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1) #!/usr/bin/python -tO
2) 
3) # freewvs 0.1 - the free web vulnerability scanner
4) #
5) # http://source.schokokeks.org/freewvs/
6) #
7) # Copyright 2007 Hanno Boeck, schokokeks.org <hanno@schokokeks.org>
8) #
9) # Contributions by
10) # Fabian Fingerle <fabian@datensalat.eu>
11) #
12) # This program is free software: you can redistribute it and/or modify
13) # it under the terms of the GNU General Public License as published by
14) # the Free Software Foundation, either version 3 of the License, or
15) # (at your option) any later version.
16) #
17) # This program is distributed in the hope that it will be useful,
18) # but WITHOUT ANY WARRANTY; without even the implied warranty of
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19) # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.    See the
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20) # GNU General Public License for more details.
21) #
22) # You should have received a copy of the GNU General Public License
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23) # along with this program.    If not, see <http://www.gnu.org/licenses/>.
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24) 
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25) import ConfigParser, os, glob, pprint, re, optparse, sys, gettext
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26) 
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27) gettext.textdomain('freewvs')
28) _ = gettext.gettext
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29) 
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30) def versioncompare(safe_version, find_version):
31)     if safe_version == [""]:
32)         return True
33)     for i in range(min(len(find_version), len(safe_version))):
34)         if int(find_version[i])<int(safe_version[i]):
35)             return True
36)         if int(find_version[i])>int(safe_version[i]):
37)             return False
38)     return (len(find_version)<len(safe_version))
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39) 
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40) def vulnprint(appname, version, safeversion, vuln, vfilename, subdir, style = None):
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41)     appdir = '/'.join(os.path.abspath(vfilename).split('/')[:-1-subdir])
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42)     if not style:
43)         print "%(appname)s %(version)s (%(safeversion)s) %(vuln)s %(appdir)s" \
44)               % vars()
45)     elif style=='fancy':
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46)         print _("Directory: %(appdir)s") % vars()
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47)         if safeversion!="ok":
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48)             if safeversion!="":
49)                 print _("Vulnerable %(appname)s %(version)s found, please update to " \
50)                         "%(safeversion)s or above.") % vars()
51)             else:
52)                 print _("Vulnerable %(appname)s %(version)s found, no fixed version available." \
53)                         ) % vars()
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54)             if vuln[:3] == "CVE":
55)                 print _("http://cve.mitre.org/cgi-bin/cvename.cgi?name=%(vuln)s") \
56)                         % vars()
57)             else:
58)                 print (vuln)
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59)         else:
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60)             print _("%(appname)s %(version)s found." ) % vars()
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61)         print
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62)     elif style=='xml':
63)         state = 'vulnerable'
64)         if safeversion == 'ok':
65)             state = 'ok'
66)         print '  <app state="%s">' % state
67)         print '    <appname>%s</appname>' % appname
68)         print '    <version>%s</version>' % version
69)         print '    <directory>%s</directory>' % appdir
70)         if state == 'vulnerable':
71)             print '    <safeversion>%s</safeversion>' % safeversion
72)             print '    <vulninfo>%s</vulninfo>' % vuln
73)         print '  </app>'
74) 
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75) 
76) pp = pprint.PrettyPrinter(indent=4)
77) 
78) # Command-line options
79) parser = optparse.OptionParser()
80) parser.add_option("-a", "--all", action="store_true", dest="ALL",
81)                   help="Show all webapps found, not just vulnerable")
82) parser.add_option("-d", "--debug", action="store_true", dest="DEBUG",
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83)                   help="Show lots of debugging output, mainly useful"+ \
84)                   "for development")
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85) parser.add_option("-f", "--fancy", action="store_const", dest="OUTPUT", const="fancy",
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86)                   help="Show more fancy output")
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87) parser.add_option("-x", "--xml", action="store_const", dest="OUTPUT", const="xml",
88)                   help="Output results as XML")
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89) opts, args = parser.parse_args()
90) 
91) # Parse vulnerability database
92) config = ConfigParser.ConfigParser()
93) config.read(glob.glob('/usr/share/freewvs/*.freewvs'))
94) config.read(glob.glob('/usr/local/share/freewvs/*.freewvs'))
95) config.read(glob.glob(os.path.dirname(sys.argv[0])+'/freewvsdb/*.freewvs'))
96) 
97) vdb = []
98) for sect in config.sections():
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99)     item = {}
100) 
101)     # base options
102)     item['name'] = sect
103)     item['safe'] = config.get(sect, 'safe')
104)     item['file'] = config.get(sect, 'file')
105)     item['vuln'] = config.get(sect, 'vuln')
106)     item['subdir'] = int(config.get(sect, 'subdir'))
107) 
108)     # match magic
109)     item['variable'] = []
110)     for var in config.get(sect,'variable').split(","):
111)         item['variable'].append(re.compile(re.escape(var)+
112)                                 r"[^0-9.]*[.]*([0-9.]*[0-9])[^0-9.]"))
