
,01 # Client Hello
,00,02 # SSLv2
,00,1b # cipher spec length (here: 27 )
,00,00 # session ID length
,00,10 # challenge length
,05,00,80 # 1st cipher 9 cipher specs, only classical V2 ciphers are used here, see FIXME below
,03,00,80 # 2nd there are v3 in v2!!! : https://tools.ietf.org/html/rfc6101#appendix-E
,01,00,80 # 3rd Cipher specifications introduced in version 3.0 can be included in version 2.0 client hello messages using
,07,00,c0 # 4th the syntax below. [..] # V2CipherSpec (see Version 3.0 name) = { 0x00, CipherSuite }; !!!!
,08,00,80 # 5th
,06,00,40 # 6th
,04,00,80 # 7th
,02,00,80 # 8th
,00,00,00 # 9th
,29,22,be,b3,5a,01,8b,04,fe,5f,80,03,a0,13,eb,c4" # Challenge
# https://idea.popcount.org/2012-06-16-dissecting-ssl-handshake/ (client)
# FIXME: http://max.euston.net/d/tip_sslciphers.html
###### output functions ######
# a little bit of sanitzing with bash internal search&replace -- otherwise printf will hiccup at '%' and '--' does the rest.
out() { /usr/bin/printf -- "${1//%/%%}"; }
outln() { out "$1\n"; }
#TODO: Still no shell injection safe but if just run it from the cmd line: that's fine
# color print functions, see also http://www.tldp.org/HOWTO/Bash-Prompt-HOWTO/x329.html
pr_liteblue() { [[ "$COLOR" -eq 2 ]] && out "\033[0;34m$1" || out "$1"; pr_off; } # not yet used
pr_liteblueln() { pr_liteblue "$1"; outln; }
pr_blue() { [[ "$COLOR" -eq 2 ]] && out "\033[1;34m$1" || out "$1"; pr_off; } # used for head lines of single tests
pr_blueln() { pr_blue "$1"; outln; }
pr_litered() { [[ "$COLOR" -eq 2 ]] && out "\033[0;31m$1" || pr_bold "$1"; pr_off; } # this is bad
pr_literedln() { pr_litered "$1"; outln; }
pr_red() { [[ "$COLOR" -eq 2 ]] && out "\033[1;31m$1" || pr_bold "$1"; pr_off; } # oh, this is really bad
pr_redln() { pr_red "$1"; outln; }
pr_litemagenta() { [[ "$COLOR" -eq 2 ]] && out "\033[0;35m$1" || pr_underline "$1"; pr_off; } # local problem: one test cannot be done
pr_litemagentaln() { pr_litemagenta "$1"; outln; }
pr_magenta() { [[ "$COLOR" -eq 2 ]] && out "\033[1;35m$1" || pr_underline "$1"; pr_off; } # Fatal error: quitting because of this!
pr_magentaln() { pr_magenta "$1"; outln; }
pr_litecyan() { [[ "$COLOR" -eq 2 ]] && out "\033[0;36m$1" || out "$1"; pr_off; } # not yet used
pr_litecyanln() { pr_litecyan "$1"; outln; }
pr_cyan() { [[ "$COLOR" -eq 2 ]] && out "\033[1;36m$1" || out "$1"; pr_off; } # additional hint
pr_cyanln() { pr_cyan "$1"; outln; }
pr_litegreyln() { pr_litegrey "$1"; outln; }
pr_litegrey() { [[ "$COLOR" -eq 2 ]] && out "\033[0;37m$1" || out "$1"; pr_off; }
pr_grey() { [[ "$COLOR" -eq 2 ]] && out "\033[1;30m$1" || out "$1"; pr_off; }
pr_greyln() { pr_grey "$1"; outln; }
pr_litegreen() { [[ "$COLOR" -eq 2 ]] && out "\033[0;32m$1" || out "$1"; pr_off; } # This is good
pr_litegreenln() { pr_litegreen "$1"; outln; }
pr_green() { [[ "$COLOR" -eq 2 ]] && out "\033[1;32m$1" || out "$1"; pr_off; } # This is the best
pr_greenln() { pr_green "$1"; outln; }
pr_yellow() { [[ "$COLOR" -eq 2 ]] && out "\033[1;33m$1" || out "$1"; pr_off; } # academic or minor problem
pr_yellowln() { pr_yellow "$1"; outln; }
pr_brown() { [[ "$COLOR" -eq 2 ]] && out "\033[0;33m$1" || out "$1"; pr_off; } # it is not a bad problem but you shouldn't do this
pr_brownln() { pr_brown "$1"; outln; }
# color=1 functions
pr_off() { [[ "$COLOR" -ne 0 ]] && out "\033[m\c"; }
pr_bold() { [[ "$COLOR" -ne 0 ]] && out "\033[1m$1" || out "$1"; pr_off; }
pr_boldln() { pr_bold "$1" ; outln; }
pr_underline() { [[ "$COLOR" -ne 0 ]] && out "\033[4m$1" || out "$1"; pr_off; }
pr_reverse() { [[ "$COLOR" -ne 0 ]] && out "\033[7m$1" || out "$1"; pr_off; }
### colorswitcher (see e.g. https://linuxtidbits.wordpress.com/2008/08/11/output-color-on-bash-scripts/
### http://www.tldp.org/HOWTO/Bash-Prompt-HOWTO/x405.html
set_color_functions() {
local linux_tput=true
# empty vars if we have no color:
red=""
green=""
brown=""
blue=""
magenta=""
cyan=""
grey=""
yellow=""
off=""
bold=""
underline=""
tput sgr0 &>/dev/null || linux_tput=false
if [[ "$COLOR" -eq 2 ]]; then
if $linux_tput; then
red=$(tput setaf 1)
green=$(tput setaf 2)
brown=$(tput setaf 3)
blue=$(tput setaf 4)
magenta=$(tput setaf 5)
cyan=$(tput setaf 6)
grey=$(tput setaf 7)
yellow=$(tput setaf 3; tput bold)
else # this is a try for old BSD, see terminfo(5)
red=$(tput AF 1)
green=$(tput AF 2)
brown=$(tput AF 3)
blue=$(tput AF 4)
magenta=$(tput AF 5)
cyan=$(tput AF 6)
grey=$(tput AF 7)
yellow=$(tput AF 3; tput md)
fi
fi
if [[ "$COLOR" -ge 1 ]]; then
if $linux_tput; then
bold=$(tput bold)
underline=$(tput sgr 0 1)
off=$(tput sgr0)
else # this is a try for old BSD, see terminfo(5)
bold=$(tput md)
underline=$(tput us)
reverse=$(tput mr)
off=$(tput me)
fi
fi
}
###### helper function definitions ######
debugme() {
[[ $DEBUG -ge 2 ]] && "$@"
}
hex2dec() {
#/usr/bin/printf -- "%d" 0x"$1"
echo $((16#$1))
}
dec2hex() {
/usr/bin/printf -- "%x" "$1"
#echo $((0x$1))
}
# trim spaces for BSD and old sed
count_lines() {
echo "$1" | wc -l | sed 's/ //g'
}
count_words() {
echo "$1" | wc -w | sed 's/ //g'
}
count_ciphers() {
echo -n "$1" | sed 's/:/ /g' | wc -w | sed 's/ //g'
}
actually_supported_ciphers() {
$OPENSSL ciphers "$1" 2>/dev/null || echo ""
}
newline_to_spaces() {
echo "$1" | tr '\n' ' ' | sed 's/ $//'
}
strip_lf() {
echo "$1" | tr -d '\n' | tr -d '\r'
}
toupper() {
echo -n "$1" | tr 'a-z' 'A-Z'
}
# prints out multiple lines in $1, left aligned by spaces in $2
out_row_aligned() {
local first=true
echo "$1" | while read line; do
if $first; then
first=false
else
out "$2"
fi
outln "$line"
done
}
tmpfile_handle() {
if [[ "$DEBUG" -eq 0 ]]; then
rm $TMPFILE 2>/dev/null
[[ $ERRFILE =~ dev.null ]] || rm $ERRFILE
else
mv $TMPFILE "$TEMPDIR/$NODEIP.$1" 2>/dev/null
mv $ERRFILE "$TEMPDIR/$NODEIP.$(sed 's/\.txt//g' <<<"$1").errorlog" 2>/dev/null
fi
}
# arg1: line with comment sign, tabs and so on
filter_input() {
echo "$1" | sed -e 's/#.*$//' -e '/^$/d' | tr -d '\n' | tr -d '\t'
}
wait_kill(){
local pid=$1 # pid we wait for or kill
local maxsleep=$2 # how long we wait before killing
while true; do
[[ "$DEBUG" -ge 6 ]] && ps $pid
if ! ps $pid >/dev/null ; then
return 0 # process terminated before didn't reach $maxsleep
fi
sleep 1
maxsleep=$((maxsleep - 1))
test $maxsleep -le 0 && break
done # needs to be killed:
kill $pid >&2 2>/dev/null
wait $pid 2>/dev/null # make sure pid terminated, see wait(1p)
return 3 # means killed
}
###### check code starts here ######
# determines whether the port has an HTTP service running or not (plain TLS, no STARTTLS)
# arg1 could be the protocol determined as "working". IIS6 needs that
runs_HTTP() {
# SNI is nonsense for !HTTPS but fortunately other protocols don't seem to care
printf "$GET_REQ11" | $OPENSSL s_client $1 -quiet -connect $NODEIP:$PORT $PROXY $SNI >$TMPFILE 2>$ERRFILE &
wait_kill $! $HEADER_MAXSLEEP
head $TMPFILE | grep -aq ^HTTP && SERVICE=HTTP
head $TMPFILE | grep -aq SMTP && SERVICE=SMTP
head $TMPFILE | grep -aq POP && SERVICE=POP
head $TMPFILE | grep -aq IMAP && SERVICE=IMAP
head $TMPFILE | egrep -aqw "Jive News|InterNetNews|NNRP|INN" && SERVICE=NNTP
debugme head -50 $TMPFILE
# $TMPFILE contains also a banner which we could use if there's a need for it
out " Service detected: "
case $SERVICE in
HTTP)
out " $SERVICE"
ret=0 ;;
IMAP|POP|SMTP|NNTP)
out " $SERVICE, thus skipping HTTP specific checks"
ret=0 ;;
*) out " Couldn't determine what's running on port $PORT"
if $ASSUMING_HTTP; then
SERVICE=HTTP
out " -- ASSUMING_HTTP set though"
ret=0
else
out ", assuming no HTTP service => skipping HTTP checks"
ret=1
fi
;;
esac
outln
tmpfile_handle $FUNCNAME.txt
return $ret
}
#problems not handled: chunked
run_http_header() {
local header
local -i ret
local referer useragent
local url
outln; pr_blue "--> Testing HTTP header response"; outln " @ \"$URL_PATH\"\n"
[[ -z "$1" ]] && url="/" || url="$1"
if $SNEAKY; then
referer="http://google.com/"
useragent="$UA_SNEAKY"
else
referer="TLS/SSL-Tester from $SWURL"
useragent="$UA_STD"
fi
(
$OPENSSL s_client $OPTIMAL_PROTO -quiet -connect $NODEIP:$PORT $PROXY $SNI << EOF
GET $url HTTP/1.1
Host: $NODE
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-us,en;q=0.7,de-de;q=0.3
User-Agent: $useragent
Referer: $referer
Connection: close
EOF
) >$HEADERFILE 2>$ERRFILE &
if wait_kill $! $HEADER_MAXSLEEP; then
if ! egrep -iaq "XML|HTML|DOCTYPE|HTTP|Connection" $HEADERFILE; then
pr_litemagenta " likely HTTP header requests failed (#lines: $(wc -l < $HEADERFILE | sed 's/ //g'))."
outln "Rerun with DEBUG=1 and inspect \"run_http_header.txt\"\n"
debugme cat $HEADERFILE
ret=7
fi
sed -e '/^<HTML/,$d' -e '/^<html/,$d' -e '/^<XML /,$d' -e '/<?XML /,$d' \
-e '/^<xml /,$d' -e '/<?xml /,$d' -e '/^<\!DOCTYPE/,$d' -e '/^<\!doctype/,$d' $HEADERFILE >$HEADERFILE.2
#### ^^^ Attention: the filtering for the html body only as of now, doesn't work for other content yet
mv $HEADERFILE.2 $HEADERFILE # sed'ing in place doesn't work with BSD and Linux simultaneously
ret=0
else
#TODO: attention: if this runs into a timeout, we're dead. Try again differently:
printf "$GET_REQ11" | $OPENSSL s_client $OPTIMAL_PROTO -quiet -ign_eof -connect $NODEIP:$PORT $PROXY $SNI 1>$HEADERFILE 2>$ERRFILE
if [[ $? -ne 0 ]]; then
pr_litemagentaln " failed (1st request stalled, 2nd erroneous)"
return 3
#ret=3
fi
fi
status_code=$(awk '/^HTTP\// { print $2 }' $HEADERFILE 2>>$ERRFILE)
msg_thereafter=$(awk -F"$status_code" '/^HTTP\// { print $2 }' $HEADERFILE 2>>$ERRFILE) # dirty trick to use the status code as a
msg_thereafter=$(strip_lf "$msg_thereafter") # field separator, otherwise we need a loop with awk
debugme echo "Status/MSG: $status_code $msg_thereafter"
pr_bold " HTTP Status Code "
[[ -z "$status_code" ]] && pr_litemagentaln "No status code" && return 3
out " $status_code$msg_thereafter"
case $status_code in
301|302|307|308) out ", redirecting to \"$(grep -a '^Location' $HEADERFILE | sed 's/Location: //' | tr -d '\r\n')\"" ;;
200) ;;
206) out " -- WTF?" ;;
400) pr_litemagenta " (Hint: better try another URL)" ;;
401) grep -aq "^WWW-Authenticate" $HEADERFILE && out " "; strip_lf "$(grep -a "^WWW-Authenticate" $HEADERFILE)"
;;
403) ;;
404) out " (Hint: supply a path which doesn't give a \"$status_code$msg_thereafter\")" ;;
405) ;;
*) pr_litemagenta ". Oh, didn't expect a $status_code$msg_thereafter";;
esac
outln
# we don't call "tmpfile_handle $FUNCNAME.txt" as we need the header file in other functions!
return $ret
}
# Borrowed from Glenn Jackman, see https://unix.stackexchange.com/users/4667/glenn-jackman
detect_ipv4() {
local octet="(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])"
local ipv4address="$octet\\.$octet\\.$octet\\.$octet"
local your_ip_msg="(check if it's your IP address or e.g. a cluster IP)"
local result
local first=true
local spaces=" "
if [[ ! -s $HEADERFILE ]]; then
http_header "$1" || return 3
fi
# remove pagespeed header as it is mistakenly identified as ipv4 address https://github.com/drwetter/testssl.sh/issues/158
# also facebook has a CSP rule for 127.0.0.1
if egrep -vi "pagespeed|page-speed|Content-Security-Policy" $HEADERFILE | grep -iqE "$ipv4address"; then
pr_bold " IPv4 address in header "
while read line; do
result="$(grep -E "$ipv4address" <<< "$line")"
result=$(strip_lf "$result")
if [[ -n "$result" ]]; then
if ! $first; then
out "$spaces"
your_ip_msg=""
else
first=false
fi
pr_litered "$result"
outln "\n$spaces$your_ip_msg"
fi
done < $HEADERFILE
fi
}
run_http_date() {
local now difftime
if [[ ! -s $HEADERFILE ]]; then
run_http_header "$1" || return 3 # this is just for the line "Testing HTTP header response"
fi
pr_bold " HTTP clock skew "
if [[ $SERVICE != "HTTP" ]]; then
out "not tested as we're not targeting HTTP"
else
printf "$GET_REQ11" | $OPENSSL s_client $OPTIMAL_PROTO -ign_eof -connect $NODEIP:$PORT $PROXY $SNI &>$TMPFILE
now=$(date "+%s") # we need an ACCURATE date here and cannot rely on the headerfile!
HTTP_TIME=$(awk -F': ' '/^date:/ { print $2 } /^Date:/ { print $2 }' $TMPFILE)
if [[ -n "$HTTP_TIME" ]]; then
if $HAS_GNUDATE ; then
HTTP_TIME=$(date --date="$HTTP_TIME" "+%s")
else
HTTP_TIME=$(date -j -f "%a, %d %b %Y %T %Z" "$HTTP_TIME" "+%s" 2>>$ERRFILE) # the trailing \r confuses BSD flavors otherwise
fi
difftime=$((HTTP_TIME - $now))
[[ $difftime != "-"* ]] && [[ $difftime != "0" ]] && difftime="+$difftime"
out "$difftime sec from localtime";
else
out "Got no HTTP time, maybe try different URL?";
fi
debugme out " epoch: $HTTP_TIME"
fi
outln
detect_ipv4
}
includeSubDomains() {
if grep -aiqw includeSubDomains "$1"; then
pr_litegreen ", includeSubDomains"
else
pr_litecyan ", just this domain"
fi
}
preload() {
grep -aiqw preload "$1" && pr_litegreen ", preload"
}
run_hsts() {
local hsts_age_sec
local hsts_age_days
if [[ ! -s $HEADERFILE ]]; then
http_header "$1" || return 3
fi
#pr_bold " HSTS "
pr_bold " Strict Transport Security "
grep -iaw '^Strict-Transport-Security' $HEADERFILE >$TMPFILE
if [[ $? -eq 0 ]]; then
grep -aciw '^Strict-Transport-Security' $HEADERFILE | egrep -waq "1" || out "(two HSTS header, using 1st one) "
hsts_age_sec=$(sed -e 's/[^0-9]*//g' $TMPFILE | head -1)
#FIXME: test for number!
hsts_age_days=$(( hsts_age_sec / 86400))
if [[ $hsts_age_days -gt $HSTS_MIN ]]; then
pr_litegreen "$hsts_age_days days" ; out "=$hsts_age_sec s"
else
out "$hsts_age_sec s = "
pr_brown "$hsts_age_days days, <$HSTS_MIN days is too short"
fi
includeSubDomains "$TMPFILE"
preload "$TMPFILE"
#FIXME: To be checked against e.g. https://dxr.mozilla.org/mozilla-central/source/security/manager/boot/src/nsSTSPreloadList.inc
# and https://chromium.googlesource.com/chromium/src/+/master/net/http/transport_security_state_static.json
else
out "--"
fi
outln
tmpfile_handle $FUNCNAME.txt
return $?
}
run_hpkp() {
local -i hpkp_age_sec
local -i hpkp_age_days
local -i hpkp_nr_keys
local hpkp_key hpkp_key_hostcert
local spaces=" "
local key_found=false
local i
if [[ ! -s $HEADERFILE ]]; then
http_header "$1" || return 3
fi
#pr_bold " HPKP "
pr_bold " Public Key Pinning "
egrep -aiw '^Public-Key-Pins|Public-Key-Pins-Report-Only' $HEADERFILE >$TMPFILE
if [[ $? -eq 0 ]]; then
if egrep -aciw '^Public-Key-Pins|Public-Key-Pins-Report-Only' $HEADERFILE | egrep -waq "1" ; then
:
else
pr_brown "two HPKP headers: "
for i in $(newline_to_spaces "$(egrep -ai '^Public-Key-Pins' $HEADERFILE | awk -F':' '/Public-Key-Pins/ { print $1 }')"); do
pr_underline $i
out " "
done
out "\n$spaces using first "
pr_underline "$(awk -F':' '/Public-Key-Pins/ { print $1 }' $HEADERFILE | head -1), "
fi
# remove leading Public-Key-Pins*, any colons, double quotes and trailing spaces and taking the first -- whatever that is
sed -e 's/Public-Key-Pins://g' -e s'/Public-Key-Pins-Report-Only://' $TMPFILE | \
sed -e 's/;//g' -e 's/\"//g' -e 's/^ //' | head -1 > $TMPFILE.2
# BSD lacks -i, otherwise we would have done it inline
# now separate key value and other stuff per line:
tr ' ' '\n' < $TMPFILE.2 >$TMPFILE
hpkp_nr_keys=$(grep -ac pin-sha $TMPFILE)
out "# of keys: "
if [[ $hpkp_nr_keys -eq 1 ]]; then
pr_litered "1 (NOT ok), "
else
out "$hpkp_nr_keys, "
fi
# print key=value pair with awk, then strip non-numbers, to be improved with proper parsing of key-value with awk
hpkp_age_sec=$(awk -F= '/max-age/{max_age=$2; print max_age}' $TMPFILE | sed -E 's/[^[:digit:]]//g')
hpkp_age_days=$((hpkp_age_sec / 86400))
if [[ $hpkp_age_days -ge $HPKP_MIN ]]; then
pr_litegreen "$hpkp_age_days days" ; out "=$hpkp_age_sec s"
else
out "$hpkp_age_sec s = "
pr_brown "$hpkp_age_days days (<$HPKP_MIN days is not good enough)"
fi
includeSubDomains "$TMPFILE"
preload "$TMPFILE"
[[ -s "$HOSTCERT" ]] || get_host_cert
# get the key fingerprints
hpkp_key_hostcert="$($OPENSSL x509 -in $HOSTCERT -pubkey -noout | grep -v PUBLIC | \
$OPENSSL base64 -d | $OPENSSL dgst -sha256 -binary | $OPENSSL base64)"
while read hpkp_key; do
if [[ "$hpkp_key_hostcert" == "$hpkp_key" ]] || [[ "$hpkp_key_hostcert" == "$hpkp_key=" ]]; then
out "\n$spaces matching host key: "
pr_litegreen "$hpkp_key"
key_found=true
fi
debugme out "\n $hpkp_key | $hpkp_key_hostcert"
done < <(tr ';' '\n' < $TMPFILE | tr -d ' ' | tr -d '\"' | awk -F'=' '/pin.*=/ { print $2 }')
if ! $key_found ; then
out "\n$spaces"
pr_litered " No matching key for pins found "
out "(CAs pinned? -- not yet checked)"
fi
else
out "--"
fi
outln
tmpfile_handle $FUNCNAME.txt
return $?
}
emphasize_stuff_in_headers(){
# see http://www.grymoire.com/Unix/Sed.html#uh-3
# outln "$1" | sed "s/[0-9]*/$brown&$off/g"
outln "$1" | sed -e "s/\([0-9]\)/$brown\1$off/g" \
-e "s/Debian/"$yellow"\Debian$off/g" \
-e "s/Win32/"$yellow"\Win32$off/g" \
-e "s/Win64/"$yellow"\Win64$off/g" \
-e "s/Ubuntu/"$yellow"Ubuntu$off/g" \
-e "s/ubuntu/"$yellow"ubuntu$off/g" \
-e "s/jessie/"$yellow"jessie$off/g" \
-e "s/squeeze/"$yellow"squeeze$off/g" \
-e "s/wheezy/"$yellow"wheezy$off/g" \
-e "s/lenny/"$yellow"lenny$off/g" \
-e "s/SUSE/"$yellow"SUSE$off/g" \
-e "s/Red Hat Enterprise Linux/"$yellow"Red Hat Enterprise Linux$off/g" \
-e "s/Red Hat/"$yellow"Red Hat$off/g" \
-e "s/CentOS/"$yellow"CentOS$off/g" \
-e "s/Via/"$yellow"Via$off/g" \
-e "s/X-Forwarded/"$yellow"X-Forwarded$off/g" \
-e "s/Liferay-Portal/"$yellow"Liferay-Portal$off/g" \
-e "s/X-Cache-Lookup/"$yellow"X-Cache-Lookup$off/g" \
-e "s/X-Cache/"$yellow"X-Cache$off/g" \
-e "s/X-Squid/"$yellow"X-Squid$off/g" \
-e "s/X-Server/"$yellow"X-Server$off/g" \
-e "s/X-Varnish/"$yellow"X-Varnish$off/g" \
-e "s/X-OWA-Version/"$yellow"X-OWA-Version$off/g" \
-e "s/X-Version/"$yellow"X-Version$off/g" \
-e "s/X-Powered-By/"$yellow"X-Powered-By$off/g" \
-e "s/X-UA-Compatible/"$yellow"X-UA-Compatible$off/g" \
-e "s/X-AspNet-Version/"$yellow"X-AspNet-Version$off/g"
}
run_server_banner() {
local serverbanner
if [[ ! -s $HEADERFILE ]]; then
run_http_header "$1" || return 3
fi
pr_bold " Server banner "
grep -ai '^Server' $HEADERFILE >$TMPFILE
if [[ $? -eq 0 ]]; then
serverbanner=$(sed -e 's/^Server: //' -e 's/^server: //' $TMPFILE)
if [[ x"$serverbanner" == "x\n" ]] || [[ x"$serverbanner" == "x\n\r" ]] || [[ x"$serverbanner" == "x" ]]; then
outln "banner exists but empty string"
else
emphasize_stuff_in_headers "$serverbanner"
[[ "$serverbanner" = *Microsoft-IIS/6.* ]] && [[ $OSSL_VER == 1.0.2* ]] && \
pr_litemagentaln " It's recommended to run another test w/ OpenSSL 1.01 !"
