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<?php namespace WBCR\Titan; // Exit if accessed directly if ( ! defined( 'ABSPATH' ) ) { exit; } use WBCR\Titan\Cert\Cert; use WBCR\Titan\Client\Client; use WBCR\Titan\Client\Request\SetNoticeData; /** * Security audit class * * @author Artem Prihodko <webtemyk@ya.ru> * @copyright (c) 2020 Creative Motion * @version 1.0 */ class Audit extends Module_Base { /** * @see self::app() * @var Audit */ private static $app; /** * @var AuditResult[] */ public $results = array(); /** * @var Client */ public $client; /** * Audit constructor. * */ public function __construct() { parent::__construct(); self::$app = $this; $this->module_dir = WTITAN_PLUGIN_DIR . "/includes/audit"; $this->module_url = WTITAN_PLUGIN_URL . "/includes/audit"; add_action( 'wp_ajax_wtitan_audit_all', array( $this, 'show_audit_all' ) ); //AUDIT $this->get_audit(); } /** * @return Audit * @since 7.0 */ public static function app() { return self::$app; } /** * Get audit * * @return AuditResult[]|bool Results */ public function get_audit() { $this->results = get_option( $this->plugin->getPrefix() . "audit_results", false ); if ( $this->results === false ) { return false; } if ( ! is_array( $this->results ) ) { $this->results = array(); } return $this->results; } /** * Get hided * * @return AuditResult[] Results */ public function get_hided() { $results = get_option( $this->plugin->getPrefix() . "audit_results_hided", array() ); if ( ! is_array( $results ) ) { $results = array(); } return $results; } /** * Do audit * * @return AuditResult[] Results */ public function do_audit() { $this->results = array(); $this->check_versions(); $this->check_wpconfig(); $this->check_php_variables(); $this->check_https(); $this->check_users(); $this->check_updates(); $this->check_files(); $this->check_fileEditor(); $this->check_folders_access(); $this->check_self(); update_option( $this->plugin->getPrefix() . "audit_results_hided", array(), 'no' ); update_option( $this->plugin->getPrefix() . "audit_results", $this->results, 'no' ); return $this->results; } /** * Add result * * @param string $title * @param string $description * @param string $severity * @param bool $hided */ public function add( $title, $description, $severity, $fix = '', $hided = false ) { $this->results[] = new AuditResult( $title, $description, $severity, $fix, $hided ); } /** * Versions audit * * @return AuditResult[] Results */ public function check_versions() { //PHP $title = sprintf( __( 'Your PHP version %1s is less than the recommended %2s', 'titan-security' ), PHP_VERSION, '7.2.0' ); $description = __( 'Older versions of PHP are slow and vulnerable', 'titan-security' ); if ( version_compare( PHP_VERSION, '7.2.0' ) < 0 ) { $this->add( $title, $description, 'medium' ); } //MySQL global $wpdb; $title = sprintf( __( 'Your MySQL version %1s is less than the recommended %2s', 'titan-security' ), $wpdb->db_version(), '4.0.0' ); $description = __( 'Older versions of MySQL are very slow and vulnerable', 'titan-security' ); if ( version_compare( $wpdb->db_version(), '4.0.0' ) < 0 ) { $this->add( $title, $description, 'medium' ); } //Wordpress global $wp_version; $title = sprintf( __( 'Your Wordpress version %1s is less than the recommended %2s', 'titan-security' ), $wp_version, '5.2.0' ); $description = __( 'Older versions of Wordpress may be vulnerable', 'titan-security' ); if ( version_compare( $wp_version, '5.2.0' ) < 0 ) { $this->add( $title, $description, 'medium', admin_url( 'update-core.php' ) ); } return $this->results; } /** * Debug audit * * @return AuditResult[] Results */ public function check_wpconfig() { //WP_DEBUG $title = __( 'Wordpress Debug mode is enabled on your site', 'titan-security' ); $description = __( 'Every good developer should enable debugging before starting work on a new plugin or theme. In fact, WordPress Codex "strongly