113) 
114)     # optional options
115)     if config.has_option(sect,'extra_match'):
116)         item['extra_match'] = config.get(sect,'extra_match')
117)     else:
118)         item['extra_match'] = False
119)     if config.has_option(sect,'add_minor'):
120)         item['add_minor'] = config.get(sect,'add_minor')
121)     else:
122)         item['add_minor'] = False
123)     if config.has_option(sect,'old_safe'):
124)         item['old_safe'] = config.get(sect,'old_safe').split(",")
125)     else:
126)         item['old_safe'] = []
127) 
128)     vdb.append(item)
129) if opts.DEBUG:
130)     pp.pprint(vdb)
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131) 
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132) if opts.OUTPUT == 'xml':
133)   print '<?xml version="1.0" ?>'
134)   print '<freewvs>'
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135) 
136) # start the search
137) 
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138) for fdir in args:
139)     for root, NULL, files in os.walk(fdir):
140)         for filename in files:
141)             for item in vdb:
142)                 if filename == item['file']:
143)                     mfile = os.path.join(root, filename)
144)                     file = open(mfile)
145)                     filestr = file.read()
146)                     file.close()
147) 
148)                     if item['extra_match']:
149)                         ematch = (filestr.find(item['extra_match']) != -1)
150)                     else:
151)                         ematch = True
152) 
153)                     findversion = []
154)                     for var in item['variable']:
155)                         var = var.search(filestr)
156)                         if not var:
157)                             findversion = False
158)                             break
159)                         else:
160)                             findversion.append(var.group(1))
161) 
162)                     if findversion and ematch:
163)                         findversion = '.'.join(findversion)
164) 
165)                         # Very ugly phpbb workaround
166)                         if item['add_minor']:
167)                             findversion = findversion.split('.')
168)                             findversion[-1] = str(int(findversion[-1])+
169)                                             int(item['add_minor']))
170)                             findversion = '.'.join(findversion)
171) 
172)                         if not (versioncompare(item['safe'].split('.'), \
173)                                 findversion.split('.'))) or \
174)                                 item['old_safe'].count(findversion)>0:
175)                             if opts.ALL:
176)                                 if opts.DEBUG:
177)                                     print "File "+mfile
178)                                 vulnprint(item['name'], findversion, \
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179)                                           "ok", "", mfile, item['subdir'], \
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180)                                           opts.OUTPUT)
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181)                         else:
182)                             if opts.DEBUG:
183)                                 print "File "+mfile
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184)                             safev="9999"
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185)                             for ver in item['old_safe']:
186)                                 if (versioncompare(ver.split('.'), \
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187)                                     findversion.split('.') ) and \
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188)                                     not versioncompare(ver.split('.'), \
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189)                                     safev.split('.')) ):
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190)                                     safev=ver
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191)                             if safev=="9999":
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192)                                 safev=item['safe']
193) 
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194)                             vulnprint (item['name'], findversion, \
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195)                                        safev, item['vuln'], \
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196)                                        mfile, item['subdir'], opts.OUTPUT)
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197) 
198)                     else:
199)                         if opts.DEBUG:
200)                             print "regexp failed for " + \
201)                                   item['name'] + " on " + mfile