Business information leak In typo3/cms-core

Description

TYPO3 Install Tool vulnerable to Information Disclosure of Encryption Key

Problem

The plaintext value of $GLOBALS['SYS']['encryptionKey'] was displayed in the editing forms of the TYPO3 Install Tool user interface. This allowed attackers to utilize the value to generate cryptographic hashes used for verifying the authenticity of HTTP request parameters. Exploiting this vulnerability requires an administrator-level backend user account with system maintainer permissions.

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.

Credits

Thanks to TYPO3 core & security team member Benjamin Franzke who fixed the issue.

References

Mitigation

Update Impact

Minimal update. May introduce new vulnerabilities or breaking changes.

Ecosystem
Package
Affected version
Patched versions