recommends" that developers use WP_DEBUG. Unfortunately, many developers forget to disable debugging mode even when the site is running. Displaying debug logs in the web interface will allow hackers to learn a lot about your WordPress website.', 'titan-security' ); if ( ( defined( 'WP_DEBUG' ) && WP_DEBUG ) ) { $this->add( $title, $description, 'high' ); } //SAVEQUERIES $title = __( 'Wordpress Database Debug mode is enabled on your site', 'titan-security' ); $description = __( 'When its enabled, all SQL queries will be saved in the $wpdb->queries variable as an array. For security and performance reasons, this constant must be disabled on the production site.', 'titan-security' ); if ( ( defined( 'SAVEQUERIES' ) && SAVEQUERIES ) ) { $this->add( $title, $description, 'low' ); } //SCRIPT_DEBUG $title = __( 'Wordpress Script Debug Mode is enabled on your site', 'titan-security' ); $description = __( 'When enabled, WordPress will use non-compressed versions (dev versions) of JS and CSS files . The default is to use min versions of the files. For security and performance reasons, this constant must be disabled on the production site.', 'titan-security' ); if ( ( defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ) ) { $this->add( $title, $description, 'low' ); } //$table_prefix $title = __( "Database table prefix is empty or has a default value: 'wp_'", 'titan-security' ); $description = __( "This allows hackers to plan a massive attack based on the default prefix 'wp_'", 'titan-security' ); global $wpdb; if ( empty( $wpdb->prefix ) || 'wp_' == $wpdb->prefix || WTITAN_DEBUG ) { $this->add( $title, $description, 'medium', \WBCR\Titan\Plugin::app()->getPluginPageUrl( 'check', [ 'action' => 'fix-database-prefix' ] ) ); } //SALT/KEYS $title = __( 'Authentication Unique Keys and Salts are not set in wp-config.php file', 'titan-security' ); $description = __( "You can generate these using the <a href='https://api.wordpress.org/secret-key/1.1/salt/'>WordPress.org secret-key service</a>", 'titan-security' ); if ( ( ! defined( 'AUTH_KEY' ) || empty( AUTH_KEY ) ) || ( ! defined( 'SECURE_AUTH_KEY' ) || empty( SECURE_AUTH_KEY ) ) || ( ! defined( 'LOGGED_IN_KEY' ) || empty( LOGGED_IN_KEY ) ) || ( ! defined( 'NONCE_KEY' ) || empty( NONCE_KEY ) ) || ( ! defined( 'AUTH_SALT' ) || empty( AUTH_SALT ) ) || ( ! defined( 'SECURE_AUTH_SALT' ) || empty( SECURE_AUTH_SALT ) ) || ( ! defined( 'LOGGED_IN_SALT' ) || empty( LOGGED_IN_SALT ) ) || ( ! defined( 'NONCE_SALT' ) || empty( NONCE_SALT ) ) ) { $this->add( $title, $description, 'low' ); } return $this->results; } /** * PHP variables audit * * @return AuditResult[] Results */ public function check_php_variables() { //display_errors $title = __( "The 'display_errors' PHP directive is enabled", "titan-security" ); $description = __( "Displaying any debugging information in the interface can be extremely bad for site security. If any PHP errors occur on your site , they must be registered in a secure location and not displayed to visitors or potential attackers.", "titan-security" ); if ( ini_get( 'display_errors' ) ) { $this->add( $title, $description, 'high' ); } //allow_url_include $title = __( "The 'allow_url_include' PHP directive is enabled", "titan-security" ); $description = __( "Enabling 'allow_url_include' PHP Directive will make your site vulnerable to cross-site attacks (XSS).", "titan-security" ); if ( ini_get( 'allow_url_include' ) ) { $this->add( $title, $description, 'high' ); } //expose_php $title = __( "The 'expose_php' PHP directive outputs the PHP version", "titan-security" ); $description = __( "Enabling 'expose_php' PHP Directive exposes to the world that PHP is installed on the server, which includes the PHP version within the HTTP header.", "titan-security" ); if ( ini_get( 'expose_php' ) ) { $this->add( $title, $description, 'low' ); } return $this->results; } /** * HTTPS