# see https://github.com/PeterMosmans/openssl/issues/19#issuecomment-100897892
fi
# mozilla.github.io/server-side-tls/ssl-config-generator/
# https://support.microsoft.com/en-us/kb/245030
else
outln "(no \"Server\" line in header, interesting!)"
fi
tmpfile_handle $FUNCNAME.txt
return 0
}
run_rp_banner() {
local line
local first=true
local spaces=" "
if [[ ! -s $HEADERFILE ]]; then
run_http_header "$1" || return 3
fi
pr_bold " Reverse Proxy banner "
egrep -ai '^Via:|^X-Cache|^X-Squid|^X-Varnish:|^X-Server-Name:|^X-Server-Port:|^x-forwarded' $HEADERFILE >$TMPFILE
if [[ $? -ne 0 ]]; then
outln "--"
else
while read line; do
line=$(strip_lf "$line")
if ! $first; then
out "$spaces"
else
first=false
fi
emphasize_stuff_in_headers "$line"
done < $TMPFILE
fi
outln
tmpfile_handle $FUNCNAME.txt
return 0
# emphasize_stuff_in_headers "$(sed 's/^/ /g' $TMPFILE | tr '\n\r' ' ')" || \
}
run_application_banner() {
local line
local first=true
local spaces=" "
if [[ ! -s $HEADERFILE ]]; then
run_http_header "$1" || return 3
fi
pr_bold " Application banner "
egrep -ai '^X-Powered-By|^X-AspNet-Version|^X-Version|^Liferay-Portal|^X-OWA-Version' $HEADERFILE >$TMPFILE
if [[ $? -ne 0 ]]; then
outln "--"
else
cat $TMPFILE | while read line; do
line=$(strip_lf "$line")
if ! $first; then
out "$spaces"
else
first=false
fi
emphasize_stuff_in_headers "$line"
done
fi
tmpfile_handle $FUNCNAME.txt
return 0
}
run_cookie_flags() { # ARG1: Path, ARG2: path
local -i nr_cookies
local nr_httponly nr_secure
local negative_word
if [[ ! -s $HEADERFILE ]]; then
run_http_header "$1" || return 3
fi
pr_bold " Cookie(s) "
grep -ai '^Set-Cookie' $HEADERFILE >$TMPFILE
if [[ $? -eq 0 ]]; then
nr_cookies=$(wc -l < $TMPFILE | sed 's/ //g')
out "$nr_cookies issued: "
if [[ $nr_cookies -gt 1 ]]; then
negative_word="NONE"
else
negative_word="NOT"
fi
nr_secure=$(grep -iac secure $TMPFILE)
case $nr_secure in
0) pr_brown "$negative_word" ;;
[123456789]) pr_litegreen "$nr_secure/$nr_cookies";;
esac
out " secure, "
nr_httponly=$(grep -cai httponly $TMPFILE)
case $nr_httponly in
0) pr_brown "$negative_word" ;;
[123456789]) pr_litegreen "$nr_httponly/$nr_cookies";;
esac
out " HttpOnly"
else
out "(none issued at \"$1\")"
fi
outln
tmpfile_handle $FUNCNAME.txt
return 0
}
run_more_flags() {
local good_flags2test="X-Frame-Options X-XSS-Protection X-Content-Type-Options Content-Security-Policy X-Content-Security-Policy X-WebKit-CSP Content-Security-Policy-Report-Only"
local other_flags2test="Access-Control-Allow-Origin Upgrade X-Served-By X-UA-Compatible"
local egrep_pattern=""
local f2t result_str
local first=true
local spaces=" "
if [[ ! -s $HEADERFILE ]]; then
run_http_header "$1" || return 3
fi
pr_bold " Security headers "
# convert spaces to | (for egrep)
egrep_pattern=$(echo "$good_flags2test $other_flags2test"| sed -e 's/ /|\^/g' -e 's/^/\^/g')
egrep -ai "$egrep_pattern" $HEADERFILE >$TMPFILE
if [[ $? -ne 0 ]]; then
outln "--"
ret=1
else
#set -x
ret=0
for f2t in $good_flags2test; do
debugme echo "---> $f2t"
result_str=$(grep -wi "^$f2t" $TMPFILE | grep -vi "$f2t"-)
result_str=$(strip_lf "$result_str")
[[ -z "$result_str" ]] && continue
if ! $first; then
out "$spaces" # output leading spaces if the first header
else
first=false
fi
# extract and print key(=flag) in green:
pr_litegreen "${result_str%%:*}:"
#pr_litegreen "$(sed 's/:.*$/:/' <<< "$result_str")"
# print value in plain text:
outln "${result_str#*:}"
done
# now the same with other flags
for f2t in $other_flags2test; do
result_str=$(grep -i "^$f2t" $TMPFILE)
[[ -z "$result_str" ]] && continue
if ! $first; then
out "$spaces" # output leading spaces if the first header
else
first=false
fi
# extract and print key(=flag) underlined
pr_underline "${result_str%%:*}:"
# print value in plain text:
outln "${result_str#*:}"
done
fi
#TODO: I am not testing for the correctness or anything stupid yet, e.g. "X-Frame-Options: allowall"
tmpfile_handle $FUNCNAME.txt
return $ret
}
# #1: string with 2 opensssl codes, HEXC= same in NSS/ssllabs terminology
normalize_ciphercode() {
part1=$(echo "$1" | awk -F',' '{ print $1 }')
part2=$(echo "$1" | awk -F',' '{ print $2 }')
part3=$(echo "$1" | awk -F',' '{ print $3 }')
if [[ "$part1" == "0x00" ]]; then # leading 0x00
HEXC=$part2
else
#part2=$(echo $part2 | sed 's/0x//g')
part2=${part2//0x/}
if [[ -n "$part3" ]]; then # a SSLv2 cipher has three parts
#part3=$(echo $part3 | sed 's/0x//g')
part3=${part3//0x/}
fi
HEXC="$part1$part2$part3"
fi
#TODO: we should just echo this and avoid the global var HEXC
HEXC=$(echo $HEXC | tr 'A-Z' 'a-z' | sed 's/0x/x/') #tolower + strip leading 0
return 0
}
prettyprint_local() {
local arg
local hexcode dash ciph sslvers kx auth enc mac export
local re='^[0-9A-Fa-f]+$'
pr_blue "--> Displaying all local ciphers ";
if [[ -n "$1" ]]; then
[[ $1 =~ $re ]] && \
pr_blue "matching number pattern \"$1\" " || \
pr_blue "matching word pattern "\"$1\"" (ignore case)"
fi
outln "\n"
neat_header
if [[ -z "$1" ]]; then
$OPENSSL ciphers -V 'ALL:COMPLEMENTOFALL:@STRENGTH' 2>$ERRFILE | while read hexcode dash ciph sslvers kx auth enc mac export ; do # -V doesn't work with openssl < 1.0
normalize_ciphercode $hexcode
neat_list $HEXC $ciph $kx $enc
outln
done
else
#for arg in $(echo $@ | sed 's/,/ /g'); do
for arg in ${*//,/ /}; do
$OPENSSL ciphers -V 'ALL:COMPLEMENTOFALL:@STRENGTH' 2>$ERRFILE | while read hexcode dash ciph sslvers kx auth enc mac export ; do # -V doesn't work with openssl < 1.0
normalize_ciphercode $hexcode
# for numbers we don't do word matching:
[[ $arg =~ $re ]] && \
neat_list $HEXC $ciph $kx $enc | grep -ai "$arg" || \
neat_list $HEXC $ciph $kx $enc | grep -wai "$arg"
done
done
fi
outln
return 0
}
# list ciphers (and makes sure you have them locally configured)
# arg[1]: cipher list (or anything else)
listciphers() {
local -i ret
local debugname="$(sed -e s'/\!/not/g' -e 's/\:/_/g' <<< "$1")"
$OPENSSL ciphers "$1" &>$TMPFILE
ret=$?
debugme cat $TMPFILE
tmpfile_handle $FUNCNAME.$debugname.txt
return $ret
}
# argv[1]: cipher list to test
# argv[2]: string on console
# argv[3]: ok to offer? 0: yes, 1: no
std_cipherlists() {
local -i ret
local singlespaces
local debugname="$(sed -e s'/\!/not/g' -e 's/\:/_/g' <<< "$1")"
pr_bold "$2 " # indent in order to be in the same row as server preferences
if listciphers "$1"; then # is that locally available??
$OPENSSL s_client -cipher "$1" $STARTTLS -connect $NODEIP:$PORT $PROXY $SNI 2>$ERRFILE >$TMPFILE </dev/null
ret=$?
debugme cat $ERRFILE
case $3 in
0) # ok to offer
[[ $ret -eq 0 ]] && \
pr_greenln "offered (OK)" || \
pr_brownln "not offered (NOT ok)" ;;
1) # the ugly ones
[[ $ret -eq 0 ]] && \
pr_redln "offered (NOT ok)" || \
pr_greenln "not offered (OK)" ;;
2) # bad but not worst
[[ $ret -eq 0 ]] && \
pr_literedln "offered (NOT ok)" || \
pr_litegreenln "not offered (OK)" ;;
3) # not totally bad
[[ $ret -eq 0 ]] && \
pr_brownln "offered (NOT ok)" || \
outln "not offered (OK)" ;;
*) # we shouldn't reach this
pr_litemagenta "? (please report this)" ;;
esac
tmpfile_handle $FUNCNAME.$debugname.txt
else
singlespaces=$(echo "$2" | sed -e 's/ \+/ /g' -e 's/^ //' -e 's/ $//g' -e 's/ //g')
local_problem "No $singlespaces configured in $OPENSSL"
fi
# we need lf in those cases:
[[ $DEBUG -ge 2 ]] && echo
}
# sockets inspired by http://blog.chris007.de/?p=238
# ARG1: hexbyte with a leading comma (!!), separated by commas
# ARG2: sleep
socksend() {
# the following works under BSD and Linux, which is quite tricky. So don't mess with it unless you're really sure what you do
if $HAS_SED_E; then
data=$(echo "$1" | sed -e 's/# .*$//g' -e 's/ //g' | sed -E 's/^[[:space:]]+//; s/[[:space:]]+$//; /^$/d' | sed 's/,/\\/g' | tr -d '\n')
else
data=$(echo "$1" | sed -e 's/# .*$//g' -e 's/ //g' | sed -r 's/^[[:space:]]+//; s/[[:space:]]+$//; /^$/d' | sed 's/,/\\/g' | tr -d '\n')
fi
[[ $DEBUG -ge 4 ]] && echo "\"$data\""
printf -- "$data" >&5 2>/dev/null &
sleep $2
}
#FIXME: This is only for HB and CCS, others use still sockread_serverhello()
sockread() {
local -i ret=0
local ddreply
[[ "x$2" == "x" ]] && maxsleep=$MAX_WAITSOCK || maxsleep=$2
ddreply=$(mktemp $TEMPDIR/ddreply.XXXXXX) || return 7
dd bs=$1 of=$ddreply count=1 <&5 2>/dev/null &
wait_kill $! $maxsleep
ret=$?
SOCKREPLY=$(cat $ddreply)
rm $ddreply
return $ret
}
show_rfc_style(){
local rfcname
[[ -z "$MAPPING_FILE_RFC" ]] && return 1
rfcname=$(grep -iw "$1" "$MAPPING_FILE_RFC" | sed -e 's/^.*TLS/TLS/' -e 's/^.*SSL/SSL/')
[[ -n "$rfcname" ]] && out "$rfcname"
return 0
}
neat_header(){
printf -- "Hexcode Cipher Suite Name (OpenSSL) KeyExch. Encryption Bits${MAPPING_FILE_RFC:+ Cipher Suite Name (RFC)}\n"
printf -- "%s-------------------------------------------------------------------------${MAPPING_FILE_RFC:+----------------------------------------------}\n"
}
# arg1: hexcode
# arg2: cipher in openssl notation
# arg3: keyexchange
# arg4: encryption (maybe included "export")
neat_list(){
local hexcode="$1"
local ossl_cipher="$2"
local kx enc strength
kx=$(sed 's/Kx=//g' <<< "$3")
enc=$(sed 's/Enc=//g' <<< "$4")
strength=$(sed -e 's/.*(//' -e 's/)//' <<< "$enc") # strength = encryption bits
strength=$(sed -e 's/ChaCha20-Poly1305/ly1305/g' <<< "$strength") # workaround for empty bits ChaCha20-Poly1305
enc=$(sed -e 's/(.*)//g' -e 's/ChaCha20-Poly1305/ChaCha20-Po/g' <<< "$enc") # workaround for empty bits ChaCha20-Poly1305
echo "$export" | grep -iq export && strength="$strength,export"
# workaround for color escape codes:
if printf -- "$kx" | "${HEXDUMPVIEW[@]}" | grep -q 33 ; then # here's a color code
kx="$kx " # one for color code if ECDH and three digits
[[ "${#kx}" -eq 18 ]] && kx="$kx " # 18 means DH, colored < 1000. Add another space
[[ "${#kx}" -eq 19 ]] && kx="$kx " # 19 means DH, colored >=1000. Add another space
#echo ${#kx} # should be always 20
fi
#if [[ -r "$MAPPING_FILE_RFC" ]]; then
printf -- " %-7s %-30s %-10s %-11s%-11s${MAPPING_FILE_RFC:+ %-48s}${SHOW_EACH_C:+ }" "$hexcode" "$ossl_cipher" "$kx" "$enc" "$strength" "$(show_rfc_style $HEXC)"
#else
# printf -- " %-7s %-30s %-10s %-11s%-11s${SHOW_EACH_C:+ }" "$1" "$2" "$kx" "$enc" "$strength"
#fi
}
test_just_one(){
local hexcode n ciph sslvers kx auth enc mac export
local dhlen
local ret
local re='^[0-9A-Fa-f]+$'
pr_blue "--> Testing single cipher with "
[[ $1 =~ $re ]] && \
pr_blue "matching number pattern \"$1\" " || \
pr_blue "word pattern "\"$1\"" (ignore case)"
outln
! $HAS_DH_BITS && pr_litemagentaln " (Your $OPENSSL cannot show DH/ECDH bits)"
outln
neat_header
#for arg in $(echo $@ | sed 's/,/ /g'); do
for arg in ${*//, /}; do
# 1st check whether openssl has cipher or not
$OPENSSL ciphers -V 'ALL:COMPLEMENTOFALL:@STRENGTH' 2>$ERRFILE | while read hexcode dash ciph sslvers kx auth enc mac export ; do
# FIXME: e.g. OpenSSL < 1.0 doesn't understand "-V" --> we can't do anything about it!
normalize_ciphercode $hexcode
# is argument a number?
if [[ $arg =~ $re ]]; then
neat_list $HEXC $ciph $kx $enc | grep -qai "$arg"
else
neat_list $HEXC $ciph $kx $enc | grep -qwai "$arg"
fi
if [[ $? -eq 0 ]]; then # string matches, so we can ssl to it:
$OPENSSL s_client -cipher $ciph $STARTTLS -connect $NODEIP:$PORT $PROXY $SNI &>$TMPFILE </dev/null
ret=$?
if [[ $kx == "Kx=ECDH" ]] || [[ $kx == "Kx=DH" ]] || [[ $kx == "Kx=EDH" ]]; then
if [[ $ret -eq 0 ]]; then
dhlen=$(read_dhbits_from_file $TMPFILE quiet)
kx="$kx $dhlen"
else
kx="$kx$grey TBD $off "
fi
fi
neat_list $HEXC $ciph "$kx" $enc
if [[ $ret -eq 0 ]]; then
pr_cyan " available"
else
out " not a/v"
fi
outln
fi
done
done
outln
tmpfile_handle $FUNCNAME.txt
return 0 # this is a single test for a cipher
}
# test for all ciphers locally configured (w/o distinguishing whether they are good or bad
run_allciphers(){
local tmpfile
local nr_ciphers
local -i ret=0
local hexcode n ciph sslvers kx auth enc mac export
local dhlen
nr_ciphers=$(count_ciphers "$($OPENSSL ciphers 'ALL:COMPLEMENTOFALL:@STRENGTH' 2>$ERRFILE)")
outln
pr_blue "--> Testing all locally available $nr_ciphers ciphers against the server"; outln ", ordered by encryption strength"
! $HAS_DH_BITS && pr_litemagentaln " (Your $OPENSSL cannot show DH/ECDH bits)"
outln
neat_header
$OPENSSL ciphers -V 'ALL:COMPLEMENTOFALL:@STRENGTH' 2>>$ERRFILE | while read hexcode n ciph sslvers kx auth enc mac export; do
# FIXME: e.g. OpenSSL < 1.0 doesn't understand "-V" --> we can't do anything about it!
$OPENSSL s_client -cipher $ciph $STARTTLS -connect $NODEIP:$PORT $PROXY $SNI &>$TMPFILE </dev/null
ret=$?
if [[ $ret -ne 0 ]] && [[ "$SHOW_EACH_C" -eq 0 ]]; then
continue # no successful connect AND not verbose displaying each cipher
fi
normalize_ciphercode $hexcode
if [[ $kx == "Kx=ECDH" ]] || [[ $kx == "Kx=DH" ]] || [[ $kx == "Kx=EDH" ]]; then
dhlen=$(read_dhbits_from_file $TMPFILE quiet)
kx="$kx $dhlen"
fi
neat_list $HEXC $ciph "$kx" $enc
if [[ "$SHOW_EACH_C" -ne 0 ]]; then
if [[ $ret -eq 0 ]]; then
pr_cyan " available"
else
out " not a/v"
fi
fi
outln
tmpfile_handle $FUNCNAME.txt
done
outln
return 0
}
# test for all ciphers per protocol locally configured (w/o distinguishing whether they are good or bad
run_cipher_per_proto(){
local proto proto_text
local hexcode n ciph sslvers kx auth enc mac export
local -i ret=0
local dhlen
pr_blue "--> Testing all locally available ciphers per protocol against the server"; outln ", ordered by encryption strength"
! $HAS_DH_BITS && pr_litemagentaln " (Your $OPENSSL cannot show DH/ECDH bits)"
outln
neat_header
outln " -ssl2 SSLv2\n -ssl3 SSLv3\n -tls1 TLS 1\n -tls1_1 TLS 1.1\n -tls1_2 TLS 1.2"| while read proto proto_text; do
locally_supported "$proto" "$proto_text" || continue
outln
$OPENSSL ciphers $proto -V 'ALL:COMPLEMENTOFALL:@STRENGTH' 2>$ERRFILE | while read hexcode n ciph sslvers kx auth enc mac export; do # -V doesn't work with openssl < 1.0
$OPENSSL s_client -cipher $ciph $proto $STARTTLS -connect $NODEIP:$PORT $PROXY $SNI &>$TMPFILE </dev/null
ret=$?
if [[ $ret -ne 0 ]] && [[ "$SHOW_EACH_C" -eq 0 ]]; then
continue # no successful connect AND not verbose displaying each cipher
fi
normalize_ciphercode $hexcode
if [[ $kx == "Kx=ECDH" ]] || [[ $kx == "Kx=DH" ]] || [[ $kx == "Kx=EDH" ]]; then
dhlen=$(read_dhbits_from_file $TMPFILE quiet)
kx="$kx $dhlen"
fi
neat_list $HEXC $ciph "$kx" $enc
if [[ "$SHOW_EACH_C" -ne 0 ]]; then
if [[ $ret -eq 0 ]]; then
pr_cyan " available"
else
out " not a/v"
fi
fi
outln
tmpfile_handle $FUNCNAME.txt
done
done
return 0
}
locally_supported() {
local -i ret=0
[[ -n "$2" ]] && out "$2 "
$OPENSSL s_client "$1" 2>&1 | grep -aq "unknown option"
if [[ $? -eq 0 ]]; then
local_problem "$OPENSSL doesn't support \"s_client $1\""
ret=7
fi
return $ret
}
run_prototest_openssl() {
local sni="$SNI"
local -i ret=0
$OPENSSL s_client -state $1 $STARTTLS -connect $NODEIP:$PORT $PROXY $sni &>$TMPFILE </dev/null
ret=$?
# FIXME: here FreeBSD9/openssl 0.9.8 returns always 0 --> need to read the error but for now we DO NOT SUPPORT this platform.
# that's where the binaries are for!
[[ $DEBUG -eq 2 ]] && egrep "error|failure" $TMPFILE | egrep -av "unable to get local|verify error"
if ! locally_supported "$1" "$2" ; then
ret=7
else # we remove SNI for SSLv2 and v3:
[[ "$1" =~ ssl ]] && sni="" # newer openssl throw an error if SNI is supplied with SSLv2,
# SSLv3 doesn't have SNI (openssl doesn't complain though -- yet)
$OPENSSL s_client -state $1 $STARTTLS -connect $NODEIP:$PORT $sni &>$TMPFILE </dev/null
ret=$? #TODO (maybe): here FreeBSD9 returns always 0 --> need to read the error
[[ $DEBUG -eq 2 ]] && egrep "error|failure" $TMPFILE | egrep -av "unable to get local|verify error"
grep -aq "no cipher list" $TMPFILE && ret=5
fi
tmpfile_handle $FUNCNAME$1.txt
return $ret
# 0: offered
# 1: not offered
# 5: protocol ok, but no cipher
# 7: no local support
}
run_protocols() {
local using_sockets=true
local supported_no_ciph1="supported but couldn't detect a cipher (may need debugging)"
local supported_no_ciph2="supported but couldn't detect a cipher"
outln; pr_blue "--> Testing protocols ";
#FIXME: use PROTOS_OFFERED here
if $SSL_NATIVE; then
using_sockets=false
outln "(via native openssl)\n"
else
if [[ -n "$STARTTLS" ]]; then
outln "(via openssl, SSLv2 via sockets)\n"
using_sockets=false
else
using_sockets=true
outln "(via sockets except TLS 1.2 and SPDY/NPN)\n"
fi
fi
pr_bold " SSLv2 ";
if ! $SSL_NATIVE; then
sslv2_sockets #FIXME: messages need to be moved to this higher level
else
run_prototest_openssl "-ssl2"
case $? in
0) pr_redln "offered (NOT ok)" ;;
1) pr_greenln "not offered (OK)" ;;
5) pr_litered "$supported_no_ciph2";
outln " (may need further attention)" ;; # protocol ok, but no cipher
7) ;; # no local support
esac
fi
pr_bold " SSLv3 ";
if $using_sockets; then
tls_sockets "00" "$TLS_CIPHER"
else
run_prototest_openssl "-ssl3"
fi
case $? in
0) pr_literedln "offered (NOT ok)" ;;
1) pr_greenln "not offered (OK)" ;;
2) pr_litemagentaln "#FIXME: downgraded. still missing a test case here" ;;
5) pr_litered "$supported_no_ciph2";
outln "(may need debugging)" ;; # protocol ok, but no cipher
7) ;; # no local support
esac
pr_bold " TLS 1 ";
if $using_sockets; then
tls_sockets "01" "$TLS_CIPHER"
else
run_prototest_openssl "-tls1"
fi
case $? in
0) outln "offered" ;; # nothing wrong with it -- per se
1) outln "not offered" ;; # neither good or bad
2) pr_brown "not offered (NOT ok)"
[[ $DEBUG -eq 1 ]] && out " -- downgraded"
outln ;;
5) outln "$supported_no_ciph1" ;; # protocol ok, but no cipher
7) ;; # no local support
esac
pr_bold " TLS 1.1 ";
if $using_sockets; then
tls_sockets "02" "$TLS_CIPHER"
else
run_prototest_openssl "-tls1_1"
fi
case $? in
0) outln "offered" ;; # nothing wrong with it
1) outln "not offered" ;; # neither good or bad
2) out "not offered"
[[ $DEBUG -eq 1 ]] && out " -- downgraded"
outln ;;
5) outln "$supported_no_ciph1" ;; # protocol ok, but no cipher
7) ;; # no local support
esac
pr_bold " TLS 1.2 ";
if $using_sockets && [[ $EXPERIMENTAL == "yes" ]]; then #TODO: IIS servers do have a problem here with our handshake
tls_sockets "03" "$TLS12_CIPHER"
else
run_prototest_openssl "-tls1_2"
fi
case $? in
0) pr_greenln "offered (OK)" ;; # GCM cipher in TLS 1.2: very good!
