[Security-news] Drupal core - Moderately critical - Access bypass - SA-CORE-2019-011

[security-news at drupal.org]

View online: https://www.drupal.org/sa-core-2019-011

Project: Drupal core [1]
Version: 8.8.x-dev8.7.x-dev
Date: 2019-December-18
Security risk: *Moderately critical* 10∕25
AC:Basic/A:User/CI:Some/II:None/E:Theoretical/TD:Default [2]
Vulnerability: Access bypass

Description: 
The Media Library module has a security vulnerability whereby it doesn't
sufficiently restrict access to media items in certain configurations.

Solution: 
   * If you are using Drupal 8.7.x, you should upgrade to Drupal 8.7.11 [3].
   * If you are using Drupal 8.8.x, you should upgrade to Drupal 8.8.1 [4].

Versions of Drupal 8 prior to 8.7.x are end-of-life and do not receive
security coverage.

Alternatively, you may mitigate this vulnerability by unchecking the "Enable
advanced UI" checkbox on /admin/config/media/media-library. (This mitigation
is not available in 8.7.x.)

Reported By: 
   * Adam G-H  [5]

Fixed By: 
   * Adam G-H  [6]
   * Jess   [7] of the Drupal Security Team
   * Andrei Mateescu  [8]
   * Greg Knaddison  [9] of the Drupal Security Team
   * Alex Bronstein  [10] of the Drupal Security Team
   * Sean Blommaert  [11]
   * Lee Rowlands  [12] of the Drupal Security Team


[1] https://www.drupal.org/project/drupal
[2] https://www.drupal.org/security-team/risk-levels
[3] https://security.drupal.org/project/drupal/releases/8.7.11
[4] https://security.drupal.org/project/drupal/releases/8.8.1
[5] https://www.drupal.org/user/205645
[6] https://www.drupal.org/user/205645
[7] https://www.drupal.org/user/65776
[8] https://www.drupal.org/user/729614
[9] https://www.drupal.org/user/36762
[10] https://www.drupal.org/user/78040
[11] https://www.drupal.org/user/545912
[12] https://www.drupal.org/user/395439