/usr/share/w3af/plugins/grep/httpAuthDetect.py is in w3af-console 1.1svn5547-1.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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httpAuthDetect.py
Copyright 2006 Andres Riancho
This file is part of w3af, w3af.sourceforge.net .
w3af is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation version 2 of the License.
w3af is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with w3af; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
'''
import re
import core.controllers.outputManager as om
from core.controllers.w3afException import w3afException
# options
from core.data.options.option import option
from core.data.options.optionList import optionList
from core.controllers.basePlugin.baseGrepPlugin import baseGrepPlugin
import core.data.kb.knowledgeBase as kb
import core.data.kb.info as info
import core.data.kb.vuln as vuln
import core.data.constants.severity as severity
import core.data.parsers.dpCache as dpCache
class httpAuthDetect(baseGrepPlugin):
'''
Find responses that indicate that the resource requires auth.
@author: Andres Riancho ( andres.riancho@gmail.com )
'''
def __init__(self):
baseGrepPlugin.__init__(self)
self._auth_uri_regex = re.compile('.*://[\w%]*?:[\w%]*?@[\w\.]{3,40}')
def grep(self, request, response):
'''
Verify if I find 401 or authentication URIs like http://user:pass@domain.com/
@parameter request: The HTTP request object.
@parameter response: The HTTP response object
@return: None
Init
>>> from core.data.url.httpResponse import httpResponse
>>> from core.data.request.fuzzableRequest import fuzzableRequest
>>> from core.data.parsers.urlParser import url_object
>>> from core.controllers.coreHelpers.fingerprint_404 import fingerprint_404_singleton
>>> f = fingerprint_404_singleton( [False, False, False] )
Simple test, empty string.
>>> body = ''
>>> url = url_object('http://www.w3af.com/')
>>> headers = {'content-type': 'text/html'}
>>> response = httpResponse(200, body , headers, url, url)
>>> request = fuzzableRequest(url, method='GET')
>>> h = httpAuthDetect()
>>> h.grep(request, response)
>>> len(kb.kb.getData('httpAuthDetect', 'auth'))
0
>>> len(kb.kb.getData('httpAuthDetect', 'userPassUri'))
0
One long string
>>> body = 'ABC ' * 10000
>>> url = url_object('http://www.w3af.com/')
>>> headers = {'content-type': 'text/html'}
>>> response = httpResponse(200, body , headers, url, url)
>>> request = fuzzableRequest(url, method='GET')
>>> h = httpAuthDetect()
>>> h.grep(request, response)
>>> len(kb.kb.getData('httpAuthDetect', 'auth'))
0
>>> len(kb.kb.getData('httpAuthDetect', 'userPassUri'))
0
Something interesting to match
>>> body = 'ABC ' * 100
>>> body += 'http://abc:def@www.w3af.com/foo.bar'
>>> body += '</br> ' * 50
>>> url = url_object('http://www.w3af.com/')
>>> headers = {'content-type': 'text/html'}
>>> response = httpResponse(200, body , headers, url, url)
>>> request = fuzzableRequest(url, method='GET')
>>> h = httpAuthDetect()
>>> h.grep(request, response)
>>> len(kb.kb.getData('httpAuthDetect', 'auth'))
0
>>> len(kb.kb.getData('httpAuthDetect', 'userPassUri'))
1
Something interesting to match
>>> kb.kb.cleanup()
>>> body = ''
>>> url = url_object('http://www.w3af.com/')
>>> headers = {'content-type': 'text/html'}
>>> response = httpResponse(401, body , headers, url, url)
>>> request = fuzzableRequest(url, method='GET')
>>> h = httpAuthDetect()
>>> h.grep(request, response)
>>> len(kb.kb.getData('httpAuthDetect', 'non_rfc_auth'))
1
>>> len(kb.kb.getData('httpAuthDetect', 'userPassUri'))
0
Something interesting to match
>>> kb.kb.cleanup()
>>> body = ''
>>> url = url_object('http://www.w3af.com/')
>>> headers = {'content-type': 'text/html', 'www-authenticate': 'realm-w3af'}
>>> response = httpResponse(401, body , headers, url, url)
>>> request = fuzzableRequest(url, method='GET')
>>> h = httpAuthDetect()
>>> h.grep(request, response)
>>> len(kb.kb.getData('httpAuthDetect', 'auth'))
1
>>> len(kb.kb.getData('httpAuthDetect', 'userPassUri'))
0
'''
