DRUPAL-CONTRIB-2020-006 This module enables you to authenticate Drupal users using an external SAML Identity Provider.
Attackers can bypass admin approval during SAML registration to create accounts, potentially gaining unauthorized access if default roles have elevated permissions.
- 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-2020-006?
DRUPAL-CONTRIB-2020-006 is an authentication bypass vulnerability in drupal/saml_sp, published on 11 Mar 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
This module enables you to authenticate Drupal users using an external SAML Identity Provider.
If the site is configured to allow visitors to register for user accounts but administrator approval is required, the module doesn't sufficiently enforce the administrative approval requirement, in the case where the requesting user has already authenticated through SAML.
This vulnerability is mitigated by the fact that user accounts created in this way have only default roles, which may not have access significantly beyond that of an anonymous user. To mitigate the vulnerability without upgrading sites could disable public registration.
Which versions are affected by DRUPAL-CONTRIB-2020-006?
Linux distribution packages (1)
drupal/saml_sp Packagist:https://packages.drupal.org/8 | All versions | 3.7.0 |
How do I fix DRUPAL-CONTRIB-2020-006?
Upgrade to a fixed version.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is DRUPAL-CONTRIB-2020-006 being exploited?
There is no known exploitation of DRUPAL-CONTRIB-2020-006 in the wild and no public exploit code.