1) pr_brownln "not offered (NOT ok)" ;; # no GCM, penalty
2) pr_brown "not offered (NOT ok)"
[[ $DEBUG -eq 1 ]] && out " -- downgraded"
outln ;;
5) outln "$supported_no_ciph1" ;; # protocol ok, but no cipher
7) ;; # no local support
esac
return 0
}
#TODO: work with a fixed list here
run_std_cipherlists() {
outln
pr_blue "--> Testing ~standard cipher lists"; outln "\n"
# see ciphers(1ssl)
std_cipherlists 'NULL:eNULL' " Null Ciphers " 1
std_cipherlists 'aNULL' " Anonymous NULL Ciphers " 1
std_cipherlists 'ADH' " Anonymous DH Ciphers " 1
std_cipherlists 'EXPORT40' " 40 Bit encryption " 1
std_cipherlists 'EXPORT56' " 56 Bit encryption " 1
std_cipherlists 'EXPORT' " Export Ciphers (general) " 1
std_cipherlists 'LOW:!ADH' " Low (<=64 Bit) " 1
std_cipherlists 'DES:!ADH:!EXPORT:!aNULL' " DES Ciphers " 1
std_cipherlists 'MEDIUM:!NULL:!aNULL:!SSLv2' " Medium grade encryption " 2
std_cipherlists '3DES:!ADH:!aNULL' " Triple DES Ciphers " 3
std_cipherlists 'HIGH:!NULL:!aNULL:!DES:!3DES' " High grade encryption " 0
return 0
}
# arg1: file with input for grepping the bit length for ECDH/DHE
# arg2: whether to print sparse or not (empty: no)
read_dhbits_from_file() {
local bits what_dh
local add=""
local old_fart=" (openssl cannot show DH bits)"
bits=$(awk -F': ' '/^Server Temp Key/ { print $2 }' "$1") # extract line
bits=$(echo "$bits" | sed -e 's/, P-...//' -e 's/,//g' -e 's/bits//' -e 's/ //g') # now: ??DH [number] K??
what_dh=$(echo "$bits" | tr -d '0-9')
bits=$(echo $bits | tr -d 'DHEC')
debugme echo ">$what_dh|$bits<"
if ! $HAS_DH_BITS && [[ -z "what_dh" ]]; then
if [[ -z "$2" ]]; then
pr_litemagenta "$old_fart"
fi
return 0
fi
[[ -n "$bits" ]] && [[ -z "$2" ]] && out ", "
if [[ $what_dh == "DH" ]] || [[ $what_dh == "EDH" ]]; then
[[ -z "$2" ]] && add="bit DH"
if [[ "$bits" -le 600 ]]; then
pr_red "$bits $add"
elif [[ "$bits" -le 800 ]]; then
pr_litered "$bits $add"
elif [[ "$bits" -le 1280 ]]; then
pr_brown "$bits $add"
elif [[ "$bits" -ge 2048 ]]; then
pr_litegreen "$bits $add"
else
out "$bits $add"
fi
# https://wiki.openssl.org/index.php/Elliptic_Curve_Cryptography, http://www.keylength.com/en/compare/
elif [[ $what_dh == "ECDH" ]]; then
[[ -z "$2" ]] && add="bit ECDH"
if [[ "$bits" -le 128 ]]; then # has that ever existed?
pr_red "$bits $add"
elif [[ "$bits" -le 163 ]]; then
pr_litered "$bits $add"
elif [[ "$bits" -ge 224 ]]; then
pr_litegreen "$bits $add"
else
out "$bits $add"
fi
fi
return 0
}
run_server_preference() {
local cipher1 cipher2
local default_cipher default_proto
local remark4default_cipher
local -a cipher proto
local p i
local -i ret=0
local list_fwd="DES-CBC3-SHA:RC4-MD5:DES-CBC-SHA:RC4-SHA:AES128-SHA:AES128-SHA256:AES256-SHA:ECDHE-RSA-AES128-SHA:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA:ECDH-RSA-DES-CBC3-SHA:ECDH-RSA-AES128-SHA:ECDH-RSA-AES256-SHA:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:DHE-DSS-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-GCM-SHA256:AES256-SHA256"
# now reversed offline via tac, see https://github.com/thomassa/testssl.sh/commit/7a4106e839b8c3033259d66697893765fc468393 :
local list_reverse="AES256-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384DHE-DSS-AES256-GCM-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-SHA256:DHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDH-RSA-AES256-SHA:ECDH-RSA-AES128-SHA:ECDH-RSA-DES-CBC3-SHA:DHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA:ECDHE-RSA-AES128-SHA:AES256-SHA:AES128-SHA256:AES128-SHA:RC4-SHA:DES-CBC-SHA:RC4-MD5:DES-CBC3-SHA"
local has_cipher_order=true
outln;
pr_blue "--> Testing server preferences"; outln "\n"
pr_bold " Has server cipher order? "
$OPENSSL s_client $STARTTLS -cipher $list_fwd -connect $NODEIP:$PORT $PROXY $SNI </dev/null 2>$ERRFILE >$TMPFILE
if [[ $? -ne 0 ]] && [[ -z "$STARTTLS_PROTOCOL" ]]; then
pr_litemagenta "no matching cipher in this list found (pls report this): "
outln "$list_fwd . "
has_cipher_order=false
ret=6
elif [[ -n "$STARTTLS_PROTOCOL" ]]; then
# now it still could be that we hit this bug: https://github.com/drwetter/testssl.sh/issues/188
# workaround is to connect with a protocol
debugme out "(workaround #188) "
determine_optimal_proto $STARTTLS_PROTOCOL
$OPENSSL s_client $STARTTLS $STARTTLS_OPTIMAL_PROTO -cipher $list_fwd -connect $NODEIP:$PORT $PROXY $SNI </dev/null 2>$ERRFILE >$TMPFILE
if [[ $? -ne 0 ]]; then
pr_litemagenta "no matching cipher in this list found (pls report this): "
outln "$list_fwd . "
has_cipher_order=false
ret=6
fi
fi
if $has_cipher_order; then
cipher1=$(grep -wa Cipher $TMPFILE | egrep -avw "New|is" | sed -e 's/^ \+Cipher \+://' -e 's/ //g')
$OPENSSL s_client $STARTTLS $STARTTLS_OPTIMAL_PROTO -cipher $list_reverse -connect $NODEIP:$PORT $PROXY $SNI </dev/null 2>>$ERRFILE >$TMPFILE
# that worked above so no error handling here
cipher2=$(grep -wa Cipher $TMPFILE | egrep -avw "New|is" | sed -e 's/^ \+Cipher \+://' -e 's/ //g')
if [[ "$cipher1" != "$cipher2" ]]; then
pr_litered "nope (NOT ok)"
remark4default_cipher=" (limited sense as client will pick)"
else
pr_green "yes (OK)"
remark4default_cipher=""
fi
[[ $DEBUG -ge 2 ]] && out " $cipher1 | $cipher2"
outln
pr_bold " Negotiated protocol "
$OPENSSL s_client $STARTTLS -connect $NODEIP:$PORT $PROXY $SNI </dev/null 2>>$ERRFILE >$TMPFILE
if [[ $? -ne 0 ]]; then
# 2 second try with $OPTIMAL_PROTO especially for intolerant IIS6 servers:
$OPENSSL s_client $STARTTLS $OPTIMAL_PROTO -connect $NODEIP:$PORT $PROXY $SNI </dev/null 2>>$ERRFILE >$TMPFILE
[[ $? -ne 0 ]] && pr_litemagenta "Handshake error!"
fi
default_proto=$(grep -aw "Protocol" $TMPFILE | sed -e 's/^.*Protocol.*://' -e 's/ //g')
case "$default_proto" in
*TLSv1.2) pr_greenln $default_proto ;;
*TLSv1.1) pr_litegreenln $default_proto ;;
*TLSv1) outln $default_proto ;;
*SSLv2) pr_redln $default_proto ;;
*SSLv3) pr_redln $default_proto ;;
"") pr_litemagenta "default proto empty"; [[ $OSSL_VER == 1.0.2* ]] && outln " (Hint: if IIS6 give OpenSSL 1.01 a try)" ;;
*) pr_litemagenta "FIXME line $LINENO: $default_proto" ;;
esac
pr_bold " Negotiated cipher "
default_cipher=$(grep -aw "Cipher" $TMPFILE | egrep -avw "New|is" | sed -e 's/^.*Cipher.*://' -e 's/ //g')
case "$default_cipher" in
*NULL*|*EXP*) pr_red "$default_cipher" ;;
*RC4*) pr_litered "$default_cipher" ;;
*CBC*) pr_brown "$default_cipher" ;; # FIXME BEAST: We miss some CBC ciphers here, need to work w/ a list
*GCM*) pr_green "$default_cipher" ;; # best ones
*CHACHA20*) pr_green "$default_cipher" ;; # best ones
ECDHE*AES*) pr_yellow "$default_cipher" ;; # it's CBC. --> lucky13
"") pr_litemagenta "default cipher empty" ; [[ $OSSL_VER == 1.0.2* ]] && out " (Hint: if IIS6 give OpenSSL 1.01 a try)" ;;
*) out "$default_cipher" ;;
esac
read_dhbits_from_file "$TMPFILE"
outln "$remark4default_cipher"
if [[ ! -z "$remark4default_cipher" ]]; then
pr_bold " Negotiated cipher per proto"; outln " $remark4default_cipher"
i=1
for p in ssl2 ssl3 tls1 tls1_1 tls1_2; do
#locally_supported -"$p" " " || continue
locally_supported -"$p" || continue
$OPENSSL s_client $STARTTLS -"$p" -connect $NODEIP:$PORT $PROXY $SNI </dev/null 2>>$ERRFILE >$TMPFILE
if [[ $? -eq 0 ]]; then
proto[i]=$(grep -aw "Protocol" $TMPFILE | sed -e 's/^.*Protocol.*://' -e 's/ //g')
cipher[i]=$(grep -aw "Cipher" $TMPFILE | egrep -avw "New|is" | sed -e 's/^.*Cipher.*://' -e 's/ //g')
[[ ${cipher[i]} == "0000" ]] && cipher[i]="" # Hack!
[[ $DEBUG -ge 2 ]] && outln "Default cipher for ${proto[i]}: ${cipher[i]}"
else
proto[i]=""
cipher[i]=""
fi
i=$(($i + 1))
done
[[ -n "$PROXY" ]] && arg=" SPDY/NPN is"
[[ -n "$STARTTLS" ]] && arg=" "
if spdy_pre " $arg"; then # is NPN/SPDY supported and is this no STARTTLS? / no PROXY
$OPENSSL s_client -host $NODE -port $PORT -nextprotoneg "$NPN_PROTOs" </dev/null 2>>$ERRFILE >$TMPFILE
if [[ $? -eq 0 ]]; then
proto[i]=$(grep -aw "Next protocol" $TMPFILE | sed -e 's/^Next protocol://' -e 's/(.)//' -e 's/ //g')
if [[ -z "${proto[i]}" ]]; then
cipher[i]=""
else
cipher[i]=$(grep -aw "Cipher" $TMPFILE | egrep -avw "New|is" | sed -e 's/^.*Cipher.*://' -e 's/ //g')
[[ $DEBUG -ge 2 ]] && outln "Default cipher for ${proto[i]}: ${cipher[i]}"
fi
fi
else
outln # we miss for STARTTLS 1x LF otherwise
fi
for i in 1 2 3 4 5 6; do
if [[ -n "${cipher[i]}" ]]; then # cipher not empty
if [[ -z "${cipher[i-1]}" ]]; then # previous one empty
#outln
printf -- " %-30s %s" "${cipher[i]}:" "${proto[i]}" # print out both
else # previous NOT empty
if [[ "${cipher[i-1]}" == "${cipher[i]}" ]]; then # and previous protocol same cipher
out ", ${proto[i]}" # same cipher --> only print out protocol behind it
else
outln
printf -- " %-30s %s" "${cipher[i]}:" "${proto[i]}" # print out both
fi
fi
fi
done
fi
fi
tmpfile_handle $FUNCNAME.txt
if [[ -z "$remark4default_cipher" ]]; then
cipher_pref_check
else
outln "\n No further cipher order check has been done as order is determined by the client"
fi
return 0
}
cipher_pref_check() {
local p proto protos
local tested_cipher cipher
pr_bold " Cipher order"
for p in ssl2 ssl3 tls1 tls1_1 tls1_2; do
$OPENSSL s_client $STARTTLS -"$p" -connect $NODEIP:$PORT $PROXY $SNI </dev/null 2>$ERRFILE >$TMPFILE
if [[ $? -eq 0 ]]; then
tested_cipher=""
proto=$(grep -aw "Protocol" $TMPFILE | sed -e 's/^.*Protocol.*://' -e 's/ //g')
cipher=$(grep -aw "Cipher" $TMPFILE | egrep -avw "New|is" | sed -e 's/^.*Cipher.*://' -e 's/ //g')
[[ -z "$proto" ]] && continue # for early openssl versions sometimes needed
outln
printf " %-10s %s " "$proto:" "$cipher"
tested_cipher="-"$cipher
while true; do
$OPENSSL s_client $STARTTLS -"$p" -cipher "ALL:$tested_cipher" -connect $NODEIP:$PORT $PROXY $SNI </dev/null 2>>$ERRFILE >$TMPFILE
[[ $? -ne 0 ]] && break
cipher=$(grep -aw "Cipher" $TMPFILE | egrep -avw "New|is" | sed -e 's/^.*Cipher.*://' -e 's/ //g')
out "$cipher "
tested_cipher="$tested_cipher:-$cipher"
done
fi
done
outln
if ! spdy_pre " SPDY/NPN: " ; then # is NPN/SPDY supported and is this no STARTTLS?
outln
else
protos=$($OPENSSL s_client -host $NODE -port $PORT -nextprotoneg \"\" </dev/null 2>>$ERRFILE | grep -a "^Protocols " | sed -e 's/^Protocols.*server: //' -e 's/,//g')
for p in $protos; do
$OPENSSL s_client -host $NODE -port $PORT -nextprotoneg "$p" $PROXY </dev/null 2>>$ERRFILE >$TMPFILE
cipher=$(grep -aw "Cipher" $TMPFILE | egrep -avw "New|is" | sed -e 's/^.*Cipher.*://' -e 's/ //g')
printf " %-10s %s " "$p:" "$cipher"
tested_cipher="-"$cipher
while true; do
$OPENSSL s_client -cipher "ALL:$tested_cipher" -host $NODE -port $PORT -nextprotoneg "$p" $PROXY </dev/null 2>>$ERRFILE >$TMPFILE
[[ $? -ne 0 ]] && break
cipher=$(grep -aw "Cipher" $TMPFILE | egrep -avw "New|is" | sed -e 's/^.*Cipher.*://' -e 's/ //g')
out "$cipher "
tested_cipher="$tested_cipher:-$cipher"
done
outln
done
fi
tmpfile_handle $FUNCNAME.txt
return 0
}
get_host_cert() {
# arg1 is proto or empty
$OPENSSL s_client $STARTTLS -connect $NODEIP:$PORT $PROXY $SNI $1 2>/dev/null </dev/null | \
awk '/-----BEGIN/,/-----END/ { print $0 }' >$HOSTCERT
return $((${PIPESTATUS[0]} + ${PIPESTATUS[1]}))
}
get_all_certs() {
local savedir
local nrsaved
local -i ret
$OPENSSL s_client -showcerts $STARTTLS -connect $NODEIP:$PORT $PROXY $SNI 2>$ERRFILE </dev/null >$TEMPDIR/allcerts.txt
ret=$?
savedir=$(pwd); cd $TEMPDIR
# http://backreference.org/2010/05/09/ocsp-verification-with-openssl/
awk -v n=-1 '/-----BEGIN CERTIFICATE-----/{ inc=1; n++ }
inc { print > ("level" n ".crt") }
/---END CERTIFICATE-----/{ inc=0 }' $TEMPDIR/allcerts.txt
nrsaved=$(count_words "$(echo level?.crt 2>/dev/null)")
cd "$savedir"
echo $nrsaved
return $ret
}
tls_time() {
local now difftime
tls_sockets "01" "$TLS_CIPHER" # try first TLS 1.0 (mostfrequently used protocol)
[[ -z "$TLS_TIME" ]] && tls_sockets "03" "$TLS12_CIPHER" # TLS 1.2
[[ -z "$TLS_TIME" ]] && tls_sockets "02" "$TLS_CIPHER" # TLS 1.1
[[ -z "$TLS_TIME" ]] && tls_sockets "00" "$TLS_CIPHER" # SSL 3
if [[ -n "$TLS_TIME" ]]; then # nothing returned a time!
difftime=$(($TLS_TIME - $TLS_NOW)) # TLS_NOW is being set in tls_sockets()
if [[ "${#difftime}" -gt 5 ]]; then
# openssl >= 1.0.1f fills this field with random values! --> good for possible fingerprint
pr_bold " TLS timestamp" ; outln " random values, no fingerprinting possible "
else
[[ $difftime != "-"* ]] && [[ $difftime != "0" ]] && difftime="+$difftime"
pr_bold " TLS clock skew" ; outln " $difftime sec from localtime";
fi
debugme out "$TLS_TIME"
outln
else
pr_bold " TLS timestamp" ; outln " "; pr_litemagentaln "SSLv3 through TLS 1.2 didn't return a timestamp"
fi
}
run_server_defaults() {
local proto
local gost_status_problem=false
local extensions
local sessticket_str lifetime unit keysize sig_algo key_algo
local expire secs2warn ocsp_uri crl startdate enddate issuer_c issuer_o issuer sans san cn cn_nosni
local policy_oid
local spaces=" "
local wildcard=false
outln
pr_blue "--> Testing server defaults (Server Hello)"; outln "\n"
#TLS extensions follow now
# throwing 1st every cipher/protocol at the server to know what works
for proto in tls1_2 tls1_1 tls1 ssl3; do
$OPENSSL s_client $STARTTLS -connect $NODEIP:$PORT $PROXY $SNI -$proto -tlsextdebug -status </dev/null 2>$ERRFILE >$TMPFILE
ret=$?
get_host_cert "-$proto"
[[ $? -eq 0 ]] && [[ $ret -eq 0 ]] && break
ret=7
done # this loop is needed for IIS/6
if [[ $ret -eq 7 ]]; then
# "-status" above doesn't work for GOST only servers, so we do another test without it and see whether that works then:
if ! $OPENSSL s_client $STARTTLS -connect $NODEIP:$PORT $PROXY $SNI -$proto -tlsextdebug </dev/null 2>>$ERRFILE >$TMPFILE; then
pr_litemagentaln "Strange, no SSL/TLS protocol seems to be supported (error around line $((LINENO - 6)))"
tmpfile_handle tlsextdebug+status.txt
return 7 # this is ugly, I know
else
gost_status_problem=true
fi
fi
$OPENSSL s_client $STARTTLS -connect $NODEIP:$PORT $PROXY -$proto 2>>$ERRFILE </dev/null | awk '/-----BEGIN/,/-----END/ { print $0 }' >$HOSTCERT.nosni
pr_bold " TLS server extensions "
extensions=$(grep -aw "^TLS server extension" $TMPFILE | sed -e 's/^TLS server extension \"//' -e 's/\".*$/,/g')
if [[ -z "$extensions" ]]; then
outln "(none)"
else
echo $extensions | sed 's/,$//' # remove last comma
fi
pr_bold " Session Tickets RFC 5077 "
sessticket_str=$(grep -aw "session ticket" $TMPFILE | grep -a lifetime)
if [[ -z "$sessticket_str" ]]; then
outln "(none)"
else
lifetime=$(echo $sessticket_str | grep -a lifetime | sed 's/[A-Za-z:() ]//g')
unit=$(echo $sessticket_str | grep -a lifetime | sed -e 's/^.*'"$lifetime"'//' -e 's/[ ()]//g')
outln "$lifetime $unit"
fi
pr_bold " Server key size "
keysize=$(grep -aw "^Server public key is" $TMPFILE | sed -e 's/^Server public key is //' -e 's/bit//' -e 's/ //')
sig_algo=$($OPENSSL x509 -in $HOSTCERT -noout -text 2>>$ERRFILE | grep "Signature Algorithm" | sed 's/^.*Signature Algorithm: //' | sort -u )
key_algo=$($OPENSSL x509 -in $HOSTCERT -noout -text 2>>$ERRFILE | awk -F':' '/Public Key Algorithm:/ { print $2 }' | sort -u )
if [[ -z "$keysize" ]]; then
outln "(couldn't determine)"
else
if [[ "$keysize" -le 768 ]]; then
if [[ $sig_algo =~ ecdsa ]] || [[ $key_algo =~ ecPublicKey ]]; then
pr_litegreen "EC $keysize"
else
pr_red "$keysize"
fi
elif [[ "$keysize" -le 1024 ]]; then
pr_brown "$keysize"
elif [[ "$keysize" -le 2048 ]]; then
out "$keysize"
elif [[ "$keysize" -le 4096 ]]; then
pr_litegreen "$keysize"
else
out "weird keysize: $keysize"
fi
fi
outln " bit"
pr_bold " Signature Algorithm "
case $sig_algo in
sha1WithRSAEncryption) pr_brownln "SHA1 with RSA" ;;
sha256WithRSAEncryption) pr_litegreenln "SHA256 with RSA" ;;
sha512WithRSAEncryption) pr_litegreenln "SHA512 with RSA" ;;
ecdsa-with-SHA256) pr_litegreenln "ECDSA with SHA256" ;;
md5*) pr_redln "MD5" ;;
*) outln "$algo" ;;
esac
# old, but interesting: https://blog.hboeck.de/archives/754-Playing-with-the-EFF-SSL-Observatory.html
pr_bold " Fingerprint / Serial "
outln "$($OPENSSL x509 -noout -in $HOSTCERT -fingerprint -sha1 2>>$ERRFILE | sed 's/Fingerprint=//' | sed 's/://g' ) / $($OPENSSL x509 -noout -in $HOSTCERT -serial 2>>$ERRFILE | sed 's/serial=//')"
outln "$spaces$($OPENSSL x509 -noout -in $HOSTCERT -fingerprint -sha256 2>>$ERRFILE | sed 's/Fingerprint=//' | sed 's/://g' )"
pr_bold " Common Name (CN) "
if $OPENSSL x509 -in $HOSTCERT -noout -subject 2>>$ERRFILE | grep -wq CN; then
cn=$($OPENSSL x509 -in $HOSTCERT -noout -subject 2>>$ERRFILE | sed 's/subject= //' | sed -e 's/^.*CN=//' -e 's/\/emailAdd.*//')
pr_underline "$cn"
if echo -n "$cn" | grep -q '^*.' ; then
out " (wildcard certificate"
if [[ "$cn" == "*.$(echo -n "$cn" | sed 's/^\*.//')" ]]; then
out " match)"
wildcard=true
else
:
#FIXME: we need to test also the SANs as they can contain a wild card (google.de .e.g) ==> 2.7dev
fi
fi
else
cn="(no CN field in subject)"
out "$cn"
fi
cn_nosni=""
if [[ -s $HOSTCERT.nosni ]]; then
if $OPENSSL x509 -in $HOSTCERT.nosni -noout -subject 2>>$ERRFILE | grep -wq CN; then
cn_nosni=$($OPENSSL x509 -in $HOSTCERT.nosni -noout -subject 2>>$ERRFILE | sed 's/subject= //' | sed -e 's/^.*CN=//' -e 's/\/emailAdd.*//')
else
cn_nosni="no CN field in subject"
fi
fi
debugme out "\"$NODE\" | \"$cn\" | \"$cn_nosni\""
if [[ $NODE == "$cn_nosni" ]]; then
if [[ $SERVICE == "HTTP" ]]; then
outln " (works w/o SNI)"
else
outln " (matches certificate directly)"
# for services != HTTP it depends on the protocol, server and client but it is not named "SNI"
fi
else
if [[ $SERVICE != "HTTP" ]]; then
outln
#pr_brownln " (non-SNI clients don't match CN but for non-HTTP services it might be ok)"
#FIXME: this is irritating and needs to be redone. Then also the wildcard match needs to be tested against "$cn_nosni"
elif [[ -z "$cn_nosni" ]]; then
out " (request w/o SNI didn't succeed";
[[ $algo =~ ecdsa ]] && out ", usual for EC certificates"
outln ")"
elif [[ "$cn_nosni" == "*no CN field*" ]]; then
outln ", (request w/o SNI: $cn_nosni)"
else
out " (CN in response to request w/o SNI: "; pr_underline "$cn_nosni"; outln ")"
fi
fi
sans=$($OPENSSL x509 -in $HOSTCERT -noout -text 2>>$ERRFILE | grep -A3 "Subject Alternative Name" | grep "DNS:" | \
sed -e 's/DNS://g' -e 's/ //g' -e 's/,/ /g' -e 's/othername:<unsupported>//g')
# ^^^ CACert
pr_bold " subjectAltName (SAN) "
if [[ -n "$sans" ]]; then
for san in $sans; do
out "$underline$san$off "
done
else
out "-- "
fi
outln
pr_bold " Issuer "
issuer=$($OPENSSL x509 -in $HOSTCERT -noout -issuer 2>>$ERRFILE| sed -e 's/^.*CN=//g' -e 's/\/.*$//g')
issuer_o=$($OPENSSL x509 -in $HOSTCERT -noout -issuer 2>>$ERRFILE | sed 's/^.*O=//g' | sed 's/\/.*$//g')
if $OPENSSL x509 -in $HOSTCERT -noout -issuer 2>>$ERRFILE | grep -q 'C=' ; then
issuer_c=$($OPENSSL x509 -in $HOSTCERT -noout -issuer 2>>$ERRFILE | sed 's/^.*C=//g' | sed 's/\/.*$//g')
else
issuer_c="" # CACert would have 'issuer= ' here otherwise
fi
if [[ "$issuer_o" == "issuer=" ]] || [[ "$issuer_o" == "issuer= " ]] || [[ "$issuer" == "$CN" ]]; then
pr_redln "selfsigned (not OK)"
else
[[ "$issuer_c" == "" ]] && \
outln "$underline$issuer$off ($underline$issuer_o$off)" || \
outln "$underline$issuer$off ($underline$issuer_o$off from $underline$issuer_c$off)"
fi
# http://events.ccc.de/congress/2010/Fahrplan/attachments/1777_is-the-SSLiverse-a-safe-place.pdf, see page 40pp
pr_bold " EV cert"; out " (experimental) "
policy_oid=$($OPENSSL x509 -in $HOSTCERT -text 2>>$ERRFILE | awk '/ .Policy: / { print $2 }')
if echo "$issuer" | egrep -q 'Extended Validation|Extended Validated|EV SSL|EV CA' || \
[[ "2.16.840.1.114028.10.1.2" == "$policy_oid" ]] || \
[[ 2.16.840.1.114412.1.3.0.2 == "$policy_oid" ]] || \
[[ 2.16.840.1.114412.2.1 == "$policy_oid" ]] || \
[[ 2.16.578.1.26.1.3.3 == "$policy_oid" ]] || \
[[ 1.3.6.1.4.1.17326.10.14.2.1.2 == "$policy_oid" ]] || \
[[ 1.3.6.1.4.1.17326.10.8.12.1.2 == "$policy_oid" ]] || \
[[ 1.3.6.1.4.1.13177.10.1.3.10 == "$policy_oid" ]] ; then
out "yes "
else
out "no "
fi
debugme echo "($(newline_to_spaces "$policy_oid"))"
outln
#TODO: use browser OIDs:
# https://mxr.mozilla.org/mozilla-central/source/security/certverifier/ExtendedValidation.cpp
# http://src.chromium.org/chrome/trunk/src/net/cert/ev_root_ca_metadata.cc
# https://certs.opera.com/03/ev-oids.xml
pr_bold " Certificate Expiration "
expire=$($OPENSSL x509 -in $HOSTCERT -checkend 0 2>>$ERRFILE)
if ! echo $expire | grep -qw not; then
pr_red "expired!"
