[IT-SecNots] [Security-news] Chaos Tool Suite (ctools) - Moderately critical - Access bypass - SA-CONTRIB-2021-015

[security-news AT drupal.org]

View online: https://www.drupal.org/sa-contrib-2021-015

Project: Chaos Tool Suite (ctools) [1]
Date: 2021-June-16
Security risk: *Moderately critical* 13∕25
AC:None/A:None/CI:Some/II:None/E:Theoretical/TD:Uncommon [2]
Vulnerability: Access bypass

Description: 
Chaos tool suite (ctools) module provides a number of APIs and extensions for
Drupal, it's 8.x-3.x branch is a start from scratch to evaluate the features
of ctools that didn't make it into Drupal Core 8.0.x and port them.

The module doesn't sufficiently handle block access control on its EntityView
plugin. This is a followup to more fully implement the fixes from
SA-CONTRIB-2021-009 [3]

This vulnerability is mitigated by the fact that successful exploitation
requires special conditions in place such as custom blockAccess() method that
differs from the default return value of 'AccessResult::allowed()' and
extending from EntityView.

Solution: 
Install the latest version:

  * If you use the CTools module for Drupal 8.x, upgrade to CTools 8.x-3.7 
[4]

Reported By: 
  * Michael Vanetta [5]

Fixed By: 
  * Michael Vanetta [6]
  * Joël Pittet [7]

Coordinated By: 
  * Greg Knaddison [8] of the Drupal Security Team
  * Drew Webber [9] of the Drupal Security Team


[1] https://www.drupal.org/project/ctools
[2] https://www.drupal.org/security-team/risk-levels
[3] https://www.drupal.org/sa-contrib-2021-009
[4] https://www.drupal.org/project/ctools/releases/8.x-3.7
[5] https://www.drupal.org/user/452914
[6] https://www.drupal.org/user/452914
[7] https://www.drupal.org/user/160302
[8] https://www.drupal.org/user/36762
[9] https://www.drupal.org/user/255969

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