Security advisories: Drupal core - Moderately critical - Improper error handling - SA-CORE-2024-002

Project: Drupal coreDate: 2024-October-16Security risk: Moderately critical 13 ∕ 25 AC:Basic/A:None/CI:None/II:All/E:Theoretical/TD:UncommonVulnerability: Improper error handlingAffected versions: >=10.0 < 10.2.10Description: 

Under certain uncommon site configurations, a bug in the CKEditor 5 module can cause some image uploads to move the entire webroot to a different location on the file system. This could be exploited by a malicious user to take down a site.

The issue is mitigated by the fact that several non-default site configurations must exist simultaneously for this to occur.

Solution: 

Install the latest version:

• If you are using Drupal 10.2, update to Drupal 10.2.10.
• Drupal 10.3 and above are not affected, nor is Drupal 7.

All versions of Drupal 10 prior to 10.2 are end-of-life and do not receive security coverage. (Drupal 8 and Drupal 9 have both reached end-of-life.)

This advisory is not covered by Drupal Steward.

Reported By: 

• Pierre Rudloff

Fixed By: 

• catch of the Drupal Security Team
• Lee Rowlands of the Drupal Security Team
• Benji Fisher of the Drupal Security Team
• Kim Pepper
• Wim Leers
• xjm of the Drupal Security Team

Coordinated By: 

• xjm of the Drupal Security Team
• Dave Long of the Drupal Security Team
• Juraj Nemec of the Drupal Security Team