[IT-SecNots] [Security-news] Subgroup - Less critical - Access bypass - SA-CONTRIB-2021-003

[security-news AT drupal.org]

View online: https://www.drupal.org/sa-contrib-2021-003

Project: Subgroup [1]
Version: 1.0.x-dev
Date: 2021-January-27
Security risk: *Less critical* 9∕25
AC:Basic/A:User/CI:Some/II:None/E:Theoretical/TD:Uncommon [2]
Vulnerability: Access bypass

Description: 
This module enables you to add groups to other groups in a tree structure
where access can be inherited up or down the tree.

When you configure Subgroup to have a tree with at least three levels, users
may inadvertently get permissions in a group that is an uncle or cousin of
the source group, rather than a direct ancestor or descendant. Trees with
only multiple nodes at the lowest tier (or nowhere) are unaffected.

Solution: 
Install the latest version, Subgroup 1.0.1 [3], and clear your caches.

Reported By: 
  * Mori Sugimoto [4] of the Drupal Security Team
  * kyk [5]

Fixed By: 
  * Kristiaan Van den Eynde [6]

Coordinated By: 
  * Greg Knaddison [7] of the Drupal Security Team


[1] https://www.drupal.org/project/subgroup
[2] https://www.drupal.org/security-team/risk-levels
[3] https://www.drupal.org/project/subgroup/releases/1.0.1
[4] https://www.drupal.org/user/82971
[5] https://www.drupal.org/user/29822
[6] https://www.drupal.org/user/1345130
[7] https://www.drupal.org/user/36762

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