/usr/share/w3af/plugins/discovery/serverHeader.py is in w3af-console 1.0-rc3svn3489-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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serverHeader.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.baseDiscoveryPlugin import baseDiscoveryPlugin
from core.controllers.w3afException import w3afRunOnce
import core.data.kb.knowledgeBase as kb
import core.data.kb.info as info
class serverHeader(baseDiscoveryPlugin):
'''
Identify the server type based on the server header.
@author: Andres Riancho ( andres.riancho@gmail.com )
'''
def __init__(self):
baseDiscoveryPlugin.__init__(self)
# Internal variables
self._exec = True
self._x_powered = True
# User configured variables
self._exec_one_time = True
def discover(self, fuzzableRequest ):
'''
Nothing strange, just do a GET request to the url and save the server headers
to the kb. A smarter way to check the server type is with the hmap plugin.
@parameter fuzzableRequest: A fuzzableRequest instance that contains
(among other things) the URL to test.
'''
if not self._exec:
# This will remove the plugin from the discovery plugins to be runned.
raise w3afRunOnce()
else:
try:
response = self._urlOpener.GET( fuzzableRequest.getURL(), useCache=True )
except KeyboardInterrupt,e:
raise e
else:
server = ''
for h in response.getHeaders().keys():
if h.lower() == 'server':
server = response.getHeaders()[h]
break
if server != '':
i = info.info()
i.setName('Server header')
i.setId( response.getId() )
i.setDesc('The server header for the remote web server is: "' + server + '".' )
i['server'] = server
om.out.information( i.getDesc() )
i.addToHighlight( h + ':' )
# Save the results in the KB so the user can look at it
kb.kb.append( self, 'server', i )
# Also save this for easy internal use
# other plugins can use this information
kb.kb.save( self , 'serverString' , server )
else:
# strange !
i = info.info()
i.setName('Omited server header')
i.setId( response.getId() )
msg = 'The remote HTTP Server ommited the "server" header in it\'s response.'
i.setDesc( msg )
om.out.information( i.getDesc() )
# Save the results in the KB so that other plugins can use this information
kb.kb.append( self, 'omitedHeader', i )
if self._exec_one_time:
self._exec = False
if self._x_powered:
self._check_x_power( fuzzableRequest )
return []
def _check_x_power( self, fuzzableRequest ):
'''
Analyze X-Powered-By header.
'''
try:
response = self._urlOpener.GET( fuzzableRequest.getURL(), useCache=True )
except:
pass
else:
powered_by = ''
for header_name in response.getHeaders().keys():
for i in [ 'ASPNET', 'POWERED']:
if i in header_name.upper() or header_name.upper() in i:
powered_by = response.getHeaders()[header_name]
i = info.info()
i.setName('Powered by header')
i.setId( response.getId() )
msg = '"' + header_name + '" header for this HTTP server is: "'
msg += powered_by + '".'
i.setDesc( msg )
i['poweredBy'] = powered_by
om.out.information( i.getDesc() )
i.addToHighlight( header_name + ':' )
# Save the results in the KB so that other plugins can use this information
# Before knowing that some servers may return more than one poweredby
# header I had:
# - kb.kb.save( self , 'poweredBy' , poweredBy )
# But I have seen an IIS server with PHP that returns both the ASP.NET and
# the PHP headers
powered_by_in_kb = [ j['poweredBy'] for j in kb.kb.getData( 'serverHeader', 'poweredBy' ) ]
if powered_by not in powered_by_in_kb:
kb.kb.append( self , 'poweredBy' , i )
# Also save this for easy internal use
kb.kb.append( self , 'poweredByString' , powered_by )
if self._exec_one_time:
self._x_powered = False
# not as strange as the one above, this is because of a config or simply
# cause I requested a static "html" file.
if powered_by == '':
# I will save the server header as the poweredBy, its the best choice I have
# right now
if kb.kb.getData( 'serverHeader' , 'serverString' ) not in \
kb.kb.getData( 'serverHeader', 'poweredByString' ):
kb.kb.append( self , 'poweredByString' , \
kb.kb.getData( 'serverHeader' , 'serverString' ) )
def getOptions( self ):
'''
@return: A list of option objects for this plugin.
'''
d1 = 'Execute plugin only one time'
h1 = 'Generally the server header wont change during a scan to a same site, so executing'
h1 += ' this plugin only one time is a safe choice.'
o1 = option('execOneTime', self._exec_one_time, d1, 'boolean', help=h1)
ol = optionList()
ol.add(o1)
return ol
def setOptions( self, optionsMap ):
'''
This method sets all the options that are configured using the user interface
generated by the framework using the result of getOptions().
@parameter optionsMap: A dictionary with the options for the plugin.
@return: No value is returned.
'''
self._exec_one_time = optionsMap['execOneTime'].getValue()
def getPluginDeps( self ):
'''
@return: A list with the names of the plugins that should be runned before the
current one.
'''
return []
def getLongDesc( self ):
'''
@return: A DETAILED description of the plugin functions and features.
'''
return '''
This plugin GETs the server header and saves the result to the knowledge base.
Nothing strange, just do a GET request to the url and save the server headers
to the kb. A smarter way to check the server type is with the hmap plugin.
'''
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