View online: https://www.drupal.org/sa-contrib-2024-046

Project: Block permissions [1] Date: 2024-October-09 Security risk: *Moderately critical* 13 ∕ 25 AC:Basic/A:Admin/CI:Some/II:Some/E:Theoretical/TD:All [2] Vulnerability: Access bypass

Affected versions: >=1.0.0 <1.2.0 Description:  This module enables you to manage blocks from specific modules in the specific themes.

The module doesn't sufficiently check permissions under the scenario when a block is added using the form "/admin/structure/block/add/{plugin_id}/{theme}" (route "block.admin_add"). The attacker can add the block to the theme where they can't manage blocks.

This vulnerability is mitigated by the fact that an attacker must have a role with the permission "administer blocks provided by [provider]".

Solution:  Install the latest version:

* If you use the block_permissions module for Drupal 8.x, upgrade to block_permissions version at least 8.x-1.2 [3] or the more recent 8.x-1.3 [4]

Reported By:  * Francesco Sardara [5]

Fixed By:  * Francesco Sardara [6] * Evgenii Nikitin [7]

Coordinated By:  * Greg Knaddison [8] of the Drupal Security Team * Juraj Nemec [9] of the Drupal Security Team

[1] https://www.drupal.org/project/block_permissions [2] https://www.drupal.org/security-team/risk-levels [3] https://www.drupal.org/project/block_permissions/releases/8.x-1.2 [4] https://www.drupal.org/project/block_permissions/releases/8.x-1.3 [5] https://www.drupal.org/user/2353864 [6] https://www.drupal.org/user/2353864 [7] https://www.drupal.org/user/682600 [8] https://www.drupal.org/u/greggles [9] https://www.drupal.org/u/poker10