audit * * @return AuditResult[] Results */ public function check_https() { $title = __( "Problems with the SSL certificate were detected on your site", "titan-security" ); $description = ""; $securedUrl = get_site_url( null, '', 'https' ); $cert = Cert::get_instance(); if ( $cert->is_available() ) { if ( ! $cert->is_lets_encrypt() ) { $description = __( "The SSL certificate ends ", "titan-security" ) . date( 'd-m-Y H:i:s', $cert->get_expiration_timestamp() ); } } else { switch ( $cert->get_error() ) { case Cert::ERROR_UNAVAILABLE: $description = __( "No openssl extension for php", "titan-security" ); break; case Cert::ERROR_ONLY_HTTPS: $description = sprintf( __( "Available only on <a href='%1s'>%2s</a>", "titan-security" ), $securedUrl, $securedUrl ); break; case Cert::ERROR_HTTPS_UNAVAILABLE: $description = __( "HTTPS is not available on this site", "titan-security" ); break; case Cert::ERROR_UNKNOWN_ERROR: $description = __( "Unknown error", "titan-security" ); break; default: $description = __( "Error", "titan-security" ); break; } } $this->add( $title, $description, 'medium' ); return $this->results; } /** * Users audit * Check if an user can be found by its ID * * @return AuditResult[] Results */ public function check_users() { $users = get_users( [ 'role' => 'administrator', ] ); $admin = false; foreach ( $users as $user ) { if ( "admin" == $user->user_login || "administrator" == $user->user_login ) { $admin = true; } } $title = __( "The standard administrator login 'admin' is used", "titan-security" ); $description = __( "Since user names make up half of the login credentials, this made it easier for hackers to launch brute- force attacks. You need to set complex and unique names for your site administrators.", "titan-security" ); if ( $admin ) { $this->add( $title, $description, 'medium' ); } //User ID $title = __( "Author URL by ID access", "titan-security" ); $description = __( "By knowing the username, you are one step closer to logging in using the username to brute-force the password, or to gain access in a similar way.", "titan-security" ); $users = get_users( 'number=5' ); $url = home_url() . '/?author='; foreach ( $users as $user ) { $response = wp_remote_get( $url . $user->ID, array( 'redirection' => 0, 'sslverify' => 0 ) ); $response_code = wp_remote_retrieve_response_code( $response ); if ( $response_code == 301 ) { $this->add( $title, $description, 'medium' ); break; } } return $this->results; } /** * Updates audit * * @return AuditResult[] Results */ public function check_updates() { $plugins = get_plugins(); //COMPATIBLE $no_requirement = array(); foreach ( (array) $plugins as $plugin_file => $plugin_data ) { $requirement = validate_plugin_requirements( $plugin_file ); if ( is_wp_error( $requirement ) ) { $no_requirement[] = $plugin_data['Name']; } } $title = __( "Incompatible plugins found", "titan-security" ); $description = "<b>" . __( "Some plugins on your site are not compatible with PHP and Wordpress versions: ", "titan-security" ) . "</b>"; if ( ! empty( $no_requirement ) ) { $description .= "<br>- " . implode( "<br>- ", $no_requirement ); $this->add( $title, $description, 'medium' ); } //UPDATE Plugins $current = get_site_transient( 'update_plugins' ); foreach ( (array) $current->response as $plugin_file => $plugin_data ) { $plugins_update[] = $plugin_data->slug; } $i = 0; foreach ( (array) $plugins as $plugin_file => $plugin_data ) { if ( isset( $current->response[ $plugin_file ] ) ) { $plugins[ $plugin_file ]['update'] = true; $i ++; } } $title = sprintf( __( 'You have %1s plugins that need to be updated', 'titan-security' ), $i ); $description = "<b>" . __( "Need to update plugins, as previous versions may be vulnerable:", "titan-security" ) . "</b>"; if ( ! empty( $plugins_update ) ) { $description .