high7.1

CVE-2024-25121

TYPO3 vulnerable to Improper Access Control Persisting File Abstraction Layer Entities via Data Handler

Impact

### Problem Entities of the File Abstraction Layer (FAL) could be persisted directly via `DataHandler`. This allowed attackers to reference files in the fallback storage directly and retrieve their file names and contents. The fallback storage ("zero-storage") is used as a backward compatibility layer for files located outside properly configured file storages and within the public web root directory. Exploiting this vulnerability requires a valid backend user account. ### Solution Update to TYPO3 versions 8.7.57 ELTS, 9.5.46 ELTS, 10.4.43 ELTS, 11.5.35 LTS, 12.4.11 LTS, 13.0.1 that fix the problem described. #### ℹ️ Strong security defaults - Manual actions required When persisting entities of the File Abstraction Layer directly via DataHandler, `sys_file` entities are now denied by default, and `sys_file_reference` & `sys_file_metadata` entities are not permitted to reference files in the fallback storage anymore. When importing data from secure origins, this must be explicitly enabled in the corresponding DataHandler instance by using `$dataHandler->isImporting = true;`. ### Credits Thanks to TYPO3 core & security team member Oliver Hader who reported and fixed the issue. ### References * [TYPO3-CORE-SA-2024-006](https://typo3.org/security/advisory/typo3-core-sa-2024-006)

Affected packages

Ecosystem	Package	Affected	Fixed in
composer	`typo3/cms-core`	>= 8.0.0, <= 8.7.56	8.7.57

Affected products

Vendor	Product	Affected versions
Typo3	Typo3	from 8.0.0 before 8.7.57 from 9.0.0 before 9.5.46 from 10.0.0 before 10.4.43 from 11.0.0 before 11.5.35 from 12.0.0 before 12.4.11 Version 13.0.0

Weakness classification

CWE-200 CWE-284