TYPO3 v15 dev-main snapshot ()

Classes/Authentication/MimicServiceInterface.php

@@ -0,0 +1,35 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Core\Authentication;
+
+interface MimicServiceInterface
+{
+    /**
+     * Mimics user authentication for known invalid authentication requests. This method can be used
+     * to mitigate timing discrepancies for invalid authentication attempts, which can be used for
+     * user enumeration.
+     *
+     * Authentication services can implement this method to simulate(!) corresponding processes that
+     * would be processed during valid requests - e.g. perform password hashing (timing) or call
+     * remote services (network latency).
+     *
+     * @return bool whether other services shall continue
+     * @link https://cwe.mitre.org/data/definitions/208.html: CWE-208: Observable Timing Discrepancy
+     */
+    public function mimicAuthUser(): bool;
+}