else
secs2warn=$((24 * 60 * 60 * DAYS2WARN2)) # low threshold first
expire=$($OPENSSL x509 -in $HOSTCERT -checkend $secs2warn 2>>$ERRFILE)
if echo "$expire" | grep -qw not; then
secs2warn=$((24 * 60 * 60 * DAYS2WARN1))
expire=$($OPENSSL x509 -in $HOSTCERT -checkend $secs2warn 2>>$ERRFILE)
if echo "$expire" | grep -qw not; then
pr_litegreen ">= $DAYS2WARN1 days"
else
pr_brown "expires < $DAYS2WARN1 days"
fi
else
pr_litered "expires < $DAYS2WARN2 days!"
fi
fi
if $HAS_GNUDATE ; then
enddate=$(date --date="$($OPENSSL x509 -in $HOSTCERT -noout -enddate 2>>$ERRFILE | cut -d= -f 2)" +"%F %H:%M %z")
startdate=$(date --date="$($OPENSSL x509 -in $HOSTCERT -noout -startdate 2>>$ERRFILE | cut -d= -f 2)" +"%F %H:%M")
else
enddate=$(date -j -f "%b %d %T %Y %Z" "$($OPENSSL x509 -in $HOSTCERT -noout -enddate 2>>$ERRFILE | cut -d= -f 2)" +"%F %H:%M %z")
startdate=$(date -j -f "%b %d %T %Y %Z" "$($OPENSSL x509 -in $HOSTCERT -noout -startdate 2>>$ERRFILE | cut -d= -f 2)" +"%F %H:%M")
fi
outln " ($startdate --> $enddate)"
pr_bold " # of certificates provided"; outln " $(get_all_certs)"
pr_bold " Certificate Revocation List "
crl="$($OPENSSL x509 -in $HOSTCERT -noout -text 2>>$ERRFILE | grep -A 4 "CRL Distribution" | grep URI | sed 's/^.*URI://')"
case $(count_lines "$crl") in
0) pr_literedln "--" ;;
1) outln "$crl" ;;
*) out_row_aligned "$crl" "$spaces" ;;
esac
pr_bold " OCSP URI "
ocsp_uri=$($OPENSSL x509 -in $HOSTCERT -noout -ocsp_uri 2>>$ERRFILE)
[[ x"$ocsp_uri" == "x" ]] && pr_literedln "--" || echo "$ocsp_uri"
pr_bold " OCSP stapling "
if grep "OCSP response" $TMPFILE | grep -q "no response sent" ; then
out " not offered"
else
if grep "OCSP Response Status" $TMPFILE | grep -q successful; then
pr_litegreen " offered"
else
if $gost_status_problem; then
outln " (GOST servers make problems here, sorry)"
ret=0
else
outln " not sure what's going on here, debug:"
grep -A 20 "OCSP response" $TMPFILE
ret=2
fi
fi
fi
outln
# if we call tls_time before tmpfile_handle it throws an error because the function tls_sockets removed $TMPFILE
# already -- and that was a different one -- means that would get overwritten anyway
tmpfile_handle tlsextdebug+status.txt
tls_time
return $ret
}
# FIXME: revoked, see checkcert.sh
# FIXME: Trust (only CN)
# http://www.heise.de/security/artikel/Forward-Secrecy-testen-und-einrichten-1932806.html
run_pfs() {
local ret ret2
local -i pfs_offered=1
local tmpfile
local dhlen
local hexcode dash pfs_cipher sslvers kx auth enc mac
# https://community.qualys.com/blogs/securitylabs/2013/08/05/configuring-apache-nginx-and-openssl-for-forward-secrecy -- but with RC4:
#local pfs_ciphers='EECDH+ECDSA+AESGCM EECDH+aRSA+AESGCM EECDH+ECDSA+SHA256 EECDH+aRSA+SHA256 EECDH+aRSA+RC4 EDH+aRSA EECDH RC4 !RC4-SHA !aNULL !eNULL !LOW !3DES !MD5 !EXP !PSK !SRP !DSS:@STRENGTH'
#w/o RC4:
#local pfs_ciphers='EECDH+ECDSA+AESGCM EECDH+aRSA+AESGCM EECDH+ECDSA+SHA256 EECDH+aRSA+SHA256 EDH+aRSA EECDH !RC4-SHA !aNULL !eNULL !LOW !3DES !MD5 !EXP !PSK !SRP !DSS:@STRENGTH'
#
# hardcoded: (the exclusion via ! doesn't work with libressl and openssl 0.9.8) and it's reproducible
local pfs_cipher_list="ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES256-SHA256:DHE-RSA-AES256-SHA:DHE-RSA-CAMELLIA256-SHA256:DHE-RSA-CAMELLIA256-SHA:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-CAMELLIA256-SHA384:ECDHE-ECDSA-CAMELLIA256-SHA384:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-ECDSA-CAMELLIA128-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-CAMELLIA128-SHA256:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-RSA-CAMELLIA128-SHA256:DHE-RSA-SEED-SHA:DHE-RSA-CAMELLIA128-SHA:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-RC4-SHA:ECDHE-ECDSA-RC4-SHA"
local -i no_supported_ciphers=0
outln
pr_blue "--> Testing (perfect) forward secrecy, (P)FS"; outln " -- omitting 3DES, RC4 and Null Encryption here"
! $HAS_DH_BITS && $WIDE && pr_litemagentaln " (Your $OPENSSL cannot show DH/ECDH bits)"
no_supported_ciphers=$(count_ciphers $(actually_supported_ciphers $pfs_cipher_list))
if [[ "$no_supported_ciphers" -le "$CLIENT_MIN_PFS" ]]; then
outln
local_problem "You only have $number_pfs PFS ciphers on the client side "
return 1
fi
$OPENSSL s_client -cipher 'ECDH:DH' $STARTTLS -connect $NODEIP:$PORT $PROXY $SNI &>$TMPFILE </dev/null
ret=$?
outln
if [[ $ret -ne 0 ]] || [[ $(grep -ac "BEGIN CERTIFICATE" $TMPFILE) -eq 0 ]]; then
pr_brownln "Not OK: No ciphers supporting Forward Secrecy offered"
else
pfs_offered=0
pr_litegreen " PFS is offered (OK)"
if $WIDE; then
outln ", ciphers follow (client/browser support is here specially important) \n"
neat_header
else
out " "
fi
while read hexcode dash pfs_cipher sslvers kx auth enc mac; do
tmpfile=$TMPFILE.$hexcode
$OPENSSL s_client -cipher $pfs_cipher $STARTTLS -connect $NODEIP:$PORT $PROXY $SNI &>$tmpfile </dev/null
ret2=$?
if [[ $ret2 -ne 0 ]] && [[ "$SHOW_EACH_C" -eq 0 ]]; then
continue # no successful connect AND not verbose displaying each cipher
fi
if $WIDE; then
normalize_ciphercode $hexcode
if [[ $kx == "Kx=ECDH" ]] || [[ $kx == "Kx=DH" ]] || [[ $kx == "Kx=EDH" ]]; then
dhlen=$(read_dhbits_from_file "$tmpfile" quiet)
kx="$kx $dhlen"
fi
neat_list $HEXC $pfs_cipher "$kx" $enc $strength
let "pfs_offered++"
if [[ "$SHOW_EACH_C" -ne 0 ]]; then
if [[ $ret2 -eq 0 ]]; then
pr_green "works"
else
out "not a/v"
fi
fi
outln
else
out "$pfs_cipher "
fi
done < <($OPENSSL ciphers -V "$pfs_cipher_list" 2>$ERRFILE) # -V doesn't work with openssl < 1.0
# ^^^^^ posix redirect as shopt will either segfault or doesn't work with old bash versions
debugme echo $pfs_offered
if [[ "$pfs_offered" -eq 1 ]]; then
pr_brown "no PFS ciphers found"
fi
fi
outln
$WIDE && outln
debugme echo $(actually_supported_ciphers $pfs_cipher_list)
debugme echo $no_supported_ciphers
tmpfile_handle $FUNCNAME.txt
return $pfs_offered
}
# good source for configuration and bugs: https://wiki.mozilla.org/Security/Server_Side_TLS
# good start to read: http://en.wikipedia.org/wiki/Transport_Layer_Security#Attacks_against_TLS.2FSSL
spdy_pre(){
if [[ ! -z "$STARTTLS" ]]; then
[[ -n "$1" ]] && out "$1"
out "(SPDY is a HTTP protocol and thus not tested here)"
return 1
fi
if [[ ! -z "$PROXY" ]]; then
[[ -n "$1" ]] && pr_litemagenta "$1 "
pr_litemagenta "not tested as proxies do not support proxying it"
return 1
fi
# first, does the current openssl support it?
$OPENSSL s_client help 2>&1 | grep -qw nextprotoneg
if [[ $? -ne 0 ]]; then
local_problem "$OPENSSL doesn't support SPDY/NPN";
return 7
fi
return 0
}
run_spdy() {
local tmpstr
local -i ret=0
pr_bold " SPDY/NPN "
if ! spdy_pre ; then
echo
return 0
fi
$OPENSSL s_client -host $NODE -port $PORT -nextprotoneg $NPN_PROTOs </dev/null 2>$ERRFILE >$TMPFILE
tmpstr=$(grep -a '^Protocols' $TMPFILE | sed 's/Protocols.*: //')
if [[ -z "$tmpstr" ]] || [[ "$tmpstr" == " " ]]; then
out "not offered"
ret=1
else
# now comes a strange thing: "Protocols advertised by server:" is empty but connection succeeded
if echo $tmpstr | egrep -aq "spdy|http" ; then
out "$tmpstr" ; out " (advertised)"
ret=0
else
pr_litemagenta "please check manually, server response was ambigious ..."
ret=10
fi
fi
outln
# btw: nmap can do that too http://nmap.org/nsedoc/scripts/tls-nextprotoneg.html
# nmap --script=tls-nextprotoneg #NODE -p $PORT is your friend if your openssl doesn't want to test this
tmpfile_handle $FUNCNAME.txt
return $ret
}
# arg1: string to send
# arg2: possible success strings a egrep pattern, needed!
starttls_line() {
debugme echo -e "\n=== sending \"$1\" ..."
echo -e "$1" >&5
# we don't know how much to read and it's blocking! So we just put a cat into the
# background and read until $STARTTLS_SLEEP and: cross our fingers
cat <&5 >$TMPFILE &
wait_kill $! $STARTTLS_SLEEP
debugme echo "... received result: "
debugme cat $TMPFILE
if [[ -n "$2" ]]; then
if egrep -q "$2" $TMPFILE; then
debugme echo "---> reply matched \"$2\""
else
debugme echo "---> reply didn't match \"$2\", see $TMPFILE"
pr_magenta "STARTTLS handshake problem. "
outln "Either switch to native openssl (--ssl-native), "
outln " give the server more time to reply (STARTTLS_SLEEP=<seconds> ./testssh.sh ..) -- "
outln " or debug what happened (add --debug=2)"
exit -3
fi
fi
return 0
}
starttls_just_send(){
debugme echo -e "\n=== sending \"$1\" ..."
echo -e "$1" >&5
}
starttls_just_read(){
debugme echo "=== just read banner ==="
if [[ "$DEBUG" -ge 2 ]]; then
cat <&5 &
wait_kill $! $STARTTLS_SLEEP
else
dd of=/dev/null count=8 <&5 2>/dev/null &
wait_kill $! $STARTTLS_SLEEP
fi
return 0
}
# arg for a fd doesn't work here
fd_socket() {
local jabber=""
local proyxline=""
if [[ -n "$PROXY" ]]; then
if ! exec 5<> /dev/tcp/${PROXYIP}/${PROXYPORT}; then
outln
pr_magenta "$PROG_NAME: unable to open a socket to proxy $PROXYIP:$PROXYPORT"
return 6
fi
echo "CONNECT $NODEIP:$PORT" >&5
while true ; do
read proyxline <&5
if [[ "${proyxline%/*}" == "HTTP" ]]; then
proyxline=${proyxline#* }
if [[ "${proyxline%% *}" != "200" ]]; then
[[ "$PORT" != 443 ]] && outln "Check whether your proxy supports port $PORT and the underlying protocol."
pr_magenta "Unable to CONNECT via proxy. "
return 6
fi
fi
if [[ "$proyxline" == $'\r' ]]; then
break
fi
done
elif ! exec 5<>/dev/tcp/$NODEIP/$PORT; then # 2>/dev/null would remove an error message, but disables debugging
outln
pr_magenta "Unable to open a socket to $NODEIP:$PORT. "
# It can last ~2 minutes but for for those rare occasions we don't do a timeout handler here, KISS
return 6
fi
if [[ -n "$STARTTLS" ]]; then
case "$STARTTLS_PROTOCOL" in # port
ftp|ftps) # https://tools.ietf.org/html/rfc4217
$FAST_STARTTLS || starttls_just_read
$FAST_STARTTLS || starttls_line "FEAT" "211" && starttls_just_send "FEAT"
starttls_line "AUTH TLS" "successful|234"
;;
smtp|smtps) # SMTP, see https://tools.ietf.org/html/rfc4217
$FAST_STARTTLS || starttls_just_read
$FAST_STARTTLS || starttls_line "EHLO testssl.sh" "220|250" && starttls_just_send "EHLO testssl.sh"
starttls_line "STARTTLS" "220"
;;
pop3|pop3s) # POP, see https://tools.ietf.org/html/rfc2595
$FAST_STARTTLS || starttls_just_read
starttls_line "STLS" "OK"
;;
nntp|nntps) # NNTP, see https://tools.ietf.org/html/rfc4642
$FAST_STARTTLS || starttls_just_read
$FAST_STARTTLS || starttls_line "CAPABILITIES" "101|200" && starttls_just_send "CAPABILITIES"
starttls_line "STARTTLS" "382"
;;
imap|imaps) # IMAP, https://tools.ietf.org/html/rfc2595
$FAST_STARTTLS || starttls_just_read
$FAST_STARTTLS || starttls_line "a001 CAPABILITY" "OK" && starttls_just_send "a001 CAPABILITY"
starttls_line "a002 STARTTLS" "OK"
;;
ldap|ldaps) # LDAP, https://tools.ietf.org/html/rfc2830, https://tools.ietf.org/html/rfc4511
fatal "FIXME: LDAP+STARTTLS over sockets not yet supported (try \"--ssl-native\")" -4
;;
acap|acaps) # ACAP = Application Configuration Access Protocol, see https://tools.ietf.org/html/rfc2595
fatal "ACAP Easteregg: not implemented -- probably never will" -4
;;
xmpp|xmpps) # XMPP, see https://tools.ietf.org/html/rfc6120
starttls_just_read
[[ -z $XMPP_HOST ]] && XMPP_HOST="$NODE"
jabber=$(cat <<EOF
<?xml version='1.0' ?>
<stream:stream
xmlns:stream='http://etherx.jabber.org/streams'
xmlns='jabber:client'
to='$XMPP_HOST'
xml:lang='en'
version='1.0'>
EOF
)
starttls_line "$jabber"
starttls_line "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>" "proceed"
# BTW: https://xmpp.net !
;;
*) # we need to throw an error here -- otherwise testssl.sh treats the STARTTLS protocol as plain SSL/TLS which leads to FP
fatal "FIXME: STARTTLS protocol $STARTTLS_PROTOCOL is not yet supported" -4
esac
fi
return 0
}
close_socket(){
exec 5<&-
exec 5>&-
return 0
}
# first: helper function for protocol checks
code2network() {
# arg1: formatted string here in the code
NW_STR=$(echo "$1" | sed -e 's/,/\\\x/g' | sed -e 's/# .*$//g' -e 's/ //g' -e '/^$/d' | tr -d '\n' | tr -d '\t')
#TODO: just echo, no additional global var
}
len2twobytes() {
local len_arg1=${#1}
[[ $len_arg1 -le 2 ]] && LEN_STR=$(printf "00, %02s \n" "$1")
[[ $len_arg1 -eq 3 ]] && LEN_STR=$(printf "%02s, %02s \n" "${1:0:1}" "${1:1:2}")
[[ $len_arg1 -eq 4 ]] && LEN_STR=$(printf "%02s, %02s \n" "${1:0:2}" "${1:2:2}")
}
socksend_sslv2_clienthello() {
local data=""
code2network "$1"
data="$NW_STR"
[[ "$DEBUG" -ge 4 ]] && echo "\"$data\""
printf -- "$data" >&5 2>/dev/null &
sleep $USLEEP_SND
}
# for SSLv2 to TLS 1.2:
sockread_serverhello() {
[[ -z "$2" ]] && maxsleep=$MAX_WAITSOCK || maxsleep=$2
SOCK_REPLY_FILE=$(mktemp $TEMPDIR/ddreply.XXXXXX) || return 7
dd bs=$1 of=$SOCK_REPLY_FILE count=1 <&5 2>/dev/null &
wait_kill $! $maxsleep
return $?
}
# arg1: name of file with socket reply
parse_sslv2_serverhello() {
# server hello: in hex representation, see below
# byte 1+2: length of server hello 0123
# 3: 04=Handshake message, server hello 45
# 4: session id hit or not (boolean: 00=false, this 67
# is the normal case)
# 5: certificate type, 01 = x509 89
# 6+7 version (00 02 = SSLv2) 10-13
# 8+9 certificate length 14-17
# 10+11 cipher spec length 17-20
# 12+13 connection id length
# [certificate length] ==> certificate
# [cipher spec length] ==> ciphers GOOD: HERE ARE ALL CIPHERS ALREADY!
local ret=3
v2_hello_ascii=$(hexdump -v -e '16/1 "%02X"' $1)
[[ "$DEBUG" -ge 5 ]] && echo "$v2_hello_ascii"
if [[ -z "$v2_hello_ascii" ]]; then
ret=0 # 1 line without any blanks: no server hello received
debugme echo "server hello empty"
else
# now scrape two bytes out of the reply per byte
v2_hello_initbyte="${v2_hello_ascii:0:1}" # normally this belongs to the next, should be 8!
v2_hello_length="${v2_hello_ascii:1:3}" # + 0x8000 see above
v2_hello_handshake="${v2_hello_ascii:4:2}"
v2_hello_cert_length="${v2_hello_ascii:14:4}"
v2_hello_cipherspec_length="${v2_hello_ascii:18:4}"
V2_HELLO_CIPHERSPEC_LENGTH=$(printf "%d\n" "0x$v2_hello_cipherspec_length" 2>/dev/null)
[[ $? -ne 0 ]] && ret=7
if [[ $v2_hello_initbyte != "8" ]] || [[ $v2_hello_handshake != "04" ]]; then
ret=1
if [[ $DEBUG -ge 2 ]]; then
echo "no correct server hello"
echo "SSLv2 server init byte: 0x0$v2_hello_initbyte"
echo "SSLv2 hello handshake : 0x$v2_hello_handshake"
fi
fi
if [[ $DEBUG -ge 3 ]]; then
echo "SSLv2 server hello length: 0x0$v2_hello_length"
echo "SSLv2 certificate length: 0x$v2_hello_cert_length"
echo "SSLv2 cipher spec length: 0x$v2_hello_cipherspec_length"
fi
fi
return $ret
}
# arg1: name of file with socket reply
parse_tls_serverhello() {
local tls_hello_ascii=$(hexdump -v -e '16/1 "%02X"' "$1")
local tls_content_type tls_protocol tls_len_all
#TODO: all vars here
TLS_TIME=""
DETECTED_TLS_VERSION=""
# server hello, handshake details see http://en.wikipedia.org/wiki/Transport_Layer_Security-SSL#TLS_record
# byte 0: content type: 0x14=CCS, 0x15=TLS alert x16=Handshake, 0x17 Aplication, 0x18=HB
# byte 1+2: TLS version word, major is 03, minor 00=SSL3, 01=TLS1 02=TLS1.1 03=TLS 1.2
# byte 3+4: length all
# byte 5: handshake type (2=hello) TLS alert: level (2=fatal), descr (0x28=handshake failure)
# byte 6+7+8: length server hello
# byte 9+10: 03, TLS version word see byte 1+2
# byte 11-14: TLS timestamp for OpenSSL <1.01f
# byte 15-42: random, 28 bytes
# byte 43: session id length
# byte 44+45+sid-len: cipher suite!
# byte 46+sid-len: compression method: 00: none, 01: deflate
# byte 47+48+sid-len: extension length
[[ "$DEBUG" -eq 5 ]] && echo $tls_hello_ascii # one line without any blanks
if [[ -z "$tls_hello_ascii" ]]; then
debugme echo "server hello empty, TCP connection closed"
return 1 # no server hello received
fi
# now scrape two bytes out of the reply per byte
tls_content_type="${tls_hello_ascii:0:2}" # normally this is x16 (Handshake) here
tls_protocol="${tls_hello_ascii:2:4}"
DETECTED_TLS_VERSION=$tls_protocol
tls_len_all=${tls_hello_ascii:6:4}
sid_len_offset=86
tls_hello="${tls_hello_ascii:10:2}" # normally this is x02
tls_protocol2="${tls_hello_ascii:18:4}"
tls_hello_time="${tls_hello_ascii:22:8}"
if [[ $tls_content_type == "15" ]]; then # TLS ALERT
tls_err_level=${tls_hello_ascii:10:2} # 1: warning, 2: fatal
tls_err_descr=${tls_hello_ascii:12:2} # 112/0x70: Unrecognized name, 111/0x6F: certificate_unobtainable,
# 113/0x71: bad_certificate_status_response, #114/0x72: bad_certificate_hash_value
if [[ $DEBUG -ge 2 ]]; then
echo "tls_content_type: 0x$tls_content_type"
echo "tls_protocol: 0x$tls_protocol"
echo "tls_len_all: $tls_len_all"
echo "tls_err_descr: 0x${tls_err_descr} / = $(hex2dec ${tls_err_descr})"
echo "tls_err_level: ${tls_err_level} (warning:1, fatal:2)"
fi
# now, here comes a strange thing... -- on the first glance
# IF an apache 2.2/2.4 server e.g. has a default servername configured but we send SNI <myhostname>
# we get a TLS ALERT saying "unrecognized_name" (0x70) and a warning (0x1), see RFC https://tools.ietf.org/html/rfc6066#page-17
# note that RFC recommended to fail instead: https://tools.ietf.org/html/rfc6066#section-3
# we need to handle this properly -- otherwise we always return that the protocol or cipher is not available!
if [[ "$tls_err_descr" == 70 ]] && [[ "${tls_err_level}" == "01" ]]; then
sid_len_offset=100 # we are 2x7 bytes off (formerly: 86 instead of 100)
tls_hello="${tls_hello_ascii:24:2}" # here, too (normally this is (02)
tls_protocol2="${tls_hello_ascii:32:4}" # here, too
tls_hello_time="${tls_hello_ascii:36:8}" # and here, too
else
return 1
fi
fi
TLS_TIME=$(hex2dec "$tls_hello_time")
tls_sid_len=$(hex2dec "${tls_hello_ascii:$sid_len_offset:2}")
let sid_offset=$sid_len_offset+2+$tls_sid_len*2
tls_cipher_suite="${tls_hello_ascii:$sid_offset:4}"
let sid_offset=$sid_len_offset+6++$tls_sid_len*2
tls_compression_method="${tls_hello_ascii:$sid_offset:2}"
if [[ $DEBUG -ge 2 ]]; then
echo "tls_hello: 0x$tls_hello"
if [[ $DEBUG -ge 4 ]]; then
echo "tls_protocol2: 0x$tls_protocol2"
echo "tls_sid_len: 0x$(dec2hex $tls_sid_len) / = $tls_sid_len"
fi
echo -n "tls_hello_time: 0x$tls_hello_time "
if $HAS_GNUDATE ; then
date --date="@$TLS_TIME" "+%Y-%m-%d %r"
else
date -j -f %s "$TLS_TIME" "+%Y-%m-%d %r"
fi
echo "tls_cipher_suite: 0x$tls_cipher_suite"
echo "tls_compression_method: 0x$tls_compression_method"
outln
fi
return 0
}
sslv2_sockets() {
local ciphers_detected
fd_socket 5 || return 6
[[ "$DEBUG" -ge 2 ]] && outln "sending client hello... "
socksend_sslv2_clienthello "$SSLv2_CLIENT_HELLO"
sockread_serverhello 32768
[[ "$DEBUG" -ge 2 ]] && outln "reading server hello... "
if [[ "$DEBUG" -ge 4 ]]; then
hexdump -C "$SOCK_REPLY_FILE" | head -6
outln
fi
parse_sslv2_serverhello "$SOCK_REPLY_FILE"
case $? in
7) # strange reply, couldn't convert the cipher spec length to a hex number
pr_litemagenta "strange v2 reply "
outln " (rerun with DEBUG >=2)"
[[ $DEBUG -ge 3 ]] && hexdump -C "$SOCK_REPLY_FILE" | head -1
ret=7 ;;
1) # no sslv2 server hello returned, like in openlitespeed which returns HTTP!
