/usr/share/w3af/plugins/audit/dav.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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dav.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 core.controllers.outputManager as om
# options
from core.data.options.option import option
from core.data.options.optionList import optionList
from core.controllers.basePlugin.baseAuditPlugin import baseAuditPlugin
import core.data.kb.knowledgeBase as kb
import core.data.kb.vuln as vuln
import core.data.kb.info as info
import core.data.constants.severity as severity
from core.data.parsers.urlParser import url_object
from core.data.bloomfilter.bloomfilter import scalable_bloomfilter
from core.controllers.coreHelpers.fingerprint_404 import is_404
from core.controllers.w3afException import w3afException
from core.data.fuzzer.fuzzer import createRandAlpha, createRandAlNum
class dav(baseAuditPlugin):
'''
Verify if the WebDAV module is properly configured.
@author: Andres Riancho ( andres.riancho@gmail.com )
'''
def __init__(self):
baseAuditPlugin.__init__(self)
# Internal variables
self._already_tested_dirs = scalable_bloomfilter()
def audit(self, freq ):
'''
Searches for file upload vulns using PUT method.
@param freq: A fuzzableRequest
'''
# Start
domain_path = freq.getURL().getDomainPath()
if domain_path not in self._already_tested_dirs:
om.out.debug( 'dav plugin is testing: ' + freq.getURL() )
self._already_tested_dirs.add( domain_path )
self._PUT( domain_path )
self._PROPFIND( domain_path )
self._SEARCH( domain_path )
def _SEARCH( self, domain_path ):
'''
Test SEARCH method.
'''
content = "<?xml version='1.0'?>\r\n"
content += "<g:searchrequest xmlns:g='DAV:'>\r\n"
content += "<g:sql>\r\n"
content += "Select 'DAV:displayname' from scope()\r\n"
content += "</g:sql>\r\n"
content += "</g:searchrequest>\r\n"
res = self._uri_opener.SEARCH( domain_path , data=content )
content_matches = '<a:response>' in res or '<a:status>' in res or 'xmlns:a="DAV:"' in res
if content_matches and res.getCode() in xrange(200, 300):
v = vuln.vuln()
v.setPluginName(self.getName())
v.setURL( res.getURL() )
v.setId( res.id )
v.setSeverity(severity.MEDIUM)
v.setName( 'Insecure DAV configuration' )
v.setMethod( 'SEARCH' )
msg = 'Directory listing with HTTP SEARCH method was found at directory: "'
msg += domain_path + '"'
v.setDesc( msg )
kb.kb.append( self, 'dav', v )
def _PROPFIND( self, domain_path ):
'''
Test PROPFIND method
'''
content = "<?xml version='1.0'?>\r\n"
content += "<a:propfind xmlns:a='DAV:'>\r\n"
content += "<a:prop>\r\n"
content += "<a:displayname:/>\r\n"
content += "</a:prop>\r\n"
content += "</a:propfind>\r\n"
res = self._uri_opener.PROPFIND( domain_path , data=content, headers={'Depth': '1'} )
# Remember that httpResponse objects have a faster "__in__" than
# the one in strings; so string in response.getBody() is slower than
# string in response
if "D:href" in res and res.getCode() in xrange(200, 300):
v = vuln.vuln()
v.setPluginName(self.getName())
v.setURL( res.getURL() )
v.setId( res.id )
v.setSeverity(severity.MEDIUM)
v.setName( 'Insecure DAV configuration' )
v.setMethod( 'PROPFIND' )
msg = 'Directory listing with HTTP PROPFIND method was found at directory: "'
msg += domain_path + '"'
v.setDesc( msg )
kb.kb.append( self, 'dav', v )
def _PUT( self, domain_path ):
'''
Tests PUT method.
'''
# upload
url = domain_path.urlJoin( createRandAlpha( 5 ) )
rndContent = createRandAlNum(6)
put_response = self._uri_opener.PUT( url , data=rndContent )
# check if uploaded
res = self._uri_opener.GET( url , cache=True )
if res.getBody() == rndContent:
v = vuln.vuln()
v.setPluginName(self.getName())
v.setURL( url )
v.setId( [put_response.id, res.id] )
v.setSeverity(severity.HIGH)
v.setName( 'Insecure DAV configuration' )
v.setMethod( 'PUT' )
msg = 'File upload with HTTP PUT method was found at resource: "' + domain_path + '".'
msg += ' A test file was uploaded to: "' + res.getURL() + '".'
v.setDesc( msg )
kb.kb.append( self, 'dav', v )
# Report some common errors
elif put_response.getCode() == 500:
i = info.info()
i.setPluginName(self.getName())
i.setURL( url )
i.setId( res.id )
i.setName( 'DAV incorrect configuration' )
i.setMethod( 'PUT' )
msg = 'DAV seems to be incorrectly configured. The web server answered with a 500'
msg += ' error code. In most cases, this means that the DAV extension failed in'
msg += ' some way. This error was found at: "' + put_response.getURL() + '".'
i.setDesc( msg )
kb.kb.append( self, 'dav', i )
# Report some common errors
elif put_response.getCode() == 403:
i = info.info()
i.setPluginName(self.getName())
i.setURL( url )
i.setId( [put_response.id, res.id] )
i.setName( 'DAV insufficient privileges' )
i.setMethod( 'PUT' )
msg = 'DAV seems to be correctly configured and allowing you to use the PUT method'
msg +=' but the directory does not have the correct permissions that would allow'
msg += ' the web server to write to it. This error was found at: "'
msg += put_response.getURL() + '".'
i.setDesc( msg )
kb.kb.append( self, 'dav', i )
def end(self):
'''
This method is called when the plugin wont be used anymore.
'''
self.printUniq( kb.kb.getData( 'dav', 'dav' ), 'VAR' )
def getOptions( self ):
'''
@return: A list of option objects for this plugin.
'''
ol = optionList()
return ol
def setOptions( self, optionMap ):
'''
This method sets all the options that are configured using the user interface
generated by the framework using the result of getOptions().
@parameter OptionList: A dictionary with the options for the plugin.
@return: No value is returned.
'''
pass
def getPluginDeps( self ):
'''
@return: A list with the names of the plugins that should be run before the
current one.
'''
return ['discovery.allowedMethods', 'discovery.serverHeader']
def getLongDesc( self ):
'''
@return: A DETAILED description of the plugin functions and features.
'''
return '''
This plugin finds WebDAV configuration errors. These errors are generally server configuration errors rather
than a web application errors. To check for vulnerabilities of this kind, the plugin will try to PUT a file on a directory
that has WebDAV enabled, if the file is uploaded successfully, then we have found a bug.
'''
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