DRUPAL-CONTRIB-2021-025 The *Admin Toolbar* (`admin_toolbar`) module extends the default toolbar provided by Drupal Core with various features facilitating day-to-d
Attackers with editor permissions can inject scripts via Admin Toolbar Search, potentially compromising admin accounts and exposing entity labels.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is DRUPAL-CONTRIB-2021-025?
DRUPAL-CONTRIB-2021-025 is a cross-site scripting vulnerability in drupal/admin_toolbar, published on 25 Aug 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
The Admin Toolbar (admin_toolbar) module extends the default toolbar provided by Drupal Core with various features facilitating day-to-day editorial and administrative work.
The Admin Toolbar Search sub-module of this module
- doesn't sanitize user input in certain cases, which leads to a Cross-Site-Scripting (XSS) vulnerability. An attacker that can create or edit certain entities, entity bundles or entity types may be able to exploit one or more Cross-Site-Scripting (XSS) vulnerabilities to target users with access to the Admin Toolbar Search search box, including site admins with privileged access.
- doesn't properly check access in certain cases, which may result in an information disclosure vulnerability of entity type and bundle labels.
The vulnerability is mitigated by the facts, that:
- the Admin Toolbar Search sub-module must be enabled.
- an attacker must have one of several permissions, of which at least some are commonly only assigned to either editors, site builders or administrators.
- a targeted account must have permission to use the search box provided by the Admin Toolbar Search sub-module.
Which versions are affected by DRUPAL-CONTRIB-2021-025?
Linux distribution packages (1)
drupal/admin_toolbar Packagist:https://packages.drupal.org/8 | All versions to 3.0.0 | 2.5.0 |
How do I fix DRUPAL-CONTRIB-2021-025?
Apply the vendor's patch.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is DRUPAL-CONTRIB-2021-025 being exploited?
There is no known exploitation of DRUPAL-CONTRIB-2021-025 in the wild and no public exploit code.