pr_greenln "not offered (OK)"
ret=0 ;;
0) # reset
pr_greenln "not offered (OK)"
ret=0 ;;
3) # everything else
lines=$(hexdump -C "$SOCK_REPLY_FILE" 2>/dev/null | wc -l | sed 's/ //g')
[[ "$DEBUG" -ge 2 ]] && out " ($lines lines) "
if [[ "$lines" -gt 1 ]]; then
ciphers_detected=$((V2_HELLO_CIPHERSPEC_LENGTH / 3))
if [[ 0 -eq "$ciphers_detected" ]]; then
pr_litered "supported but couldn't detect a cipher"; outln " (may need further attention)"
else
pr_red "offered (NOT ok)"; outln " -- $ciphers_detected ciphers"
fi
ret=1
fi ;;
esac
pr_off
debugme outln
close_socket
TMPFILE=$SOCK_REPLY_FILE
tmpfile_handle $FUNCNAME.dd
return $ret
}
# ARG1: TLS version low byte (00: SSLv3, 01: TLS 1.0, 02: TLS 1.1, 03: TLS 1.2)
# ARG2: CIPHER_SUITES string
socksend_tls_clienthello() {
#FIXME: redo this with all extensions!
local tls_low_byte="$1"
local tls_low_byte1="01" # the first TLS version number is always 0301 -- except: SSLv3
local servername_hexstr len_servername len_servername_hex
local hexdump_format_str
local all_extensions
local len_sni_listlen len_sni_ext len_extension_hex
local cipher_suites len_ciph_suites len_ciph_suites_word
local len_client_hello_word len_all_word
#len_servername=$(echo ${#NODE})
len_servername=${#NODE}
hexdump_format_str="$len_servername/1 \"%02x,\""
servername_hexstr=$(printf $NODE | hexdump -v -e "${hexdump_format_str}" | sed 's/,$//')
code2network "$2" # convert CIPHER_SUITES
cipher_suites="$NW_STR" # we don't have the leading \x here so string length is two byte less, see next
#formatted example for SNI
#00 00 # extension server_name
#00 1a # length = the following +2 = server_name length + 5
#00 18 # server_name list_length = server_name length +3
#00 # server_name type (hostname)
#00 15 # server_name length
#66 66 66 66 66 66 2e 66 66 66 66 66 66 66 66 66 66 2e 66 66 66 target.mydomain1.tld # server_name target
# convert lengths we need to fill in from dec to hex:
len_servername_hex=$(printf "%02x\n" $len_servername)
len_sni_listlen=$(printf "%02x\n" $((len_servername+3)))
len_sni_ext=$(printf "%02x\n" $((len_servername+5)))
len_extension_hex=$(printf "%02x\n" $((len_servername+9))) #FIXME: for TLS 1.2 and IIS servers we need extension_signature_algorithms!!
len_ciph_suites_byte=$(echo ${#cipher_suites})
let "len_ciph_suites_byte += 2"
# we have additional 2 chars \x in each 2 byte string and 2 byte ciphers, so we need to divide by 4:
len_ciph_suites=$(printf "%02x\n" $(($len_ciph_suites_byte / 4 )))
len2twobytes "$len_ciph_suites"
len_ciph_suites_word="$LEN_STR"
#[[ $DEBUG -ge 3 ]] && echo $len_ciph_suites_word
# RFC 3546 doesn't specify SSLv3 to have SNI, openssl just ignores the switch if supplied
if [[ "$tls_low_byte" == "00" ]]; then
len2twobytes $(printf "%02x\n" $((0x$len_ciph_suites + 0x27)))
else
len2twobytes $(printf "%02x\n" $((0x$len_ciph_suites + 0x27 + 0x$len_extension_hex + 0x2)))
fi
len_client_hello_word="$LEN_STR"
#[[ $DEBUG -ge 3 ]] && echo $len_client_hello_word
if [[ "$tls_low_byte" == "00" ]]; then
len2twobytes $(printf "%02x\n" $((0x$len_ciph_suites + 0x2b)))
else
len2twobytes $(printf "%02x\n" $((0x$len_ciph_suites + 0x2b + 0x$len_extension_hex + 0x2)))
fi
len_all_word="$LEN_STR"
#[[ $DEBUG -ge 3 ]] && echo $len_all_word
# if we have SSLv3, the first occurence of TLS protocol is SSLv3, otherwise TLS 1.0
[[ $tls_low_byte == "00" ]] && tls_low_byte1="00"
TLS_CLIENT_HELLO="
# TLS header ( 5 bytes)
,16, 03, $tls_low_byte1 # TLS Version: in wireshark this is always 00 for TLS 1.0-1.2
,$len_all_word # Length <---
# Handshake header:
,01 # Type (x01 for ClientHello)
,00, $len_client_hello_word # Length ClientHello
,03, $tls_low_byte # TLS Version (again)
,54, 51, 1e, 7a # Unix time since see www.moserware.com/2009/06/first-few-milliseconds-of-https.html
,de, ad, be, ef # Random 28 bytes
,31, 33, 07, 00, 00, 00, 00, 00
,cf, bd, 39, 04, cc, 16, 0a, 85
,03, 90, 9f, 77, 04, 33, d4, de
,00 # Session ID length
,$len_ciph_suites_word # Cipher suites length
,$cipher_suites
,01 # Compression methods length
,00" # Compression method (x00 for NULL)
#TODO,add (see heartbleed)
# extension lenghth (word)
# extension ec_point_formats (4 words) 1st: 00 0b
#len 00 04
# ec prot formats len: 03
# uncompressed 00
# EC point format: ansiX962_compressed_prime 01
# EC point format: ansiX962_compressed_char2 02
# ec, 1st: 00 0a
# 2nd length: (word) e.g. 0x34
# 3rd: ec curve len ln-2 e.g. 0x32
# 4.-n. curves e.g. 25 words
# Extension: Session Ticket 00 23
extension_signature_algorithms="
00, 0d, # Type: signature_algorithms , see RFC 5246
00, 20, # len
00,1e, 06,01, 06,02, 06,03, 05,01, 05,02, 05,03,
04,01, 04,02, 04,03, 03,01, 03,02, 03,03, 02,01, 02,02, 02,03"
# Extension: Haertbeat 00 0f
# len 00 01
# peer allowed to send requests 01
if [[ "$tls_low_byte" == "00" ]]; then
all_extensions=""
else #FIXME: we (probably) need extension_signature_algorithms here. TLS 1.2 fails on IIS otherwise
all_extensions="
,00, $len_extension_hex # first the len of all (here: 1) extentions. We assume len(hostname) < FF - 9
,00, 00 # extension server_name
,00, $len_sni_ext # length SNI EXT
,00, $len_sni_listlen # server_name list_length
,00 # server_name type (hostname)
,00, $len_servername_hex # server_name length
,$servername_hexstr" # server_name target
fi
fd_socket 5 || return 6
code2network "$TLS_CLIENT_HELLO$all_extensions"
data=$(echo $NW_STR)
[[ "$DEBUG" -ge 4 ]] && echo "\"$data\""
printf -- "$data" >&5 2>/dev/null &
sleep $USLEEP_SND
return 0
}
# arg1: TLS version low byte
# (00: SSLv3, 01: TLS 1.0, 02: TLS 1.1, 03: TLS 1.2)
tls_sockets() {
local -i ret=0
local -i save=0
local lines
local tls_low_byte
local cipher_list_2send
tls_low_byte="$1"
if [[ -n "$2" ]]; then # use supplied string in arg2 if there is one
cipher_list_2send="$2"
else # otherwise use std ciphers then
if [[ "$tls_low_byte" == "03" ]]; then
cipher_list_2send="$TLS12_CIPHER"
else
cipher_list_2send="$TLS_CIPHER"
fi
fi
[[ "$DEBUG" -ge 2 ]] && echo "sending client hello..."
socksend_tls_clienthello "$tls_low_byte" "$cipher_list_2send"
ret=$? # 6 means opening socket didn't succeed, e.g. timeout
# if sending didn't succeed we don't bother
if [[ $ret -eq 0 ]]; then
sockread_serverhello 32768
TLS_NOW=$(date "+%s")
[[ "$DEBUG" -ge 2 ]] && outln "reading server hello..."
if [[ "$DEBUG" -ge 3 ]]; then
hexdump -C $SOCK_REPLY_FILE | head -6
echo
fi
parse_tls_serverhello "$SOCK_REPLY_FILE"
save=$?
# see https://secure.wand.net.nz/trac/libprotoident/wiki/SSL
lines=$(count_lines "$(hexdump -C "$SOCK_REPLY_FILE" 2>$ERRFILE)")
[[ "$DEBUG" -ge 2 ]] && out " (returned $lines lines) "
# determine the return value for higher level, so that they can tell what the result is
if [[ $save -eq 1 ]] || [[ $lines -eq 1 ]]; then
ret=1 # NOT available
else
if [[ 03$tls_low_byte -eq $DETECTED_TLS_VERSION ]]; then
ret=0 # protocol available, TLS version returned equal to the one send
else
[[ $DEBUG -ge 2 ]] && echo -n "protocol send: 0x03$tls_low_byte, returned: 0x$DETECTED_TLS_VERSION"
ret=2 # protocol NOT available, server downgraded to $DETECTED_TLS_VERSION
fi
fi
debugme outln
else
debugme "stuck on sending: $ret"
fi
close_socket
TMPFILE=$SOCK_REPLY_FILE
tmpfile_handle $FUNCNAME.dd
return $ret
}
####### vulnerabilities follow #######
# general overview which browser "supports" which vulnerability:
# http://en.wikipedia.org/wiki/Transport_Layer_Security-SSL#Web_browsers
# mainly adapted from https://gist.github.com/takeshixx/10107280
run_heartbleed(){
[ $VULN_COUNT -le $VULN_THRESHLD ] && outln && pr_blue "--> Testing for heartbleed vulnerability" && outln "\n"
pr_bold " Heartbleed\c"; out " (CVE-2014-0160) "
#if [[ -n "$STARTTLS" ]] && [[ $EXPERIMENTAL != "yes" ]]; then
# outln "(not yet implemented for STARTTLS)"
# return 0
#fi
# determine TLS versions available:
$OPENSSL s_client $STARTTLS -connect $NODEIP:$PORT $PROXY -tlsextdebug &>$TMPFILE </dev/null
if $HAS_SED_E; then
tls_proto_offered=$(grep -aw Protocol $TMPFILE | sed -E 's/[^[:digit:]]//g')
else
tls_proto_offered=$(grep -aw Protocol $TMPFILE | sed -r 's/[^[:digit:]]//g')
fi
case $tls_proto_offered in
12) tls_hexcode="x03, x03" ;;
11) tls_hexcode="x03, x02" ;;
*) tls_hexcode="x03, x01" ;;
esac
heartbleed_payload=", x18, $tls_hexcode, x00, x03, x01, x40, x00"
client_hello="
# TLS header ( 5 bytes)
,x16, # content type (x16 for handshake)
$tls_hexcode, # TLS version
x00, xdc, # length
# Handshake header
x01, # type (x01 for ClientHello)
x00, x00, xd8, # length
$tls_hexcode, # TLS version
# Random (32 byte)
x53, x43, x5b, x90, x9d, x9b, x72, x0b,
xbc, x0c, xbc, x2b, x92, xa8, x48, x97,
xcf, xbd, x39, x04, xcc, x16, x0a, x85,
x03, x90, x9f, x77, x04, x33, xd4, xde,
x00, # session ID length
x00, x66, # cipher suites length
# cipher suites (51 suites)
xc0, x14, xc0, x0a, xc0, x22, xc0, x21,
x00, x39, x00, x38, x00, x88, x00, x87,
xc0, x0f, xc0, x05, x00, x35, x00, x84,
xc0, x12, xc0, x08, xc0, x1c, xc0, x1b,
x00, x16, x00, x13, xc0, x0d, xc0, x03,
x00, x0a, xc0, x13, xc0, x09, xc0, x1f,
xc0, x1e, x00, x33, x00, x32, x00, x9a,
x00, x99, x00, x45, x00, x44, xc0, x0e,
xc0, x04, x00, x2f, x00, x96, x00, x41,
xc0, x11, xc0, x07, xc0, x0c, xc0, x02,
x00, x05, x00, x04, x00, x15, x00, x12,
x00, x09, x00, x14, x00, x11, x00, x08,
x00, x06, x00, x03, x00, xff,
x01, # compression methods length
x00, # compression method (x00 for NULL)
x00, x49, # extensions length
# extension: ec_point_formats
x00, x0b, x00, x04, x03, x00, x01, x02,
# extension: elliptic_curves
x00, x0a, x00, x34, x00, x32, x00, x0e,
x00, x0d, x00, x19, x00, x0b, x00, x0c,
x00, x18, x00, x09, x00, x0a, x00, x16,
x00, x17, x00, x08, x00, x06, x00, x07,
x00, x14, x00, x15, x00, x04, x00, x05,
x00, x12, x00, x13, x00, x01, x00, x02,
x00, x03, x00, x0f, x00, x10, x00, x11,
# extension: session ticket TLS
x00, x23, x00, x00,
# extension: heartbeat
x00, x0f, x00, x01, x01"
fd_socket 5 || return 6
[[ $DEBUG -ge 2 ]] && outln "\nsending client hello (TLS version $tls_hexcode)"
socksend "$client_hello" 1
sockread 16384
[[ $DEBUG -ge 2 ]] && outln "\nreading server hello"
if [[ $DEBUG -ge 3 ]]; then
echo "$SOCKREPLY" | "${HEXDUMPVIEW[@]}" | head -20
outln "[...]"
outln "\nsending payload with TLS version $tls_hexcode:"
fi
socksend "$heartbleed_payload" 1
sockread 16384 $HEARTBLEED_MAX_WAITSOCK
retval=$?
if [[ $DEBUG -ge 3 ]]; then
outln "\nheartbleed reply: "
echo "$SOCKREPLY" | "${HEXDUMPVIEW[@]}"
outln
fi
lines_returned=$(echo "$SOCKREPLY" | "${HEXDUMP[@]}" | wc -l | sed 's/ //g')
if [[ $lines_returned -gt 1 ]]; then
pr_red "VULNERABLE (NOT ok)"
ret=1
else
pr_green "not vulnerable (OK)"
ret=0
fi
[[ $retval -eq 3 ]] && out " (timed out)"
outln
close_socket
tmpfile_handle $FUNCNAME.txt
return $ret
}
# helper function
ok_ids(){
pr_greenln "\n ok -- something resetted our ccs packets"
return 0
}
#FIXME: At a certain point heartbleed and ccs needs to be changed and make use of code2network using a file, then tls_sockets
run_ccs_injection(){
# see https://www.openssl.org/news/secadv_20140605.txt
# mainly adapted from Ramon de C Valle's C code from https://gist.github.com/rcvalle/71f4b027d61a78c42607
[[ $VULN_COUNT -le $VULN_THRESHLD ]] && outln && pr_blue "--> Testing for CCS injection vulnerability" && outln "\n"
pr_bold " CCS"; out " (CVE-2014-0224) "
#if [[ -n "$STARTTLS" ]] && [[ $EXPERIMENTAL != "yes" ]]; then
# outln "(not yet implemented for STARTTLS)"
# return 0
#fi
$OPENSSL s_client $STARTTLS -connect $NODEIP:$PORT $PROXY &>$TMPFILE </dev/null
if $HAS_SED_E; then
tls_proto_offered=$(grep -aw Protocol $TMPFILE | sed -E 's/[^[:digit:]]//g')
else
tls_proto_offered=$(grep -aw Protocol $TMPFILE | sed -r 's/[^[:digit:]]//g')
fi
case $tls_proto_offered in
12) tls_hexcode="x03, x03" ;;
11) tls_hexcode="x03, x02" ;;
*) tls_hexcode="x03, x01" ;;
esac
ccs_message=", x14, $tls_hexcode ,x00, x01, x01"
client_hello="
# TLS header (5 bytes)
,x16, # content type (x16 for handshake)
$tls_hexcode, # TLS version
x00, x93, # length
# Handshake header
x01, # type (x01 for ClientHello)
x00, x00, x8f, # length
$tls_hexcode, # TLS version
# Random (32 byte)
x53, x43, x5b, x90, x9d, x9b, x72, x0b,
xbc, x0c, xbc, x2b, x92, xa8, x48, x97,
xcf, xbd, x39, x04, xcc, x16, x0a, x85,
x03, x90, x9f, x77, x04, x33, xd4, xde,
x00, # session ID length
x00, x68, # cipher suites length
# Cipher suites (51 suites)
xc0, x13, xc0, x12, xc0, x11, xc0, x10,
xc0, x0f, xc0, x0e, xc0, x0d, xc0, x0c,
xc0, x0b, xc0, x0a, xc0, x09, xc0, x08,
xc0, x07, xc0, x06, xc0, x05, xc0, x04,
xc0, x03, xc0, x02, xc0, x01, x00, x39,
x00, x38, x00, x37, x00, x36, x00, x35, x00, x34,
x00, x33, x00, x32, x00, x31, x00, x30,
x00, x2f, x00, x16, x00, x15, x00, x14,
x00, x13, x00, x12, x00, x11, x00, x10,
x00, x0f, x00, x0e, x00, x0d, x00, x0c,
x00, x0b, x00, x0a, x00, x09, x00, x08,
x00, x07, x00, x06, x00, x05, x00, x04,
x00, x03, x00, x02, x00, x01, x01, x00"
fd_socket 5 || return 6
# we now make a standard handshake ...
debugme out "\nsending client hello, "
socksend "$client_hello" 1
sockread 16384
debugme outln "\nreading server hello"
if [[ $DEBUG -ge 3 ]]; then
echo "$SOCKREPLY" | "${HEXDUMPVIEW[@]}" | head -20
outln "[...]"
outln "\npayload #1 with TLS version $tls_hexcode:"
fi
# ... and then send the a change cipher spec message
socksend "$ccs_message" 1 || ok_ids
sockread 2048 $CCS_MAX_WAITSOCK
if [[ $DEBUG -ge 3 ]]; then
outln "\n1st reply: "
out "$SOCKREPLY" | "${HEXDUMPVIEW[@]}" | head -20
# ok: 15 | 0301 | 02 | 02 | 0a
# ALERT | TLS 1.0 | Length=2 | Unexpected Message (0a)
# or just timed out
outln
outln "payload #2 with TLS version $tls_hexcode:"
fi
socksend "$ccs_message" 2 || ok_ids
sockread 2048 $CCS_MAX_WAITSOCK
retval=$?
if [[ $DEBUG -ge 3 ]]; then
outln "\n2nd reply: "
printf -- "$SOCKREPLY" | "${HEXDUMPVIEW[@]}"
# not ok: 15 | 0301 | 02 | 02 | 15
# ALERT | TLS 1.0 | Length=2 | Decryption failed (21)
# ok: 0a or nothing: ==> RST
outln
fi
byte6=$(echo "$SOCKREPLY" | "${HEXDUMPPLAIN[@]}" | sed 's/^..........//')
lines=$(echo "$SOCKREPLY" | "${HEXDUMP[@]}" | count_lines )
debugme echo "lines: $lines, byte6: $byte6"
if [[ "$byte6" == "0a" ]] || [[ "$lines" -gt 1 ]]; then
pr_green "not vulnerable (OK)"
ret=0
else
pr_red "VULNERABLE (NOT ok)"
ret=1
fi
[[ $retval -eq 3 ]] && out " (timed out)"
outln
close_socket
tmpfile_handle $FUNCNAME.txt
return $ret
}
local_problem() {
pr_litemagentaln "Local problem: $1"
}
run_renego() {
# no SNI here. Not needed as there won't be two different SSL stacks for one IP
local legacycmd=""
local insecure_renogo_str="Secure Renegotiation IS NOT"
local sec_renego sec_client_renego
[ $VULN_COUNT -le $VULN_THRESHLD ] && outln && pr_blue "--> Testing for Renegotiation vulnerability" && outln "\n"
pr_bold " Secure Renegotiation "; out "(CVE-2009-3555) " # and RFC5746, OSVDB 59968-59974
# community.qualys.com/blogs/securitylabs/2009/11/05/ssl-and-tls-authentication-gap-vulnerability-discovered
if $OPENSSL s_client $OPTIMAL_PROTO $STARTTLS -connect $NODEIP:$PORT $SNI $PROXY 2>&1 </dev/null &>$TMPFILE; then
grep -iaq "$insecure_renogo_str" $TMPFILE
sec_renego=$? # 0= Secure Renegotiation IS NOT supported
#FIXME: didn't occur to me yet but why not also to check on "Secure Renegotiation IS supported"
case $sec_renego in
0) pr_redln "VULNERABLE (NOT ok)" ;;
1) pr_greenln "not vulnerable (OK)" ;;
*) pr_litemagentaln "FIXME (bug): $sec_renego" ;;
esac
else
pr_litemagentaln "handshake didn't succeed"
fi
pr_bold " Secure Client-Initiated Renegotiation " # RFC 5746
# see: https://community.qualys.com/blogs/securitylabs/2011/10/31/tls-renegotiation-and-denial-of-service-attacks
# http://blog.ivanristic.com/2009/12/testing-for-ssl-renegotiation.html -- head/get doesn't seem to be needed though
case "$OSSL_VER" in
0.9.8*) # we need this for Mac OSX unfortunately
case "$OSSL_VER_APPENDIX" in
[a-l]) local_problem "$OPENSSL cannot test this secure renegotiation vulnerability"
return 3 ;;
[m-z]) ;; # all ok
esac ;;
1.0.1*|1.0.2*) legacycmd="-legacy_renegotiation" ;;
0.9.9*|1.0*) ;; # all ok
esac
# We need up to two tries here, as some LiteSpeed servers don't answer on "R" and block. Thus first try in the background
echo R | $OPENSSL s_client $OPTIMAL_PROTO $legacycmd $STARTTLS -msg -connect $NODEIP:$PORT $SNI $PROXY &>$TMPFILE & # msg enables us to look deeper into it while debugging
wait_kill $! $HEADER_MAXSLEEP
if [[ $? -eq 3 ]]; then
pr_litegreen "likely not vulnerable (OK)"; outln " (timed out)" # it hung
sec_client_renego=1
else
# second try in the foreground as we are sure now it won't hang
echo R | $OPENSSL s_client $legacycmd $STARTTLS -msg -connect $NODEIP:$PORT $SNI $PROXY &>$TMPFILE
sec_client_renego=$? # 0=client is renegotiating & doesn't return an error --> vuln!
