CVE-2024-55894

Ein entfernter, anonymer oder authentisierter Angreifer kann mehrere Schwachstellen in TYPO3 Core ausnutzen, um Dateien zu manipulieren und vertrauliche Informationen preiszugeben.

### Problem A vulnerability has been identified in the backend user interface functionality involving deep links. Specifically, this functionality is susceptible to Cross-Site Request Forgery (CSRF). Additionally, state-changing actions in downstream components incorrectly accepted submissions via HTTP GET and did not enforce the appropriate HTTP method. Successful exploitation of this vulnerability requires the victim to have an active session on the backend user interface and to be deceived into interacting with a malicious URL targeting the backend, which can occur under the following conditions: * the user opens a malicious link, such as one sent via email. * the user visits a compromised or manipulated website while the following settings are misconfigured: + `security.backend.enforceReferrer` feature is disabled, + `BE/cookieSameSite` configuration is set to `lax` or `none` The vulnerability in the affected downstream component “Backend User Module” allows attackers to initiate password resets for other backend users or to terminate their user sessions. ### Solution Update to TYPO3 versions 11.5.42 ELTS, 12.4.25 LTS, 13.4.3 LTS that fix the problem described. ### Credits Thanks to Gabriel Dimitrov who reported this issue and to TYPO3 core and security members Benjamin Franzke, Oliver Hader, Andreas Kienast, Torben Hansen, Elias Häußler who fixed the issue.