= "<br>- " . implode( "<br>- ", $plugins_update ); } if ( $i ) { $this->add( $title, $description, 'medium', admin_url( 'update-core.php' ) ); } //UPDATE Themes $themes = wp_get_themes(); $current = get_site_transient( 'update_themes' ); foreach ( (array) $current->response as $theme_file => $theme_data ) { $themes_update[] = $theme_data['theme']; } $i = 0; foreach ( (array) $themes as $key => $theme ) { if ( isset( $current->response[ $key ] ) ) { $themes[ $key ]->update = true; $i ++; } } $title = sprintf( __( 'You have %1s themes that need to be updated', 'titan-security' ), $i ); $description = "<b>" . __( "Need to update themes, as previous versions may be vulnerable:", "titan-security" ) . "</b>"; if ( ! empty( $themes_update ) ) { $description .= "<br>- " . implode( "<br>- ", $themes_update ); } if ( $i ) { $this->add( $title, $description, 'medium', admin_url( 'update-core.php' ) ); } return $this->results; } /** * Check files audit * * @return AuditResult[] Results */ public function check_files() { //readme.html $title = __( "Readme.html or readme.txt file is available in the site root", "titan-security" ); $description = __( "It is important to hide or delete the readme.html or readme.txt file, because it contains information about the WP version.", "titan-security" ); if ( file_exists( ABSPATH . "readme.html" ) || file_exists( ABSPATH . "readme.txt" ) ) { $this->add( $title, $description, 'low' ); } return $this->results; } /** * Check database password * * @return AuditResult[] Results */ public function check_fileEditor() { $title = __( "The plugins and themes file editor is enabled on your site", "titan-security" ); $description = __( "The plugins and themes file editor is a security issue because it not only shows the PHP source code, it also enables attackers to inject malicious code into your site if they manage to gain access to admin.", "titan-security" ); $description .= sprintf( __( "Disable it for live websites in <b>wp_config.php:</b><br>%1\$s", "titan-security" ), "<code>define('DISALLOW_FILE_EDIT', true);</code>" ); if ( ! defined( 'DISALLOW_FILE_EDIT' ) || ! DISALLOW_FILE_EDIT ) { $this->add( $title, $description, 'low' ); } return $this->results; } /** * Check folders access * * @return AuditResult[] Results */ public function check_folders_access() { $title = __( "The Uploads folder is browsable.", "titan-security" ); $description = __( "Allowing anyone to view all files in the Uploads folder with a browser will allow them to easily download all your uploaded files.", "titan-security" ); $url = wp_upload_dir(); $url = $url['baseurl']; $response = wp_remote_get( $url, array( 'redirection' => 0, 'sslverify' => 0 ) ); if ( ! is_wp_error( $response ) ) { $response_code = wp_remote_retrieve_response_code( $response ); if ( $response_code == 200 ) { $this->add( $title, $description, 'medium' ); } } return $this->results; } /** * Check self functions * * @return AuditResult[] Results */ public function check_self() { //FIREWALL $title = __( "The firewall is disabled.", "titan-security" ); $description = __( "Firewall protects against password brute force and blocks suspicious activity.", "titan-security" ); $firewall = $this->plugin->getPopulateOption( 'firewall_mode', '' ); if ( "disabled" === $firewall || empty( $firewall ) ) { $this->add( $title, $description, 'high', admin_url( 'admin.php?page=firewall-' . $this->plugin->getPluginName() ) ); } return $this->results; } /** * @return int */ public function get_count() { return is_array( $this->results ) ? count( $this->results ) : 0; } /** * Show page content */ public function showPageContent() { } /** * {@inheritdoc} */ public function show_audit_all() { if ( ! current_user_can( 'manage_options' ) ) { wp_die( - 2 ); } else { check_ajax_referer( 'get_audits' ); $args = array( 'results' => $this->do_audit(), ); echo $this->render_template( 'all-audit', $args ); die(); } } }
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