case $sec_client_renego in
0) pr_litered "VULNERABLE (NOT ok)"; outln ", DoS threat" ;;
1) pr_litegreenln "not vulnerable (OK)" ;;
*) "FIXME (bug): $sec_client_renego" ;;
esac
fi
#FIXME Insecure Client-Initiated Renegotiation is missing
tmpfile_handle $FUNCNAME.txt
return $(($sec_renego + $sec_client_renego))
#FIXME: the return value is wrong, should be 0 if all ok. But as the caller doesn't care we don't care either ... yet ;-)
}
run_crime() {
local -i ret=0
local addcmd=""
# in a nutshell: don't offer TLS/SPDY compression on the server side
# This tests for CRIME Vulnerability (www.ekoparty.org/2012/juliano-rizzo.php) on HTTPS, not SPDY (yet)
# Please note that it is an attack where you need client side control, so in regular situations this
# means anyway "game over", w/wo CRIME
# www.h-online.com/security/news/item/Vulnerability-in-SSL-encryption-is-barely-exploitable-1708604.html
[ $VULN_COUNT -le $VULN_THRESHLD ] && outln && pr_blue "--> Testing for CRIME vulnerability" && outln "\n"
pr_bold " CRIME, TLS " ; out "(CVE-2012-4929) "
# first we need to test whether OpenSSL binary has zlib support
$OPENSSL zlib -e -a -in /dev/stdin &>/dev/stdout </dev/null | grep -q zlib
if [[ $? -eq 0 ]]; then
local_problem "$OPENSSL lacks zlib support"
return 7
fi
[[ "$OSSL_VER" == "*0.9.8*" ]] && addcmd="-no_ssl2"
$OPENSSL s_client $OPTIMAL_PROTO $addcmd $STARTTLS -connect $NODEIP:$PORT $PROXY $SNI </dev/null &>$TMPFILE
if grep -a Compression $TMPFILE | grep -aq NONE >/dev/null; then
pr_litegreen "not vulnerable (OK)"
[[ $SERVICE == "HTTP" ]] || out " (not using HTTP anyway)"
ret=0
else
if [[ $SERVICE == "HTTP" ]]; then
pr_litered "VULNERABLE (NOT ok)"
else
pr_brown "VULNERABLE (NOT ok), but not using HTTP: probably no exploit known"
fi
ret=1
fi
# not clear whether this is a protocol != HTTP as one needs to have the ability to modify the
# compression input which is done via javascript in the context of HTTP
outln
# this needs to be re-done i order to remove the redundant check for spdy
# weed out starttls, spdy-crime is a web thingy
# if [[ "x$STARTTLS" != "x" ]]; then
# echo
# return $ret
# fi
# weed out non-webports, spdy-crime is a web thingy. there's a catch thoug, you see it?
# case $PORT in
# 25|465|587|80|110|143|993|995|21)
# echo
# return $ret
# esac
# $OPENSSL s_client help 2>&1 | grep -qw nextprotoneg
# if [[ $? -eq 0 ]]; then
# $OPENSSL s_client -host $NODE -port $PORT -nextprotoneg $NPN_PROTOs $SNI </dev/null 2>/dev/null >$TMPFILE
# if [[ $? -eq 0 ]]; then
# echo
# pr_bold "CRIME Vulnerability, SPDY \c" ; outln "(CVE-2012-4929): \c"
# STR=$(grep Compression $TMPFILE )
# if echo $STR | grep -q NONE >/dev/null; then
# pr_green "not vulnerable (OK)"
# ret=$((ret + 0))
# else
# pr_red "VULNERABLE (NOT ok)"
# ret=$((ret + 1))
# fi
# fi
# fi
# [[ $DEBUG -eq 2 ]] outln "$STR"
tmpfile_handle $FUNCNAME.txt
return $ret
}
# BREACH is a HTTP-level compression & an attack which works against any cipher suite and is agnostic
# to the version of TLS/SSL, more: http://www.breachattack.com/ . Foreign referrers are the important thing here!
run_breach() {
local header
local -i ret=0
local referer useragent
local url
[[ $SERVICE != "HTTP" ]] && return 7
[[ $VULN_COUNT -le $VULN_THRESHLD ]] && outln && pr_blue "--> Testing for BREACH (HTTP compression) vulnerability" && outln "\n"
pr_bold " BREACH"; out " (CVE-2013-3587) "
url="$1"
[[ -z "$url" ]] && url="/"
if $SNEAKY; then
# see https://community.qualys.com/message/20360
if [[ "$NODE" =~ google ]]; then
referer="http://yandex.ru/" # otherwise we have a false positive for google.com
else
referer="http://google.com/"
fi
useragent="$UA_SNEAKY"
else
referer="TLS/SSL-Tester from $SWURL"
useragent="$UA_STD"
fi
(
$OPENSSL s_client $OPTIMAL_PROTO -quiet -connect $NODEIP:$PORT $PROXY $SNI << EOF
GET $url HTTP/1.1
Host: $NODE
User-Agent: $useragent
Accept: text/*
Accept-Language: en-US,en
Accept-encoding: gzip,deflate,compress
Referer: $referer
Connection: close
EOF
) >$HEADERFILE_BREACH 2>$ERRFILE &
if wait_kill $! $HEADER_MAXSLEEP; then
result=$(grep -a '^Content-Encoding' $HEADERFILE_BREACH | sed -e 's/^Content-Encoding//' -e 's/://' -e 's/ //g')
result=$(echo $result | tr -cd '\40-\176')
if [[ -z $result ]]; then
pr_green "no HTTP compression (OK) "
ret=0
else
pr_litered "NOT ok: uses $result HTTP compression "
ret=1
fi
# Catch: any URL can be vulnerable. I am testing now only the root. URL!
outln "(only \"$url\" tested)"
else
pr_litemagentaln "failed (HTTP header request stalled)"
ret=3
fi
return $ret
}
# Padding Oracle On Downgraded Legacy Encryption, in a nutshell: don't use CBC Ciphers in SSLv3
run_ssl_poodle() {
local -i ret=0
local cbc_ciphers
local cbc_ciphers="SRP-DSS-AES-256-CBC-SHA:SRP-RSA-AES-256-CBC-SHA:SRP-AES-256-CBC-SHA:RSA-PSK-AES256-CBC-SHA:PSK-AES256-CBC-SHA:SRP-DSS-AES-128-CBC-SHA:SRP-RSA-AES-128-CBC-SHA:SRP-AES-128-CBC-SHA:IDEA-CBC-SHA:IDEA-CBC-MD5:RC2-CBC-MD5:RSA-PSK-AES128-CBC-SHA:PSK-AES128-CBC-SHA:ECDHE-RSA-DES-CBC3-SHA:ECDHE-ECDSA-DES-CBC3-SHA:SRP-DSS-3DES-EDE-CBC-SHA:SRP-RSA-3DES-EDE-CBC-SHA:SRP-3DES-EDE-CBC-SHA:EDH-RSA-DES-CBC3-SHA:EDH-DSS-DES-CBC3-SHA:DH-RSA-DES-CBC3-SHA:DH-DSS-DES-CBC3-SHA:AECDH-DES-CBC3-SHA:ADH-DES-CBC3-SHA:ECDH-RSA-DES-CBC3-SHA:ECDH-ECDSA-DES-CBC3-SHA:DES-CBC3-SHA:DES-CBC3-MD5:RSA-PSK-3DES-EDE-CBC-SHA:PSK-3DES-EDE-CBC-SHA:EXP1024-DHE-DSS-DES-CBC-SHA:EDH-RSA-DES-CBC-SHA:EDH-DSS-DES-CBC-SHA:DH-RSA-DES-CBC-SHA:DH-DSS-DES-CBC-SHA:ADH-DES-CBC-SHA:EXP1024-DES-CBC-SHA:DES-CBC-SHA:EXP1024-RC2-CBC-MD5:DES-CBC-MD5:EXP-EDH-RSA-DES-CBC-SHA:EXP-EDH-DSS-DES-CBC-SHA:EXP-ADH-DES-CBC-SHA:EXP-DES-CBC-SHA:EXP-RC2-CBC-MD5:EXP-RC2-CBC-MD5"
local cbc_ciphers_krb="KRB5-IDEA-CBC-SHA:KRB5-IDEA-CBC-MD5:KRB5-DES-CBC3-SHA:KRB5-DES-CBC3-MD5:KRB5-DES-CBC-SHA:KRB5-DES-CBC-MD5:EXP-KRB5-RC2-CBC-SHA:EXP-KRB5-DES-CBC-SHA:EXP-KRB5-RC2-CBC-MD5:EXP-KRB5-DES-CBC-MD5"
[ $VULN_COUNT -le $VULN_THRESHLD ] && outln && pr_blue "--> Testing for SSLv3 POODLE (Padding Oracle On Downgraded Legacy Encryption)" && outln "\n"
pr_bold " POODLE, SSL"; out " (CVE-2014-3566) "
cbc_ciphers=$($OPENSSL ciphers -v 'ALL:eNULL' 2>$ERRFILE | awk '/CBC/ { print $1 }' | tr '\n' ':')
#FIXME: even with worst openssl client (FreeBSD9) we have 17 reasonable ciphers but is that enough to check??
debugme echo $cbc_ciphers
$OPENSSL s_client -ssl3 $STARTTLS -cipher $cbc_ciphers -connect $NODEIP:$PORT $PROXY $SNI &>$TMPFILE </dev/null
ret=$?
[[ $DEBUG -eq 2 ]] && egrep -q "error|failure" $TMPFILE | egrep -av "unable to get local|verify error"
if [[ $ret -eq 0 ]]; then
pr_litered "VULNERABLE (NOT ok)"; out ", uses SSLv3+CBC (check TLS_FALLBACK_SCSV mitigation below)"
else
pr_green "not vulnerable (OK)"
fi
outln
tmpfile_handle $FUNCNAME.txt
return $ret
}
# for appliance which use padding, no fallback needed
run_tls_poodle() {
pr_bold " POODLE, SSL"; out " CVE-2014-8730), experimental "
#FIXME
echo "#FIXME"
return 7
}
run_tls_fallback_scsv() {
local -i ret=0
[ $VULN_COUNT -le $VULN_THRESHLD ] && outln && pr_blue "--> Testing for TLS_FALLBACK_SCSV Protection" && outln "\n"
pr_bold " TLS_FALLBACK_SCSV"; out " (RFC 7507), experim. "
# This isn't a vulnerability check per se, but checks for the existence of
# the countermeasure to protect against protocol downgrade attacks.
# First check we have support for TLS_FALLBACK_SCSV in our local OpenSSL
$OPENSSL s_client -h 2>&1 | grep -q "\-fallback_scsv"
if [[ $? -gt 0 ]]; then
local_problem "$OPENSSL lacks TLS_FALLBACK_SCSV support"
return 4
fi
#TODO: this need some tuning: a) if one protocol is supported only it has practcally no value (theoretical it's interesting though)
# b) for IIS6 + openssl 1.0.2 this won't work
# c) best to make sure that we hit a specific protocol, see https://alpacapowered.wordpress.com/2014/10/20/ssl-poodle-attack-what-is-this-scsv-thingy/
# d) minor: we should do "-state" here
# first: make sure we have tls1_2:
if ! $OPENSSL s_client $STARTTLS -connect $NODEIP:$PORT $PROXY $SNI -no_tls1_2 &>/dev/null </dev/null; then
pr_litemagenta "Check failed: seems like TLS 1.2 is the only protocol "
ret=7
else
# ...and do the test
$OPENSSL s_client $STARTTLS -connect $NODEIP:$PORT $PROXY $SNI -no_tls1_2 -fallback_scsv &>$TMPFILE </dev/null
if grep -q "CONNECTED(00" "$TMPFILE"; then
if grep -qa "BEGIN CERTIFICATE" "$TMPFILE"; then
pr_brown "Downgrade attack prevention NOT supported"
ret=1
elif grep -qa "alert inappropriate fallback" "$TMPFILE"; then
pr_litegreen "Downgrade attack prevention supported (OK)"
ret=0
elif grep -qa "alert handshake failure" "$TMPFILE"; then
# see RFC 7507, https://github.com/drwetter/testssl.sh/issues/121
pr_brown "\"handshake failure\" instead of \"inappropriate fallback\" (likely NOT ok)"
ret=2
elif grep -qa "ssl handshake failure" "$TMPFILE"; then
pr_brown "some unexpected \"handshake failure\" instead of \"inappropriate fallback\" (likely NOT ok)"
ret=3
else
pr_litemagenta "Check failed, unexpected result "
out ", run $PROG_NAME -Z --debug=1 and look at $TEMPDIR/*tls_fallback_scsv.txt"
fi
else
pr_litemagenta "test failed (couldn't connect)"
ret=7
fi
fi
outln
tmpfile_handle $FUNCNAME.txt
return $ret
}
# Factoring RSA Export Keys: don't use EXPORT RSA ciphers, see https://freakattack.com/
run_freak() {
local -i ret=0
local -i no_supported_ciphers=0
# with correct build it should list these 7 ciphers (plus the two latter as SSLv2 ciphers):
local exportrsa_cipher_list="EXP1024-DES-CBC-SHA:EXP1024-RC4-SHA:EXP-EDH-RSA-DES-CBC-SHA:EXP-DH-RSA-DES-CBC-SHA:EXP-DES-CBC-SHA:EXP-RC2-CBC-MD5:EXP-RC2-CBC-MD5:EXP-RC4-MD5:EXP-RC4-MD5"
local addtl_warning=""
[ $VULN_COUNT -le $VULN_THRESHLD ] && outln && pr_blue "--> Testing for FREAK attack" && outln "\n"
pr_bold " FREAK"; out " (CVE-2015-0204) "
no_supported_ciphers=$(count_ciphers $(actually_supported_ciphers $exportrsa_cipher_list))
#echo "========= ${PIPESTATUS[*]}
case $no_supported_ciphers in
0) local_problem "$OPENSSL doesn't have any EXPORT RSA ciphers configured"
return 7 ;;
1|2|3)
addtl_warning=" ($magenta""tested only with $no_supported_ciphers out of 9 ciphers only!$off)" ;;
8|9|10|11)
addtl_warning="" ;;
4|5|6|7)
addtl_warning=" (tested with $no_supported_ciphers/9 ciphers)" ;;
esac
$OPENSSL s_client $STARTTLS -cipher $exportrsa_cipher_list -connect $NODEIP:$PORT $PROXY $SNI &>$TMPFILE </dev/null
ret=$?
[[ $DEBUG -eq 2 ]] && egrep -a "error|failure" $TMPFILE | egrep -av "unable to get local|verify error"
if [[ $ret -eq 0 ]]; then
pr_red "VULNERABLE (NOT ok)"; out ", uses EXPORT RSA ciphers"
else
pr_green "not vulnerable (OK)"; out "$addtl_warning"
fi
outln
debugme echo $(actually_supported_ciphers $exportrsa_cipher_list)
debugme echo $no_supported_ciphers
tmpfile_handle $FUNCNAME.txt
return $ret
}
# see https://weakdh.org/logjam.html
run_logjam() {
local -i ret=0
local exportdhe_cipher_list="EXP1024-DHE-DSS-DES-CBC-SHA:EXP1024-DHE-DSS-RC4-SHA:EXP-EDH-RSA-DES-CBC-SHA:EXP-EDH-DSS-DES-CBC-SHA"
local -i no_supported_ciphers=0
local addtl_warning=""
[ $VULN_COUNT -le $VULN_THRESHLD ] && outln && pr_blue "--> Testing for LOGJAM vulnerability" && outln "\n"
pr_bold " LOGJAM"; out " (CVE-2015-4000), experimental "
no_supported_ciphers=$(count_ciphers $(actually_supported_ciphers $exportdhe_cipher_list))
case $no_supported_ciphers in
0) local_problem "$OPENSSL doesn't have any DHE EXPORT ciphers configured"
return 3 ;;
1|2) addtl_warning=" ($magenta""tested w/ $no_supported_ciphers/4 ciphers only!$off)" ;;
3) addtl_warning=" (tested w/ $no_supported_ciphers/4 ciphers)" ;;
4) ;;
esac
$OPENSSL s_client $STARTTLS -cipher $exportdhe_cipher_list -connect $NODEIP:$PORT $PROXY $SNI &>$TMPFILE </dev/null
ret=$?
[[ $DEBUG -eq 2 ]] && egrep -a "error|failure" $TMPFILE | egrep -av "unable to get local|verify error"
addtl_warning="$addtl_warning, common primes not checked."
if $HAS_DH_BITS; then
if ! $do_allciphers && ! $do_cipher_per_proto && $HAS_DH_BITS; then
addtl_warning="$addtl_warning \"$PROG_NAME -E/-e\" spots candidates"
else
addtl_warning="$addtl_warning See below for any DH ciphers + bit size"
fi
fi
if [[ $ret -eq 0 ]]; then
pr_red "VULNERABLE (NOT ok)"; out ", uses DHE EXPORT ciphers, common primes not checked."
else
pr_green "not vulnerable (OK)"; out "$addtl_warning"
fi
outln
debugme echo $(actually_supported_ciphers $exportdhe_cipher_list)
debugme echo $no_supported_ciphers
tmpfile_handle $FUNCNAME.txt
return $ret
}
# TODO: perfect candidate for replacement by sockets, so is freak
# Browser Exploit Against SSL/TLS: don't use CBC Ciphers in SSLv3 TLSv1.0
run_beast(){
local hexcode dash cbc_cipher sslvers kx auth enc mac export
local detected_proto
local -i ret=0
local detected_cbc_ciphers=""
local higher_proto_supported=""
local openssl_ret=0
local vuln_beast=false
local spaces=" "
local cr=$'\n'
local first=true
local continued=false
local cbc_cipher_list="SRP-DSS-AES-256-CBC-SHA:SRP-RSA-AES-256-CBC-SHA:SRP-AES-256-CBC-SHA:RSA-PSK-AES256-CBC-SHA:PSK-AES256-CBC-SHA:SRP-DSS-AES-128-CBC-SHA:SRP-RSA-AES-128-CBC-SHA:SRP-AES-128-CBC-SHA:IDEA-CBC-SHA:IDEA-CBC-MD5:RC2-CBC-MD5:RSA-PSK-AES128-CBC-SHA:PSK-AES128-CBC-SHA:KRB5-IDEA-CBC-SHA:KRB5-IDEA-CBC-MD5:ECDHE-RSA-DES-CBC3-SHA:ECDHE-ECDSA-DES-CBC3-SHA:SRP-DSS-3DES-EDE-CBC-SHA:SRP-RSA-3DES-EDE-CBC-SHA:SRP-3DES-EDE-CBC-SHA:EDH-RSA-DES-CBC3-SHA:EDH-DSS-DES-CBC3-SHA:DH-RSA-DES-CBC3-SHA:DH-DSS-DES-CBC3-SHA:AECDH-DES-CBC3-SHA:ADH-DES-CBC3-SHA:ECDH-RSA-DES-CBC3-SHA:ECDH-ECDSA-DES-CBC3-SHA:DES-CBC3-SHA:DES-CBC3-MD5:RSA-PSK-3DES-EDE-CBC-SHA:PSK-3DES-EDE-CBC-SHA:KRB5-DES-CBC3-SHA:KRB5-DES-CBC3-MD5:EXP1024-DHE-DSS-DES-CBC-SHA:EDH-RSA-DES-CBC-SHA:EDH-DSS-DES-CBC-SHA:DH-RSA-DES-CBC-SHA:DH-DSS-DES-CBC-SHA:ADH-DES-CBC-SHA:EXP1024-DES-CBC-SHA:DES-CBC-SHA:DES-CBC-MD5:KRB5-DES-CBC-SHA:KRB5-DES-CBC-MD5:EXP-EDH-RSA-DES-CBC-SHA:EXP-EDH-DSS-DES-CBC-SHA:EXP-DH-RSA-DES-CBC-SHA:EXP-DH-DSS-DES-CBC-SHA:EXP-ADH-DES-CBC-SHA:EXP-DES-CBC-SHA:EXP-RC2-CBC-MD5:EXP-RC2-CBC-MD5:EXP-KRB5-RC2-CBC-SHA:EXP-KRB5-DES-CBC-SHA:EXP-KRB5-RC2-CBC-MD5:EXP-KRB5-DES-CBC-MD5"
if [[ $VULN_COUNT -le $VULN_THRESHLD ]] || $WIDE; then
outln
pr_blue "--> Testing for BEAST vulnerability" && outln "\n"
fi
pr_bold " BEAST"; out " (CVE-2011-3389) "
$WIDE && outln
>$ERRFILE
# 2) test handfull of common CBC ciphers
for proto in ssl3 tls1; do
$OPENSSL s_client -"$proto" $STARTTLS -connect $NODEIP:$PORT $PROXY $SNI >$TMPFILE 2>>$ERRFILE </dev/null
if [[ $? -ne 0 ]]; then # protocol supported?
if $continued; then # second round: we hit TLS1:
pr_litegreenln "no SSL3 or TLS1"
return 0
else # protocol not succeeded but it';s the first time
continued=true
continue # protocol no supported, so we do not need to check each cipher with that protocol
fi
fi # protocol succeeded
# protocol with cbc_cipher check follows now
if $WIDE; then
outln "\n $(toupper $proto):";
neat_header # NOTTHATNICE: we display the header also if in the end no cbc cipher is available on the client side
fi
while read hexcode dash cbc_cipher sslvers kx auth enc mac; do
$OPENSSL s_client -cipher "$cbc_cipher" -"$proto" $STARTTLS -connect $NODEIP:$PORT $PROXY $SNI >$TMPFILE 2>>$ERRFILE </dev/null
openssl_ret=$?
[[ $openssl_ret -eq 0 ]] && vuln_beast=true
if $WIDE; then
normalize_ciphercode $hexcode
if [[ "$SHOW_EACH_C" -ne 0 ]]; then
neat_list $HEXC $cbc_cipher $kx $enc
if [[ $openssl_ret -eq 0 ]]; then
pr_brownln "available"
else
outln "not a/v"
fi
else
[[ $openssl_ret -eq 0 ]] && neat_list $HEXC $cbc_cipher $kx $enc && outln
fi
else # short display:
if [[ $openssl_ret -eq 0 ]]; then
detected_cbc_ciphers="$detected_cbc_ciphers ""$(grep -aw "Cipher" $TMPFILE | egrep -avw "New|is" | sed -e 's/^.*Cipher.*://' -e 's/ //g')"
vuln_beast=true
fi
fi
done < <($OPENSSL ciphers -V 'ALL:eNULL' 2>>$ERRFILE | grep -a CBC) # -V doesn't work with openssl < 1.0
# ^^^^^ process substitution as shopt will either segfault or doesn't work with old bash versions
if ! $WIDE; then
if [[ -n "$detected_cbc_ciphers" ]]; then
detected_cbc_ciphers=$(echo "$detected_cbc_ciphers" | sed -e "s/ /\\${cr} ${spaces}/9" -e "s/ /\\${cr} ${spaces}/6" -e "s/ /\\${cr} ${spaces}/3")
! $first && out "$spaces"
out "$(toupper $proto):"; pr_brownln "$detected_cbc_ciphers"
detected_cbc_ciphers="" # empty for next round
first=false
else
[[ $proto == "tls1" ]] && ! $first && echo -n "$spaces"
pr_litegreenln "no CBC ciphers for $(toupper $proto) (OK)"
first=false
fi
else
$vuln_beast || pr_litegreenln " no CBC ciphers for $(toupper $proto) (OK)"
fi
done # for proto in ssl3 tls1
# 2) support for TLS 1.1+1.2?
for proto in tls1_1 tls1_2; do
$OPENSSL s_client -state -"$proto" $STARTTLS -connect $NODEIP:$PORT $PROXY $SNI 2>>$ERRFILE >$TMPFILE </dev/null
if [[ $? -eq 0 ]]; then
higher_proto_supported="$higher_proto_supported ""$(grep -aw "Protocol" $TMPFILE | sed -e 's/^.*Protocol .*://' -e 's/ //g')"
fi
done
if $vuln_beast ; then
if [[ ! -z "$higher_proto_supported" ]]; then
if $WIDE; then
outln
pr_brown "VULNERABLE"
ret=1
outln " -- but also supports higher protocols (possible mitigation):$higher_proto_supported"
else
outln "${spaces}-- but also supports higher protocols (possible mitigation):$higher_proto_supported"
fi
fi
fi
# printf "For a full individual test of each CBC cipher suites support by your $OPENSSL run \"$0 -x CBC $NODE\"\n"
tmpfile_handle $FUNCNAME.txt
return
}
run_lucky13() {
#FIXME: to do . CVE-2013-0169
# in a nutshell: don't offer CBC suites (again). MAC as a fix for padding oracles is not enough. Best: TLS v1.2+ AES GCM
echo "FIXME"
return -1
}
# https://tools.ietf.org/html/rfc7465 REQUIRES that TLS clients and servers NEVER negotiate the use of RC4 cipher suites!
# https://en.wikipedia.org/wiki/Transport_Layer_Security#RC4_attacks
# http://blog.cryptographyengineering.com/2013/03/attack-of-week-rc4-is-kind-of-broken-in.html
run_rc4() {
local -i rc4_offered=0
local hexcode dash rc4_cipher sslvers kx auth enc mac export
local rc4_ciphers_list="ECDHE-RSA-RC4-SHA:ECDHE-ECDSA-RC4-SHA:DHE-DSS-RC4-SHA:AECDH-RC4-SHA:ADH-RC4-MD5:ECDH-RSA-RC4-SHA:ECDH-ECDSA-RC4-SHA:RC4-SHA:RC4-MD5:RC4-MD5:RSA-PSK-RC4-SHA:PSK-RC4-SHA:KRB5-RC4-SHA:KRB5-RC4-MD5:RC4-64-MD5:EXP1024-DHE-DSS-RC4-SHA:EXP1024-RC4-SHA:EXP-ADH-RC4-MD5:EXP-RC4-MD5:EXP-RC4-MD5:EXP-KRB5-RC4-SHA:EXP-KRB5-RC4-MD5"
if [[ $VULN_COUNT -le $VULN_THRESHLD ]] || $WIDE; then
outln
pr_blue "--> Checking for vulnerable RC4 Ciphers" ; outln "\n"
fi
pr_bold " RC4"; out " (CVE-2013-2566, CVE-2015-2808) "
$OPENSSL ciphers -V 'RC4:@STRENGTH' >$TMPFILE 2>$ERRFILE # -V doesn't work with openssl < 1.0, feeding this into the while loop below
$OPENSSL s_client -cipher $rc4_ciphers_list $STARTTLS -connect $NODEIP:$PORT $PROXY $SNI &>/dev/null </dev/null
if [[ $? -eq 0 ]]; then
# FF >=39 won't connect to them unless it's in this white list: http://mxr.mozilla.org/mozilla-central/source/security/manager/ssl/IntolerantFallbackList.inc
pr_litered "VULNERABLE (NOT ok): "
$WIDE && outln "\n"
rc4_offered=1
$WIDE && neat_header
while read hexcode dash rc4_cipher sslvers kx auth enc mac; do
$OPENSSL s_client -cipher $rc4_cipher $STARTTLS -connect $NODEIP:$PORT $PROXY $SNI </dev/null &>/dev/null
ret=$? # here we have a fp with openssl < 1.0
if [[ $ret -ne 0 ]] && [[ "$SHOW_EACH_C" -eq 0 ]]; then
continue # no successful connect AND not verbose displaying each cipher
fi
if $WIDE; then
normalize_ciphercode $hexcode
neat_list $HEXC $rc4_cipher $kx $enc
if [[ "$SHOW_EACH_C" -ne 0 ]]; then
if [[ $ret -eq 0 ]]; then
pr_litered "available"
else
out "not a/v"
fi
else
rc4_offered=1
out
fi
outln
else
pr_litered "$rc4_cipher "
fi
done < $TMPFILE
# ^^^^^ posix redirect as shopt will either segfault or doesn't work with old bash versions
outln
else
pr_litegreenln "no RC4 ciphers detected (OK)"
rc4_offered=0
fi
outln
tmpfile_handle $FUNCNAME.txt
return $rc4_offered
}
run_youknowwho() {
# CVE-2013-2566,
# NOT FIXME as there's no code: http://www.isg.rhul.ac.uk/tls/
# http://blog.cryptographyengineering.com/2013/03/attack-of-week-rc4-is-kind-of-broken-in.html
return 0
# in a nutshell: don't use RC4, really not!
}
# https://www.usenix.org/conference/woot13/workshop-program/presentation/smyth
# https://secure-resumption.com/tlsauth.pdf
run_tls_truncation() {
#FIXME: difficult to test, is there any test available: pls let me know
:
}
old_fart() {
outln "Get precompiled bins or compile https://github.com/PeterMosmans/openssl ."