# If I have a 401 code, and this URL wasn't already reported...
if response.getCode() == 401:
# Doing this after the other if in order to be faster.
already_reported = [i.getURL().getDomainPath() for i in \
kb.kb.getData('httpAuthDetect', 'auth')]
if response.getURL().getDomainPath() not in already_reported:
# Perform all the work in this method
self._analyze_401(response)
else:
# I get here for "normal" HTTP 200 responses
self._find_auth_uri(response)
def _find_auth_uri(self, response):
'''
Analyze a 200 response and report any findings of http://user:pass@domain.com/
@return: None
'''
#
# Analyze the HTTP URL
#
if ('@' in response.getURI() and
self._auth_uri_regex.match(response.getURI().url_string)):
# An authentication URI was found!
v = vuln.vuln()
v.setPluginName(self.getName())
v.setURL(response.getURL())
v.setId(response.id)
desc = 'The resource: "%s" has a user and password in ' \
'the URI.' % response.getURI()
v.setDesc(desc)
v.setSeverity(severity.HIGH)
v.setName('Basic HTTP credentials')
v.addToHighlight( response.getURI().url_string )
kb.kb.append(self, 'userPassUri', v)
om.out.vulnerability(v.getDesc(), severity=v.getSeverity())
#
# Analyze the HTTP response body
#
url_list = []
try:
documentParser = dpCache.dpc.getDocumentParserFor(response)
except w3afException, w3:
msg = 'Failed to find a suitable document parser. ' \
'Exception: ' + str(w3)
om.out.debug(msg)
else:
parsed_references, re_references = documentParser.getReferences()
url_list.extend(parsed_references)
url_list.extend(re_references)
for url in url_list:
if ('@' in url.url_string and
self._auth_uri_regex.match(url.url_string)):
v = vuln.vuln()
v.setPluginName(self.getName())
v.setURL(response.getURL())
v.setId( response.id )
msg = 'The resource: "'+ response.getURL() + '" has a user and password in the'
msg += ' body. The offending URL is: "' + url + '".'
v.setDesc(msg)
v.setSeverity(severity.HIGH)
v.setName('Basic HTTP credentials')
v.addToHighlight( url.url_string )
kb.kb.append(self, 'userPassUri', v)
om.out.vulnerability(v.getDesc(), severity=v.getSeverity())
def _analyze_401(self, response):
'''
Analyze a 401 response and report it.
@return: None
'''
# Get the realm
realm = None
for key in response.getHeaders():
if key.lower() == 'www-authenticate':
realm = response.getHeaders()[ key ]
break
if realm is None:
# Report this strange case
i = info.info()
i.setPluginName(self.getName())
i.setName('Authentication without www-authenticate header')
i.setURL( response.getURL() )
i.setId( response.id )
i.setDesc( 'The resource: "'+ response.getURL() + '" requires authentication ' +
'(HTTP Code 401) but the www-authenticate header is not present. This requires ' +
'human verification.')
kb.kb.append( self , 'non_rfc_auth' , i )
else:
# Report the common case, were a realm is set.
i = info.info()
i.setPluginName(self.getName())
if 'ntlm' in realm.lower():
i.setName('NTLM authentication')
else:
i.setName('HTTP Basic authentication')
i.setURL( response.getURL() )
i.setId( response.id )
i.setDesc( 'The resource: "'+ response.getURL() + '" requires authentication.' +
' The realm is: "' + realm + '".')
i['message'] = realm
i.addToHighlight( realm )
kb.kb.append( self , 'auth' , i )
om.out.information( i.getDesc() )
def setOptions( self, OptionList ):
pass
def getOptions( self ):
'''
@return: A list of option objects for this plugin.
'''
ol = optionList()
return ol
def getPluginDeps( self ):
'''
@return: A list with the names of the plugins that should be run before the
current one.
'''
return []
def getLongDesc( self ):
'''
@return: A DETAILED description of the plugin functions and features.
'''
return '''
This plugin greps every page and finds responses that indicate that the
resource requires authentication.
'''
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