DRUPAL-CONTRIB-2020-030 This module enables you to hand out permissions on a smaller subset, section or community of your website.
Attackers can bypass node access controls to read or modify content if the GroupNode plugin is used without other grant hooks.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is DRUPAL-CONTRIB-2020-030?
DRUPAL-CONTRIB-2020-030 is a missing authorization vulnerability in drupal/group, published on 29 Jul 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
This module enables you to hand out permissions on a smaller subset, section or community of your website.
The module used to leverage the node grants system but turned it off in its recent 8.x-1.0 release in favor of a system that works for ALL entity types, not just nodes. By doing so, some regular node access checks turned from neutral into allowed because of the way the node grants system operates.
This vulnerability is mitigated by the fact that the victim must have the GroupNode plugin installed on their website and have no other hook_node_grants() implementations on their website aside from the one that was recently removed by Group. If you do not use the GroupNode plugin or still have hook_node_grants() implementing modules enabled, your site may not be affected.
Which versions are affected by DRUPAL-CONTRIB-2020-030?
Linux distribution packages (1)
drupal/group Packagist:https://packages.drupal.org/8 | From 1.0.0 to 1.0.0 | None |
How do I fix DRUPAL-CONTRIB-2020-030?
No fix has been published for DRUPAL-CONTRIB-2020-030 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is DRUPAL-CONTRIB-2020-030 being exploited?
There is no known exploitation of DRUPAL-CONTRIB-2020-030 in the wild and no public exploit code.