DRUPAL-CONTRIB-2018-081 This module provides a JSON:API specification-compliant HTTP API for accessing and manipulating Drupal content and configuration entities.
An attacker with low privileges can bypass access controls to read restricted Drupal content via filtered JSON:API GET requests.
- 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-2018-081?
DRUPAL-CONTRIB-2018-081 is a missing authorization vulnerability in drupal/jsonapi, published on 19 Dec 2018. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
This module provides a JSON:API specification-compliant HTTP API for accessing and manipulating Drupal content and configuration entities.
The module doesn't sufficiently check access when responding to certain filtered collection requests, thereby causing an access bypass vulnerability. (This means certain GET requests are vulnerable; no POST, PATCH or DELETE requests are vulnerable.)
In order to fix this issue, two new hooks were added: hook_jsonapi_ENTITY_TYPE_filter_access() and hook_jsonapi_entity_field_filter_access(). Sites with custom entity types and/or with entity or field access customizations may need to implement these newly introduced hooks.
Which versions are affected by DRUPAL-CONTRIB-2018-081?
Linux distribution packages (1)
drupal/jsonapi Packagist:https://packages.drupal.org/8 | All versions | 1.24.0 |
How do I fix DRUPAL-CONTRIB-2018-081?
Apply the vendor's patch.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is DRUPAL-CONTRIB-2018-081 being exploited?
There is no known exploitation of DRUPAL-CONTRIB-2018-081 in the wild and no public exploit code.