CVE-2017-6931 Drupal Settings Tray access bypass
Attackers can modify unauthorized data via the Settings Tray module in Drupal core, requiring an upgrade to fix.
- 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 CVE-2017-6931?
CVE-2017-6931 is a medium-severity missing authorization vulnerability in Drupal Drupal, published on 1 Mar 2018. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
In Drupal versions 8.4.x versions before 8.4.5 the Settings Tray module has a vulnerability that allows users to update certain data that they do not have the permissions for. If you have implemented a Settings Tray form in contrib or a custom module, the correct access checks should be added. This release fixes the only two implementations in core, but does not harden against other such bypasses. This vulnerability can be mitigated by disabling the Settings Tray module.
Weakness: CWE-434
Which versions are affected by CVE-2017-6931?
4 open source packages ship an affected version, including drupal/core and drupal/drupal. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
drupal/core Packagist | From 8.4.0 | 8.4.5 |
drupal/core Packagist | From 8.4.0 | 8.4.5 |
drupal/drupal Packagist | From 8.4.0 | 8.4.5 |
drupal/drupal Packagist | From 8.4.0 | 8.4.5 |
Products include Drupal Drupal.
How do I fix CVE-2017-6931?
Upgrade drupal/core to 8.4.5 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2017-6931 being exploited?
There is no known exploitation of CVE-2017-6931 in the wild and no public exploit code.
Other vulnerabilities in Drupal Drupal
Sources
Also known as GHSA-7ffh-cjvg-fpr4.