DRUPAL-CONTRIB-2021-030 This module enables you to create an individual hash for each user.
An attacker with a valid user hash can access cached content intended for other users if the page cache is not properly invalidated.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is DRUPAL-CONTRIB-2021-030?
DRUPAL-CONTRIB-2021-030 is a vulnerability in drupal/user_hash, published on 22 Sep 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
This module enables you to create an individual hash for each user. These hashes can be used for authentication instead of the user's password, e.g. for views exporters.
The module doesn't sufficiently invalidate page output when the page_cache module is used.
This vulnerability is mitigated by the fact that an attacker must have a user hash that grants access to specific content and the attack must be timed to the reset of the page cache.
Which versions are affected by DRUPAL-CONTRIB-2021-030?
Linux distribution packages (1)
drupal/user_hash Packagist:https://packages.drupal.org/8 | All versions | 2.0.1 |
How do I fix DRUPAL-CONTRIB-2021-030?
Apply the vendor's patch.
Is DRUPAL-CONTRIB-2021-030 being exploited?
There is no known exploitation of DRUPAL-CONTRIB-2021-030 in the wild and no public exploit code.