DRUPAL-CONTRIB-2023-054 The Group module has the ability to make content private to specific groups.
An authenticated user can view private content from other groups due to insufficient access control enforcement in the Drupal Group module.
- 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-2023-054?
DRUPAL-CONTRIB-2023-054 is a missing authorization vulnerability in drupal/group, published on 6 Dec 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Group module has the ability to make content private to specific groups. When viewing a list of entities, e.g. nodes, a visitor should only see those entities that are either not attached to a group or that they have group access to.
The module doesn't sufficiently enforce list access under the scenario where two users have the same outsider and insider permissions, but are members of different groups without any individual roles being assigned to said memberships. In such a scenario, the permissions hash for both will be the same even though it should differ.
This vulnerability is mitigated by the fact that an attacker must have the same hash as someone else, which is quite rare yet not unthinkable.
Which versions are affected by DRUPAL-CONTRIB-2023-054?
Linux distribution packages (1)
drupal/group Packagist:https://packages.drupal.org/8 | From 2.0.0 | 2.2.2, 3.2.2 |
How do I fix DRUPAL-CONTRIB-2023-054?
Upgrade to a fixed version.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is DRUPAL-CONTRIB-2023-054 being exploited?
There is no known exploitation of DRUPAL-CONTRIB-2023-054 in the wild and no public exploit code.