DRUPAL-CONTRIB-2021-014 This module allows users to authenticate against an Oauth 2.0 / OpenID Connect identity provider to login to your Drupal site.
Attackers can bypass OAuth restrictions and log in as blocked users via Drupal password reset emails, leading to unauthorized account access.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is DRUPAL-CONTRIB-2021-014?
DRUPAL-CONTRIB-2021-014 is an authentication bypass vulnerability in drupal/openid_connect, published on 2 Jun 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
This module allows users to authenticate against an Oauth 2.0 / OpenID Connect identity provider to login to your Drupal site.
The module doesn't sufficiently protect against unauthorized local access, by way of using the 'password reset' facility, for users who are supposed to only be able to log in through the identity provider. This creates a scenario where after such a user is blocked from logging in through the identity provider but not explicitly blocked in Drupal, they are still able to log in by sending themselves a Drupal 'password reset' e-mail.
Which versions are affected by DRUPAL-CONTRIB-2021-014?
Linux distribution packages (1)
drupal/openid_connect Packagist:https://packages.drupal.org/8 | All versions | 1.1.0 |
How do I fix DRUPAL-CONTRIB-2021-014?
Apply the vendor's patch.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is DRUPAL-CONTRIB-2021-014 being exploited?
There is no known exploitation of DRUPAL-CONTRIB-2021-014 in the wild and no public exploit code.