fatal "Your $OPENSSL $OSSL_VER version is an old fart... . It doesn\'t make much sense to proceed." -2
}
# try very hard to determine th install path to get ahold of the mapping file
# it provides "keycode/ RFC style name", see RFCs, cipher(1), www.carbonwind.net/TLS_Cipher_Suites_Project/tls_ssl_cipher_suites_simple_table_all.htm
get_install_dir() {
#INSTALL_DIR=$(cd "$(dirname "$0")" && pwd)/$(basename "$0")
INSTALL_DIR=$(dirname ${BASH_SOURCE[0]})
[[ -r "$RUN_DIR/mapping-rfc.txt" ]] && MAPPING_FILE_RFC="$RUN_DIR/mapping-rfc.txt"
[[ -r "$INSTALL_DIR/mapping-rfc.txt" ]] && MAPPING_FILE_RFC="$INSTALL_DIR/mapping-rfc.txt"
# we haven't found the mapping file yet...
if [[ ! -r "$MAPPING_FILE_RFC" ]] && which readlink &>/dev/null ; then
readlink -f ls &>/dev/null && \
INSTALL_DIR=$(readlink -f $(basename ${BASH_SOURCE[0]})) || \
INSTALL_DIR=$(readlink $(basename ${BASH_SOURCE[0]}))
# not sure whether Darwin has -f
INSTALL_DIR=$(dirname $INSTALL_DIR 2>/dev/null)
[[ -r "$INSTALL_DIR/mapping-rfc.txt" ]] && MAPPING_FILE_RFC="$INSTALL_DIR/mapping-rfc.txt"
fi
# still no mapping file:
if [[ ! -r "$MAPPING_FILE_RFC" ]] && which realpath &>/dev/null ; then
INSTALL_DIR=$(dirname $(realpath ${BASH_SOURCE[0]}))
MAPPING_FILE_RFC="$INSTALL_DIR/mapping-rfc.txt"
fi
[[ ! -r "$MAPPING_FILE_RFC" ]] && unset MAPPING_FILE_RFC && pr_litemagentaln "\nNo mapping file found"
debugme echo "$MAPPING_FILE_RFC"
}
test_openssl_suffix() {
local naming_ext="$(uname).$(uname -m)"
local uname_arch="$(uname -m)"
local myarch_suffix=""
[[ $uname_arch =~ 64 ]] && myarch_suffix=64 || myarch_suffix=32
if [[ -f "$1/openssl" ]] && [[ -x "$1/openssl" ]]; then
OPENSSL="$1/openssl"
return 0
elif [[ -f "$1/openssl.$naming_ext" ]] && [[ -x "$1/openssl.$naming_ext" ]]; then
OPENSSL="$1/openssl.$naming_ext"
return 0
elif [[ -f "$1/openssl.$uname_arch" ]] && [[ -x "$1/openssl.$uname_arch" ]]; then
OPENSSL="$1/openssl.$uname_arch"
return 0
elif [[ -f "$1/openssl$myarch_suffix" ]] && [[ -x "$1/openssl$myarch_suffix" ]]; then
OPENSSL="$1/openssl$myarch_suffix"
return 0
fi
return 1
}
find_openssl_binary() {
# 0. check environment variable whether it's executable
if [[ -n "$OPENSSL" ]] && [[ ! -x "$OPENSSL" ]]; then
pr_litemagentaln "\ncannot find specified (\$OPENSSL=$OPENSSL) binary."
outln " Looking some place else ..."
elif [[ -x "$OPENSSL" ]]; then
: # 1. all ok supplied $OPENSSL was found and has excutable bit set -- testrun comes below
elif test_openssl_suffix $RUN_DIR; then
: # 2. otherwise try openssl in path of testssl.sh
elif test_openssl_suffix $RUN_DIR/bin; then
: # 3. otherwise here, this is supposed to be the standard --platform independed path in the future!!!
elif test_openssl_suffix "$(dirname "$(which openssl)")"; then
: # 5. we tried hard and failed, so now we use the system binaries
fi
# no ERRFILE initialized yet, thus we use /dev/null for stderr directly
$OPENSSL version -a 2>/dev/null >/dev/null
if [[ $? -ne 0 ]] || [[ ! -x "$OPENSSL" ]]; then
fatal "\ncannot exec or find any openssl binary" -1
fi
# http://www.openssl.org/news/openssl-notes.html
OSSL_VER=$($OPENSSL version 2>/dev/null | awk -F' ' '{ print $2 }')
OSSL_VER_MAJOR=$(echo "$OSSL_VER" | sed 's/\..*$//')
OSSL_VER_MINOR=$(echo "$OSSL_VER" | sed -e 's/^.\.//' | tr -d '[a-zA-Z]-')
OSSL_VER_APPENDIX=$(echo "$OSSL_VER" | tr -d '0-9.')
OSSL_VER_PLATFORM=$($OPENSSL version -p 2>/dev/null | sed 's/^platform: //')
OSSL_BUILD_DATE=$($OPENSSL version -a 2>/dev/null | grep '^built' | sed -e 's/built on//' -e 's/: ... //' -e 's/: //' -e 's/ UTC//' -e 's/ +0000//' -e 's/.000000000//')
echo $OSSL_BUILD_DATE | grep -q "not available" && OSSL_BUILD_DATE=""
if $OPENSSL version 2>/dev/null | grep -qi LibreSSL; then
HAS_DH_BITS=false # as of version 2.2.1
else
[[ $OSSL_VER_MAJOR -ne 1 ]] && HAS_DH_BITS=false
[[ "$OSSL_VER_MINOR" == "0.1" ]] && HAS_DH_BITS=false
fi
if $OPENSSL version 2>/dev/null | grep -qi LibreSSL; then
outln
pr_litemagenta "Please note: LibreSSL is not a good choice for testing INSECURE features!"
fi
$OPENSSL s_client -ssl2 2>&1 | grep -aq "unknown option" || \
HAS_SSL2=true && \
HAS_SSL2=false
$OPENSSL s_client -ssl3 2>&1 | grep -aq "unknown option" || \
HAS_SSL3=true && \
HAS_SSL3=false
return 0
}
openssl_age() {
case "$OSSL_VER" in
0.9.7*|0.9.6*|0.9.5*)
# 0.9.5a was latest in 0.9.5 an released 2000/4/1, that'll NOT suffice for this test
old_fart ;;
0.9.8)
case $OSSL_VER_APPENDIX in
a|b|c|d|e) old_fart;; # no SNI!
# other than that we leave this for MacOSX and FreeBSD but it's a pain and likely gives false negatives/positives
esac
;;
esac
if [[ $OSSL_VER_MAJOR -lt 1 ]]; then ## mm: Patch for libressl
pr_magentaln " Your \"$OPENSSL\" is way too old (<version 1.0) !"
case $SYSTEM in
*BSD|Darwin)
outln " Please use binary provided in \$INSTALLDIR/bin/ or from ports/brew or compile from github.com/PeterMosmans/openssl" ;;
*) outln " Update openssl binaries or compile from github.com/PeterMosmans/openssl" ;;
esac
ignore_no_or_lame " Type \"yes\" to accept some false negatives or positives "
fi
outln
}
help() {
cat << EOF
$PROG_NAME <options>
-h, --help what you're looking at
-b, --banner displays banner + version of $PROG_NAME
-v, --version same as previous
-V, --local pretty print all local ciphers
-V, --local <pattern> which local ciphers with <pattern> are available?
(if pattern not a number: word match)
$PROG_NAME <options> URI ("$PROG_NAME URI" does everything except -E)
-e, --each-cipher checks each local cipher remotely
-E, --cipher-per-proto checks those per protocol
-f, --ciphers checks common cipher suites
-p, --protocols checks TLS/SSL protocols
-S, --server_defaults displays the servers default picks and certificate info
-P, --preference displays the servers picks: protocol+cipher
-y, --spdy, --npn checks for SPDY/NPN
-x, --single-cipher <pattern> tests matched <pattern> of ciphers
(if <pattern> not a number: word match)
-U, --vulnerable tests all vulnerabilities
-B, --heartbleed tests for heartbleed vulnerability
-I, --ccs, --ccs-injection tests for CCS injection vulnerability
-R, --renegotiation tests for renegotiation vulnerabilities
-C, --compression, --crime tests for CRIME vulnerability
-T, --breach tests for BREACH vulnerability
-O, --poodle tests for POODLE (SSL) vulnerability
-Z, --tls-fallback checks TLS_FALLBACK_SCSV mitigation
-F, --freak tests for FREAK vulnerability
-A, --beast tests for BEAST vulnerability
-J, --logjam tests for LOGJAM vulnerability
-s, --pfs, --fs,--nsa checks (perfect) forward secrecy settings
-4, --rc4, --appelbaum which RC4 ciphers are being offered?
-H, --header, --headers tests HSTS, HPKP, server/app banner, security headers, cookie, reverse proxy, IPv4 address
special invocations:
-t, --starttls <protocol> does a default run against a STARTTLS enabled <protocol>
--xmpphost <to_domain> for STARTTLS enabled XMPP it supplies the XML stream to-'' domain -- sometimes needed
--mx <domain/host> tests MX records from high to low priority (STARTTLS, port 25)
--ip <ipv4> a) tests the supplied <ipv4> instead of resolving host(s) in URI
b) arg "one" means: just test the first DNS returns (useful for multiple IPs)
--file <file name> mass testing option: Just put multiple $PROG_NAME command lines in <file name>,
one line per instance. Comments via # allowed, EOF signals end of <file name>.
partly mandatory parameters:
URI host|host:port|URL|URL:port (port 443 is assumed unless otherwise specified)
pattern an ignore case word pattern of cipher hexcode or any other string in the name, kx or bits
protocol is one of ftp,smtp,pop3,imap,xmpp,telnet,ldap (for the latter two you need e.g. the supplied openssl)
tuning options:
--assuming-http if protocol check fails it assumes HTTP protocol and enforces HTTP checks
--ssl-native fallback to checks with OpenSSL where sockets are normally used
--openssl <PATH> use this openssl binary (default: look in \$PATH, \$RUN_DIR of $PROG_NAME
--proxy <host>:<port> connect via the specified HTTP proxy
--sneaky be less verbose wrt referer headers
--quiet don't output the banner. By doing this you acknowledge usage terms normally appearing in the banner
--wide wide output for tests like RC4, BEAST. PFS also with hexcode, kx, strength, RFC name
--show-each for wide outputs: display all ciphers tested -- not only succeeded ones
--warnings <batch|off|false> "batch" doesn't wait for keypress, "off" or "false" skips connection warning
--color <0|1|2> 0: no escape or other codes, 1: b/w escape codes, 2: color (default)
--debug <0-6> 1: screen output normal but debug output in temp files. 2-6: see line ~105
All options requiring a value can also be called with '=' (e.g. testssl.sh -t=smtp --wide --openssl=/usr/bin/openssl <URI>.
<URI> is always the last parameter.
Need HTML output? Just pipe through "aha" (Ansi HTML Adapter: github.com/theZiz/aha) like
"$PROG_NAME <options> <URI> | aha >output.html"
EOF
exit $1
}
mybanner() {
local nr_ciphers
local idtag
local bb
local openssl_location="$(which $OPENSSL)"
local cwd=""
$QUIET && return
nr_ciphers=$(count_ciphers "$($OPENSSL ciphers 'ALL:COMPLEMENTOFALL:@STRENGTH' 2>/dev/null)")
[[ -z "$GIT_REL" ]] && \
idtag="$CVS_REL" || \
idtag="$GIT_REL -- $CVS_REL_SHORT"
[[ "$COLOR" -ne 0 ]] && idtag="\033[1;30m$idtag\033[m\033[1m"
bb=$(cat <<EOF
###########################################################
$PROG_NAME $VERSION from $SWURL
($idtag)
This program is free software. Distribution and
modification under GPLv2 permitted.
USAGE w/o ANY WARRANTY. USE IT AT YOUR OWN RISK!
Please file bugs @ https://testssl.sh/bugs/
###########################################################
EOF
)
pr_bold "$bb"
outln "\n"
outln " Using \"$($OPENSSL version 2>/dev/null)\" [~$nr_ciphers ciphers] on"
out " $(hostname):"
[[ -n "$GIT_REL" ]] && \
cwd=$(/bin/pwd) || \
cwd=$RUN_DIR
if [[ "$openssl_location" =~ $(/bin/pwd)/bin ]]; then
echo "\$PWD/bin/$(basename "$openssl_location")"
elif [[ "$openssl_location" =~ $cwd ]] && [[ "$cwd" != '.' ]]; then
echo "${openssl_location%%$cwd}"
else
echo "$openssl_location"
fi
outln " (built: \"$OSSL_BUILD_DATE\", platform: \"$OSSL_VER_PLATFORM\")\n"
}
maketempf() {
TEMPDIR=$(mktemp -d /tmp/ssltester.XXXXXX) || exit -6
TMPFILE=$TEMPDIR/tempfile.txt || exit -6
if [[ "$DEBUG" -eq 0 ]]; then
ERRFILE="/dev/null"
else
ERRFILE=$TEMPDIR/errorfile.txt || exit -6
>$ERRFILE
fi
HOSTCERT=$TEMPDIR/host_certificate.txt
HEADERFILE=$TEMPDIR/http_header.txt
HEADERFILE_BREACH=$TEMPDIR/http_header_breach.txt
LOGFILE=$TEMPDIR/logfile.txt
initialize_engine
if [[ $DEBUG -ne 0 ]]; then
cat >$TEMPDIR/environment.txt << EOF
CVS_REL: $CVS_REL
GIT_REL: $GIT_REL
PID: $$
bash version: ${BASH_VERSINFO[0]}.${BASH_VERSINFO[1]}.${BASH_VERSINFO[2]}
status: ${BASH_VERSINFO[4]}
machine: ${BASH_VERSINFO[5]}
operating system: $SYSTEM
shellopts: $SHELLOPTS
$OPENSSL version -a:
$($OPENSSL version -a)
OSSL_VER_MAJOR: $OSSL_VER_MAJOR
OSSL_VER_MINOR: $OSSL_VER_MINOR
OSSL_VER_APPENDIX: $OSSL_VER_APPENDIX
OSSL_BUILD_DATE: "$OSSL_BUILD_DATE"
OSSL_VER_PLATFORM: "$OSSL_VER_PLATFORM"
OPENSSL_CONF: $OPENSSL_CONF
PATH: $PATH
PROG_NAME: $PROG_NAME
INSTALL_DIR: $INSTALL_DIR
RUN_DIR: $RUN_DIR
MAPPING_FILE_RFC: $MAPPING_FILE_RFC
CAPATH: $CAPATH
ECHO: $ECHO
COLOR: $COLOR
TERM_DWITH: $TERM_DWITH
HAS_GNUDATE: $HAS_GNUDATE
HAS_SED_E: $HAS_SED_E
SHOW_EACH_C: $SHOW_EACH_C
SSL_NATIVE: $SSL_NATIVE
ASSUMING_HTTP $ASSUMING_HTTP
SNEAKY: $SNEAKY
DEBUG: $DEBUG
HSTS_MIN: $HSTS_MIN
HPKP_MIN: $HPKP_MIN
CLIENT_MIN_PFS: $CLIENT_MIN_PFS
DAYS2WARN1: $DAYS2WARN1
DAYS2WARN2: $DAYS2WARN2
HEADER_MAXSLEEP: $HEADER_MAXSLEEP
MAX_WAITSOCK: $MAX_WAITSOCK
HEARTBLEED_MAX_WAITSOCK: $HEARTBLEED_MAX_WAITSOCK
CCS_MAX_WAITSOCK: $CCS_MAX_WAITSOCK
USLEEP_SND $USLEEP_SND
USLEEP_REC $USLEEP_REC
EOF
which locale &>/dev/null && locale >>$TEMPDIR/environment.txt || echo "locale doesn't exist" >>$TEMPDIR/environment.txt
$OPENSSL ciphers -V 'ALL:COMPLEMENTOFALL' &>$TEMPDIR/all_local_ciphers.txt
fi
}
cleanup () {
if [[ "$DEBUG" -ge 1 ]]; then
outln
pr_underline "DEBUG (level $DEBUG): see files in $TEMPDIR"
outln
else
[[ -d "$TEMPDIR" ]] && rm -rf "$TEMPDIR";
fi
outln
}
fatal() {
pr_magentaln "Fatal error: $1" >&2
exit $2
}
# for now only GOST engine
initialize_engine(){
grep -q '^# testssl config file' "$OPENSSL_CONF" 2>/dev/null && return 0 # have been here already
if ! $OPENSSL engine gost -vvvv -t -c 2>/dev/null >/dev/null; then
outln
pr_litemagenta "No engine or GOST support via engine with your $OPENSSL"; outln
return 1
elif $OPENSSL engine gost -vvvv -t -c 2>&1 | grep -iq "No such" ; then
outln
pr_litemagenta "No engine or GOST support via engine with your $OPENSSL"; outln
return 1
else # we have engine support
if [[ -n "$OPENSSL_CONF" ]]; then
pr_litemagentaln "For now I am providing the config file in to have GOST support"
else
OPENSSL_CONF=$TEMPDIR/gost.conf || exit -6
# see https://www.mail-archive.com/openssl-users@openssl.org/msg65395.html
cat >$OPENSSL_CONF << EOF
# testssl config file for openssl
openssl_conf = openssl_def
[ openssl_def ]
engines = engine_section
[ engine_section ]
gost = gost_section
[ gost_section ]
engine_id = gost
default_algorithms = ALL
CRYPT_PARAMS = id-Gost28147-89-CryptoPro-A-ParamSet
EOF
export OPENSSL_CONF
fi
fi
return 0
}
ignore_no_or_lame() {
local a
[[ "$WARNINGS" == "off" ]] && return 0
[[ "$WARNINGS" == "false" ]] && return 0
[[ "$WARNINGS" == "batch" ]] && return 1
pr_magenta "$1 "
read a
case $a in
Y|y|Yes|YES|yes) return 0;;
default) ;;
esac
return 1
}
# arg1: URI
# arg2: protocol
parse_hn_port() {
local tmp_port
NODE="$1"
# strip "https" and trailing urlpath supposed it was supplied additionally
echo "$NODE" | grep -q 'https://' && NODE=$(echo "$NODE" | sed -e 's/^https\:\/\///')
# strip trailing urlpath
NODE=$(echo "$NODE" | sed -e 's/\/.*$//')
# was the address supplied like [AA:BB:CC::]:port ?
if echo "$NODE" | grep -q ']' ; then
tmp_port=$(printf "$NODE" | sed 's/\[.*\]//' | sed 's/://')
# determine v6 port, supposed it was supplied additionally
if [[ -n "$tmp_port" ]]; then
PORT=$tmp_port
NODE=$(sed "s/:$PORT//" <<< "$NODE")
fi
NODE=$(sed -e 's/\[//' -e 's/\]//' <<< "$NODE")
else
# determine v4 port, supposed it was supplied additionally
echo "$NODE" | grep -q ':' && \
PORT=$(echo "$NODE" | sed 's/^.*\://') && NODE=$(echo "$NODE" | sed 's/\:.*$//')
fi
debugme echo $NODE:$PORT
SNI="-servername $NODE"
URL_PATH=$(echo "$1" | sed 's/https:\/\///' | sed 's/'"${NODE}"'//' | sed 's/.*'"${PORT}"'//') # remove protocol and node part and port
URL_PATH=$(echo "$URL_PATH" | sed 's/\/\//\//g') # we rather want // -> /
[[ -z "$URL_PATH" ]] && URL_PATH="/"
debugme echo $URL_PATH
return 0 # NODE, URL_PATH, PORT is set now
}
is_ipv4addr() {
local octet="(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])"
local ipv4address="$octet\\.$octet\\.$octet\\.$octet"
[[ -z "$1" ]] && return 1
# more than numbers, important for hosts like AAA.BBB.CCC.DDD.in-addr.arpa.DOMAIN.TLS
[[ -n $(tr -d '0-9\.' <<< "$1") ]] && return 1
echo -n "$1" | grep -Eq "$ipv4address" && \
return 0 || \
return 1
}
# a bit easier
is_ipv6addr() {
[[ -z "$1" ]] && return 1
# less than 2x ":"
[[ $(count_lines "$(echo -n "$1" | tr ':' '\n')") -le 1 ]] && \
return 1
#check on chars allowed:
[[ -n "$(tr -d '0-9:a-fA-F ' <<< "$1" | sed -e '/^$/d')" ]] && \
return 1
return 0
}
# args: string containing ip addresses
filter_ip6_address() {
local a
for a in "$@"; do
if ! is_ipv6addr "$a"; then
continue
fi
if $HAS_SED_E; then
echo "$a" | sed -E 's/^abcdeABCDEFf0123456789:]//g' | sed -e '/^$/d' -e '/^;;/d'
else
echo "$a" | sed -r 's/[^abcdefABCDEF0123456789:]//g' | sed -e '/^$/d' -e '/^;;/d'
fi
done
}
filter_ip4_address() {
local a
for a in "$@"; do
if ! is_ipv4addr "$a"; then
continue
fi
if $HAS_SED_E; then
echo "$a" | sed -E 's/[^[:digit:].]//g' | sed -e '/^$/d'
else
echo "$a" | sed -r 's/[^[:digit:].]//g' | sed -e '/^$/d'
fi
done
}
get_local_aaaa() {
local ip6=""
local etchosts="/etc/hosts /c/Windows/System32/drivers/etc/hosts"
# for security testing sometimes we have local entries. Getent is BS under Linux for localhost: No network, no resolution
ip6=$(grep -wh "$NODE" $etchosts 2>/dev/null | grep ':' | grep -v '^#' | egrep "[[:space:]]$NODE" | awk '{ print $1 }')
if is_ipv6addr "$ip6"; then
echo "$ip6"
else
echo ""
fi
}
get_local_a() {
local ip4=""
local etchosts="/etc/hosts /c/Windows/System32/drivers/etc/hosts"
# for security testing sometimes we have local entries. Getent is BS under Linux for localhost: No network, no resolution
ip4=$(grep -wh "$1" $etchosts 2>/dev/null | egrep -v ':|^#' | egrep "[[:space:]]$1" | awk '{ print $1 }')
if is_ipv4addr "$ip4"; then
echo "$ip4"
else
echo ""
fi
}
# arg1: a host name. Returned will be 0-n IPv4 addresses
get_a_record() {
local ip4=""
local saved_openssl_conf="$OPENSSL_CONF"
OPENSSL_CONF="" # see https://github.com/drwetter/testssl.sh/issues/134
if [[ -z "$ip4" ]]; then
which dig &> /dev/null && \
ip4=$(filter_ip4_address $(dig +short -t a "$1" 2>/dev/null | sed '/^;;/d'))
fi
if [[ -z "$ip4" ]]; then
which host &> /dev/null && \
ip4=$(filter_ip4_address $(host -t a "$1" 2>/dev/null | grep -v alias | sed 's/^.*address //'))
fi
if [[ -z "$ip4" ]]; then
if which nslookup &>/dev/null; then
# filtering from Name to EOF, remove iline with 'Name', the filter out non-numbers and ".'", and empty lines
ip4=$(filter_ip4_address $(nslookup -querytype=a "$1" 2>/dev/null | awk '/^Name/,/EOF/ { print $0 }' | grep -v Name))
fi
fi
OPENSSL_CONF="$saved_openssl_conf" # see https://github.com/drwetter/testssl.sh/issues/134
echo "$ip4"
}
# arg1: a host name. Returned will be 0-n IPv6 addresses
get_aaaa_record() {
local ip6=""
local saved_openssl_conf="$OPENSSL_CONF"
OPENSSL_CONF="" # see https://github.com/drwetter/testssl.sh/issues/134
if [[ -z "$ip6" ]]; then
if which host &> /dev/null ; then
ip6=$(filter_ip6_address $(host -t aaaa "$NODE" | grep -v alias | grep -v "no AAAA record" | sed 's/^.*address //'))
elif which dig &> /dev/null; then
ip6=$(filter_ip6_address $(dig +short -t aaaa "$NODE" 2>/dev/null))
elif which nslookup &>/dev/null; then
# same as above. Only we're using grep -A instead of awk
ip6=$(filter_ip6_address $(nslookup -type=aaaa "$NODE" 2>/dev/null | grep -A10 Name | grep -v Name))
fi
fi
OPENSSL_CONF="$saved_openssl_conf" # see https://github.com/drwetter/testssl.sh/issues/134
echo "$ip6"
}
# now get all IP addresses
determine_ip_addresses() {
local ip4=""
local ip6=""
if is_ipv4addr "$NODE"; then
ip4="$NODE" # only an IPv4 address was supplied as an argument, no hostname
SNI="" # override Server Name Indication as we test the IP only
else
ip4=$(get_local_a $NODE) # is there a local host entry?
