Drupal Core - Critical - Access Bypass - SA-CORE-2017-002

Advisory ID: DRUPAL-SA-CORE-2017-002 Project: Drupal core Version: 8.x Date: 2017-April-19 CVEID: CVE-2017-6919 Security risk: 17/25 ( Critical) AC:Basic/A:User/CI:All/II:All/E:Theoretical/TD:Default Vulnerability: Access bypass

Description

This is a critical access bypass vulnerability. A site is only affected by this if all of the following conditions are met:

The site has the RESTful Web Services (rest) module enabled. The site allows PATCH requests. An attacker can get or register a user account on the site.

While we don't normally provide security releases for unsupported minor releases, given the potential severity of this issue, we have also provided an 8.2.x release to ensure that sites that have not had a chance to update to 8.3.0 can update safely.

CVE identifier(s) issued

CVE-2017-6919

Versions affected

Drupal 8 prior to 8.2.8 and 8.3.1. Drupal 7.x is not affected.

Solution

If the site is running Drupal 8.2.7 or earlier, upgrade to 8.2.8. If the site is running Drupal 8.3.0, upgrade to 8.3.1.

Also see the Drupal core project page.

Reported by

Samuel Mortenson

Fixed by

Alex Pott of the Drupal Security Team xjm of the Drupal Security Team Lee Rowlands of the Drupal Security Team Wim Leers Sascha Grossenbacher Daniel Wehner Tobias Stöckler Nathaniel Catchpole of the Drupal Security Team

Coordinated by

The Drupal Security team

Contact and More Information

The Drupal security team can be reached at security at drupal.org or via the contact form at https://www.drupal.org/contact.

Learn more about the Drupal Security team and their policies, writing secure code for Drupal, and securing your site.

Follow the Drupal Security Team on Twitter at https://twitter.com/drupalsecurity