if [[ -z $ip4 ]]; then # empty: no (LOCAL_A is predefined as false)
ip4=$(get_a_record $NODE)
else
LOCAL_A=true # we have the ip4 from local host entry and need to set this
fi
# same now for ipv6 (though not supported) <-- can't do this yet as it shows up under "further IP addresses"
# and we didn't bother to show the fact that it is local there
ip6=$(get_local_aaaa $NODE)
#if [[ -z $ip6 ]]; then
ip6=$(get_aaaa_record $NODE)
#else
# LOCAL_AAAA=true # we have the ip4 from local host entry and need to set this
#fi
fi
IPADDRs=$(newline_to_spaces "$ip4")
if [[ -z "$IPADDRs" ]] && [[ -z "$CMDLINE_IP" ]]; then
fatal "No IPv4 address for \"$NODE\" available" -1
fi
[[ -z "$ip6" ]] && IP46ADDRs="$IPADDRs" || IP46ADDRs="$ip4 $ip6"
IP46ADDRs=$(newline_to_spaces "$IP46ADDRs")
return 0 # IPADDR and IP46ADDR is set now
}
determine_rdns() {
local saved_openssl_conf="$OPENSSL_CONF"
OPENSSL_CONF="" # see https://github.com/drwetter/testssl.sh/issues/134
if which dig &> /dev/null; then
rDNS=$(dig -x $NODEIP +noall +answer | awk '/PTR/ { print $NF }') # +short returns also CNAME, e.g. openssl.org
elif which host &> /dev/null; then
rDNS=$(host -t PTR $NODEIP 2>/dev/null | awk '/pointer/ { print $NF }')
elif which nslookup &> /dev/null; then
rDNS=$(nslookup -type=PTR $NODEIP 2>/dev/null | grep -v 'canonical name =' | grep 'name = ' | awk '{ print $NF }' | sed 's/\.$//')
fi
OPENSSL_CONF="$saved_openssl_conf" # see https://github.com/drwetter/testssl.sh/issues/134
rDNS=$(echo $rDNS)
[[ -z "$rDNS" ]] && rDNS="--"
return 0
}
get_mx_record() {
local mx=""
local saved_openssl_conf="$OPENSSL_CONF"
OPENSSL_CONF="" # see https://github.com/drwetter/testssl.sh/issues/134
if which host &> /dev/null; then
mxs=$(host -t MX "$1" 2>/dev/null | grep 'handled by' | sed -e 's/^.*by //g' -e 's/\.$//')
elif which dig &> /dev/null; then
mxs=$(dig +short -t MX "$1" 2>/dev/null)
elif which nslookup &> /dev/null; then
mxs=$(nslookup -type=MX "$1" 2>/dev/null | grep 'mail exchanger = ' | sed 's/^.*mail exchanger = //g')
else
fatal "No dig, host or nslookup" -3
fi
OPENSSL_CONF="$saved_openssl_conf"
echo "$mxs"
}
# We need to get the IP address of the proxy so we can use it in fd_socket
check_proxy(){
local save_LOCAL_A=$LOCAL_A
local save_LOCAL_AAAA=$LOCAL_AAAA
if [[ -n "$PROXY" ]]; then
if ! $OPENSSL s_client help 2>&1 | grep -qw proxy; then
fatal "Your $OPENSSL is too old to support the \"--proxy\" option" -1
fi
PROXYNODE=${PROXY%:*}
PROXYPORT=${PROXY#*:}
PROXYIP=$(get_a_record $PROXYNODE 2>/dev/null | grep -v alias | sed 's/^.*address //')
LOCAL_A=$save_LOCAL_A
LOCAL_AAAA=$save_LOCAL_AAAA
# no RFC 1918:
#if ! is_ipv4addr $PROXYIP ; then
[[ -z "$PROXYIP" ]] && fatal "Proxy IP cannot be determined from \"$PROXYNODE\"" "-3"
PROXY="-proxy $PROXYIP:$PROXYPORT"
fi
}
# this function determines OPTIMAL_PROTO. It is a workaround function as under certain circumstances
# openssl 1.0.2 (as opposed to 1.0.1) needs a protocol otherwise s_client -connect will fail!
# Circumstances so far: 1.) IIS 6 2.) starttls + dovecot imap
# The first try in the loop is empty as we prefer not to specify always a protocol f it works w/o.
#
determine_optimal_proto() {
local all_failed
local addcmd=""
#TODO: maybe qeury known openssl version before this workaround
if [[ -n "$1" ]]; then
# starttls workaround needed see https://github.com/drwetter/testssl.sh/issues/188
# kind of odd
for STARTTLS_OPTIMAL_PROTO in -tls1_2 -tls1 -ssl3 -tls1_1 -ssl2; do
$OPENSSL s_client $STARTTLS_OPTIMAL_PROTO -connect "$NODEIP:$PORT" $PROXY -starttls $1 </dev/null &>/dev/null && all_failed=1 && break
all_failed=0
done
debugme echo "STARTTLS_OPTIMAL_PROTO: $STARTTLS_OPTIMAL_PROTO"
else
for OPTIMAL_PROTO in '' -tls1_2 -tls1 -ssl3 -tls1_1 -ssl2 ''; do
$OPENSSL s_client $OPTIMAL_PROTO -connect "$NODEIP:$PORT" $PROXY $SNI </dev/null &>/dev/null && all_failed=1 && break
all_failed=0
done
debugme echo "OPTIMAL_PROTO: $OPTIMAL_PROTO"
fi
if [[ $all_failed -eq 0 ]]; then
outln
pr_boldln " $NODEIP:$PORT doesn't seem a TLS/SSL enabled server or it requires a certificate";
ignore_no_or_lame " Note that the results might look ok but they are nonsense. Proceed ? "
[[ $? -ne 0 ]] && exit -2
fi
}
# arg1: ftp smtp, pop3, imap, xmpp, telnet, ldap (maybe with trailing s)
determine_service() {
local ua
local protocol
if ! fd_socket; then # check if we can connect to $NODEIP:$PORT
fatal "can't connect to \"$NODEIP:$PORT\"\nMake sure a firewall is not between you and your scanning target!" -2
fi
close_socket
datebanner "Testing"
outln
if [[ -z "$1" ]]; then # no STARTTLS. For STARTTLS we do this where it fails ("Has server cipher order")
determine_optimal_proto "$1" # in order to avoid unneccessary connects
$SNEAKY && \
ua="$UA_SNEAKY" || \
ua="$UA_STD"
GET_REQ11="GET $URL_PATH HTTP/1.1\r\nHost: $NODE\r\nUser-Agent: $ua\r\nConnection: Close\r\nAccept: text/*\r\n\r\n"
HEAD_REQ11="HEAD $URL_PATH HTTP/1.1\r\nHost: $NODE\r\nUser-Agent: $ua\r\nAccept: text/*\r\n\r\n"
GET_REQ10="GET $URL_PATH HTTP/1.0\r\nUser-Agent: $ua\r\nConnection: Close\r\nAccept: text/*\r\n\r\n"
HEAD_REQ10="HEAD $URL_PATH HTTP/1.0\r\nUser-Agent: $ua\r\nAccept: text/*\r\n\r\n"
runs_HTTP $OPTIMAL_PROTO
else # STARTTLS
protocol=$(echo "$1" | sed 's/s$//') # strip trailing s in ftp(s), smtp(s), pop3(s), imap(s), ldap(s), telnet(s)
case "$protocol" in
ftp|smtp|pop3|imap|xmpp|telnet|ldap)
STARTTLS="-starttls $protocol"
SNI=""
if [[ $protocol == "xmpp" ]]; then
# for XMPP, openssl has a problem using -connect $NODEIP:$PORT. thus we use -connect $NODE:$PORT instead!
NODEIP="$NODE"
if [[ -n "$XMPP_HOST" ]]; then
if ! $OPENSSL s_client --help 2>&1 | grep -q xmpphost; then
fatal "Your $OPENSSL does not support the \"-xmpphost\" option" -3
fi
STARTTLS="$STARTTLS -xmpphost $XMPP_HOST" # it's a hack -- instead of changing calls all over the place
# see http://xmpp.org/rfcs/rfc3920.html
fi
fi
$OPENSSL s_client -connect $NODEIP:$PORT $PROXY $STARTTLS 2>$ERRFILE >$TMPFILE </dev/null
if [[ $? -ne 0 ]]; then
debugme cat $TMPFILE
outln
fatal " $OPENSSL couldn't establish STARTTLS via $protocol to $NODEIP:$PORT" -2
fi
out " Service set: STARTTLS via "
toupper "$protocol"
[[ -n "$XMPP_HOST" ]] && echo -n " (XMPP domain=\'$XMPP_HOST\')"
outln
;;
*) outln
fatal "momentarily only ftp, smtp, pop3, imap, xmpp, telnet and ldap allowed" -1
;;
esac
fi
outln
return 0 # OPTIMAL_PROTO, GET_REQ*/HEAD_REQ* is set now
}
display_rdns_etc() {
local i
if [[ $(count_words "$(echo -n "$IP46ADDRs")") -gt 1 ]]; then
out " further IP addresses: "
for i in $IP46ADDRs; do
[[ "$i" == "$NODEIP" ]] && continue
out " $i"
done
outln
fi
[[ -n "$rDNS" ]] && printf " %-23s %s" "rDNS ($NODEIP):" "$rDNS"
if "$LOCAL_A"; then
out " (A record via /etc/hosts) "
fi
}
datebanner() {
local tojour="$(date +%F) $(date +%R)"
pr_reverse "$1 now ($tojour) ---> $NODEIP:$PORT ($NODE) <---"; outln "\n"
[[ "$1" == "Testing" ]] && display_rdns_etc
}
# one line with char $1 over screen width $2
draw_dotted_line() {
printf -- "$1"'%.s' $(eval "echo {1.."$(($2))"}")
}
mx_all_ips() {
local mxs mx
local mxport
local -i ret=0
STARTTLS_PROTOCOL="smtp"
# test first higher priority servers
mxs=$(get_mx_record "$1" | sort -n | sed -e 's/^.* //' -e 's/\.$//' | tr '\n' ' ')
mxport=${2:-25}
if [[ -n "$mxs" ]] && [[ "$mxs" != ' ' ]]; then
[[ $mxport == "465" ]] && \
STARTTLS_PROTOCOL="" # no starttls for Port 465, on all other ports we speak starttls
pr_bold "Testing now all MX records (on port $mxport): "; outln "$mxs"
for mx in $mxs; do
draw_dotted_line "-" $((TERM_DWITH * 2 / 3))
outln
parse_hn_port "$mx:$mxport"
determine_ip_addresses || continue
if [[ $(count_words "$(echo -n "$IPADDRs")") -gt 1 ]]; then # we have more than one ipv4 address to check
pr_bold "Testing all IPv4 addresses (port $PORT): "; outln "$IPADDRs"
for ip in $IPADDRs; do
NODEIP="$ip"
lets_roll "${STARTTLS_PROTOCOL}"
done
else
NODEIP="$IPADDRs"
lets_roll "${STARTTLS_PROTOCOL}"
fi
ret=$(($? + ret))
done
draw_dotted_line "-" $((TERM_DWITH * 2 / 3))
outln
pr_bold "Done testing now all MX records (on port $mxport): "; outln "$mxs"
else
pr_boldln " $1 has no MX records(s)"
fi
return $ret
}
# This initializes boolean global do_* variables. They keep track of what to do
# -- as the name insinuates
initialize_globals() {
do_allciphers=false
do_vulnerabilities=false
do_beast=false
do_breach=false
do_ccs_injection=false
do_cipher_per_proto=false
do_crime=false
do_freak=false
do_logjam=false
do_header=false
do_heartbleed=false
do_mx_all_ips=false
do_read_from_file=false
do_pfs=false
do_protocols=false
do_rc4=false
do_renego=false
do_std_cipherlists=false
do_server_defaults=false
do_server_preference=false
do_spdy=false
do_ssl_poodle=false
do_tls_fallback_scsv=false
do_test_just_one=false
do_tls_sockets=false
}
# Set default scanning options for the boolean global do_* variables.
set_scanning_defaults() {
do_allciphers=true
do_vulnerabilities=true
do_beast=true
do_breach=true
do_ccs_injection=true
do_crime=true
do_freak=true
do_logjam=true
do_header=true
do_heartbleed=true
do_pfs=true
do_protocols=true
do_rc4=true
do_renego=true
do_std_cipherlists=true
do_server_defaults=true
do_server_preference=true
do_spdy=true
do_ssl_poodle=true
do_tls_fallback_scsv=true
VULN_COUNT=10
}
query_globals() {
local gbl
local true_nr=0
for gbl in do_allciphers do_vulnerabilities do_beast do_breach do_ccs_injection do_cipher_per_proto do_crime \
do_freak do_logjam do_header do_heartbleed do_mx_all_ips do_pfs do_protocols do_rc4 do_renego \
do_std_cipherlists do_server_defaults do_server_preference do_spdy do_ssl_poodle do_tls_fallback_scsv \
do_test_just_one do_tls_sockets do_read_from_file; do
[[ "${!gbl}" == "true" ]] && let true_nr++
done
return $true_nr
}
debug_globals() {
local gbl
for gbl in do_allciphers do_vulnerabilities do_beast do_breach do_ccs_injection do_cipher_per_proto do_crime \
do_freak do_logjam do_header do_heartbleed do_rc4 do_mx_all_ips do_pfs do_protocols do_rc4 do_renego \
do_std_cipherlists do_server_defaults do_server_preference do_spdy do_ssl_poodle do_tls_fallback_scsv \
do_test_just_one do_tls_sockets do_read_from_file; do
printf "%-22s = %s\n" $gbl "${!gbl}"
done
printf "%-22s : %s\n" URI: "$URI"
}
# arg1+2 are just the options
parse_opt_equal_sign() {
if [[ "$1" == *=* ]]; then
echo "$1" | awk -F'=' '{ print $2 }'
return 1 # = means we don't need to shift args!
else
echo $2
return 0 # we need to shift
fi
}
parse_cmd_line() {
# Set defaults if only an URI was specified, maybe ToDo: use "="-option, then: ${i#*=} i.e. substring removal
[[ "$#" -eq 1 ]] && set_scanning_defaults
while [[ $# -gt 0 ]]; do
case $1 in
-h|--help)
help 0
;;
-b|--banner|-v|--version)
find_openssl_binary
maketempf
mybanner
exit 0
;;
--mx)
do_mx_all_ips=true
PORT=25
;;
--mx465) # doesn't work with major ISPs
do_mx_all_ips=true
PORT=465
;;
--mx587) # doesn't work with major ISPs
do_mx_all_ips=true
PORT=587
;;
--ip|--ip=*)
CMDLINE_IP=$(parse_opt_equal_sign "$1" "$2")
[[ $? -eq 0 ]] && shift
;;
-V|-V=*|--local|--local=*) # this is only displaying local ciphers, thus we don't put it in the loop
find_openssl_binary
maketempf # for GOST support
mybanner
openssl_age
prettyprint_local $(parse_opt_equal_sign "$1" "$2")
exit $?
;;
-x|-x=*|--single[-_]cipher|--single[-_]cipher=*)
do_test_just_one=true
single_cipher=$(parse_opt_equal_sign "$1" "$2")
[[ $? -eq 0 ]] && shift
;;
-t|-t=*|--starttls|--starttls=*)
do_starttls=true
STARTTLS_PROTOCOL=$(parse_opt_equal_sign "$1" "$2")
[[ $? -eq 0 ]] && shift
case $STARTTLS_PROTOCOL in
ftp|smtp|pop3|imap|xmpp|telnet|ldap|nntp) ;;
ftps|smtps|pop3s|imaps|xmpps|telnets|ldaps|nntps) ;;
*) pr_magentaln "\nunrecognized STARTTLS protocol \"$1\", see help" 1>&2
help 1 ;;
esac
;;
--xmpphost|--xmpphost=*)
XMPP_HOST=$(parse_opt_equal_sign "$1" "$2")
[[ $? -eq 0 ]] && shift
;;
-e|--each-cipher)
do_allciphers=true
;;
-E|--cipher-per-proto|--cipher_per_proto)
do_cipher_per_proto=true
;;
-p|--protocols)
do_protocols=true
do_spdy=true
;;
-y|--spdy|--npn)
do_spdy=true
;;
-f|--ciphers)
do_std_cipherlists=true
;;
-S|--server[-_]defaults)
do_server_defaults=true
;;
-P|--server[_-]preference)
do_server_preference=true
;;
-H|--header|--headers)
do_header=true
;;
-U|--vulnerable)
do_vulnerabilities=true
do_heartbleed=true
do_ccs_injection=true
do_renego=true
do_crime=true
do_breach=true
do_ssl_poodle=true
do_tls_fallback_scsv=true
do_freak=true
do_logjam=true
do_beast=true
do_rc4=true
VULN_COUNT=10
;;
-B|--heartbleed)
do_heartbleed=true
let "VULN_COUNT++"
;;
-I|--ccs|--ccs[-_]injection)
do_ccs_injection=true
let "VULN_COUNT++"
;;
-R|--renegotiation)
do_renego=true
let "VULN_COUNT++"
;;
-C|--compression|--crime)
do_crime=true
let "VULN_COUNT++"
;;
-T|--breach)
do_breach=true
let "VULN_COUNT++"
;;
-O|--poodle)
do_ssl_poodle=true
do_tls_fallback_scsv=true
let "VULN_COUNT++"
;;
-Z|--tls[_-]fallback|tls[_-]fallback[_-]scs)
do_tls_fallback_scsv=true
let "VULN_COUNT++"
;;
-F|--freak)
do_freak=true
let "VULN_COUNT++"
;;
-J|--logjam)
do_logjam=true
let "VULN_COUNT++"
;;
-A|--beast)
do_beast=true
let "VULN_COUNT++"
;;
-4|--rc4|--appelbaum)
do_rc4=true
let "VULN_COUNT++"
;;
-s|--pfs|--fs|--nsa)
do_pfs=true
;;
--devel) ### this development feature will soon disappear
HEX_CIPHER=""
# DEBUG=3 ./testssl.sh -q 03 "cc, 13, c0, 13" google.de
# DEBUG=3 ./testssl.sh -q 01 yandex.ru
# DEBUG=3 ./testssl.sh -q 00 <host which still supports SSLv2>
TLS_LOW_BYTE="$2";
if [[ $# -eq 4 ]]; then # protocol AND ciphers specified
HEX_CIPHER="$3"
shift
fi
shift
do_tls_sockets=true
outln "\nTLS_LOW_BYTE/HEX_CIPHER: ${TLS_LOW_BYTE}/${HEX_CIPHER}"
;;
--wide)
WIDE=true
;;
--assuming[_-]http|--assume[-_]http)
ASSUMING_HTTP=true
;;
--sneaky)
SNEAKY=true
;;
-q|--quiet)
QUIET=true
;;
--file|--file=*)
# no shift here as otherwise URI is empty and it bails out
FNAME=$(parse_opt_equal_sign "$1" "$2")
IKNOW_FNAME=true
do_read_from_file=true
;;
--warnings|--warnings=*)
WARNINGS=$(parse_opt_equal_sign "$1" "$2")
[[ $? -eq 0 ]] && shift
case "$WARNINGS" in
batch|off|false) ;;
*) pr_magentaln "\nwarnings can be either \"batch\", \"off\" or \"false\""
help 1;;
esac
;;
--show[-_]each)
SHOW_EACH_C=1 #FIXME: sense is vice versa
;;
--debug|--debug=*)
DEBUG=$(parse_opt_equal_sign "$1" "$2")
[[ $? -eq 0 ]] && shift
case $DEBUG in
[0-6]) ;;
*) pr_magentaln "\nunrecognized debug value \"$1\", must be between 0..6" 1>&2
help 1 ;;
esac
;;
--color|--color=*)
COLOR=$(parse_opt_equal_sign "$1" "$2")
[[ $? -eq 0 ]] && shift
case $COLOR in
[0-2]) ;;
*) COLOR=2
pr_magentaln "\nunrecognized color: \"$1\", must be between 0..2" 1>&2
help 1 ;;
esac
;;
--openssl|--openssl=*)
OPENSSL=$(parse_opt_equal_sign "$1" "$2")
[[ $? -eq 0 ]] && shift
;;
--proxy|--proxy=*)
PROXY=$(parse_opt_equal_sign "$1" "$2")
[[ $? -eq 0 ]] && shift
;;
--ssl_native|--ssl-native)
SSL_NATIVE=true
;;
(--) shift
break
;;
(-*) pr_magentaln "\n$0: unrecognized option \"$1\"" 1>&2;
help 1
;;
(*) break
;;
esac
shift
done
# Show usage if no options were specified
[[ -z "$1" ]] && help 0
# left off here is the URI
URI="$1"
[[ "$DEBUG" -ge 4 ]] && debug_globals
# if we have no "do_*" set here --> query_globals: we do a standard run -- otherwise just the one specified
query_globals && set_scanning_defaults
}
lets_roll() {
local ret
[[ -z "$NODEIP" ]] && fatal "$NODE doesn't resolve to an IP address" -1
determine_rdns
determine_service "$1" # any starttls service goes here
$do_tls_sockets && { [[ $TLS_LOW_BYTE -eq 0 ]] && \
sslv2_sockets || \
tls_sockets "$TLS_LOW_BYTE" "$HEX_CIPHER"; echo "$?" ; exit 0; }
$do_test_just_one && test_just_one ${single_cipher}
# all top level functions now following have the prefix "run_"
$do_protocols && { run_protocols; ret=$(($? + ret)); }
$do_spdy && { run_spdy; ret=$(($? + ret)); }
$do_std_cipherlists && { run_std_cipherlists; ret=$(($? + ret)); }
$do_pfs && { run_pfs; ret=$(($? + ret)); }
$do_server_preference && { run_server_preference; ret=$(($? + ret)); }
$do_server_defaults && { run_server_defaults; ret=$(($? + ret)); }
if $do_header; then
#TODO: refactor this into functions
if [[ $SERVICE == "HTTP" ]]; then
run_http_header "$URL_PATH"
run_http_date "$URL_PATH"
run_hsts "$URL_PATH"
run_hpkp "$URL_PATH"
run_server_banner "$URL_PATH"
run_application_banner "$URL_PATH"
run_cookie_flags "$URL_PATH"
run_more_flags "$URL_PATH"
run_rp_banner "$URL_PATH"
fi
fi
# vulnerabilities
if [[ $VULN_COUNT -gt $VULN_THRESHLD ]] || $do_vulnerabilities; then
outln; pr_blue "--> Testing vulnerabilities"
outln "\n"
fi
$do_heartbleed && { run_heartbleed; ret=$(($? + ret)); }
$do_ccs_injection && { run_ccs_injection; ret=$(($? + ret)); }
$do_renego && { run_renego; ret=$(($? + ret)); }
$do_crime && { run_crime; ret=$(($? + ret)); }
$do_breach && { run_breach "$URL_PATH" ; ret=$(($? + ret)); }
$do_ssl_poodle && { run_ssl_poodle; ret=$(($? + ret)); }
$do_tls_fallback_scsv && { run_tls_fallback_scsv; ret=$(($? + ret)); }
$do_freak && { run_freak; ret=$(($? + ret)); }
$do_logjam && { run_logjam; ret=$(($? + ret)); }
$do_beast && { run_beast; ret=$(($? + ret)); }
$do_rc4 && { run_rc4; ret=$(($? + ret)); }
$do_allciphers && { run_allciphers; ret=$(($? + ret)); }
$do_cipher_per_proto && { run_cipher_per_proto; ret=$(($? + ret)); }
outln
datebanner "Done"
return $ret
}
################# main #################
get_install_dir
initialize_globals
parse_cmd_line "$@"
set_color_functions
find_openssl_binary
maketempf
mybanner
check_proxy
openssl_age
# TODO: it's ugly to have those two vars here --> main()
ret=0
ip=""
if $do_read_from_file; then
if [[ ! -r "$FNAME" ]] && $IKNOW_FNAME; then
fatal "Can't read file \"$FNAME\"" "-1"
fi
pr_reverse "====== Running in file batch mode with file=\"$FNAME\" ======"; outln "\n"
while read cmdline; do
cmdline=$(filter_input "$cmdline")
[[ -z "$cmdline" ]] && continue
[[ "$cmdline" == "EOF" ]] && break
echo "$0 -q $cmdline"
draw_dotted_line "=" $((TERM_DWITH / 2)); outln;
$0 -q $cmdline
done < "$FNAME"
exit $?
fi
#TODO: there shouldn't be the need for a special case for --mx, only the ip adresses we would need upfront and the do-parser
if $do_mx_all_ips; then
query_globals # if we have just 1x "do_*" --> we do a standard run -- otherwise just the one specified
[[ $? -eq 1 ]] && set_scanning_defaults
mx_all_ips "${URI}" $PORT
ret=$?
else
parse_hn_port "${URI}" # NODE, URL_PATH, PORT, IPADDR and IP46ADDR is set now
if ! determine_ip_addresses && [[ -z "$CMDLINE_IP" ]]; then
fatal "No IP address could be determined"
fi
if [[ -n "$CMDLINE_IP" ]]; then
[[ "$CMDLINE_IP" == "one" ]] && \
CMDLINE_IP=$(echo -n "$IPADDRs" | awk '{ print $1 }')
NODEIP="$CMDLINE_IP" # specific ip address for NODE was supplied
lets_roll "${STARTTLS_PROTOCOL}"
ret=$?
else # no --ip was supplied
if [[ $(count_words "$(echo -n "$IPADDRs")") -gt 1 ]]; then # we have more than one ipv4 address to check
pr_bold "Testing all IPv4 addresses (port $PORT): "; outln "$IPADDRs"
for ip in $IPADDRs; do
draw_dotted_line "-" $((TERM_DWITH / 2))
outln
NODEIP="$ip"
lets_roll "${STARTTLS_PROTOCOL}"
ret=$(($? + ret))
done
draw_dotted_line "-" $((TERM_DWITH / 2))
outln
pr_bold "Done testing now all IP addresses (on port $PORT): "; outln "$IPADDRs"
else # we need just one ip4v to check
NODEIP="$IPADDRs"
lets_roll "${STARTTLS_PROTOCOL}"
ret=$?
fi
fi
fi
exit $?
# $Id: testssl.sh,v 1.379B 2015/09/25 12:35:41 dirkw Exp $
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