SA-CONTRIB-2014-099 - Open Atrium Core - Access bypass

The oa_core module contains the base access control mechanism for the Open Atrium distribution (OA2). In OA2, file attachments are given the same access permission as the node they are attached to.

The vulnerability is when an attachment is removed from a node that has Revisions enabled. It allows anonymous users to view the file that is still attached to the previous revision.

This vulnerability is mitigated by the fact that it requires using Revisions and removing files attached to revisions. If revisions are disabled or files are not removed from nodes then access works as designed.

CVE identifier(s) issued

• CVE-2014-8736

Versions affected

• oa_core 7.x-2.x versions prior to 7.x-2.22.

Drupal core is not affected. If you do not use the contributed Open Atrium module,
there is nothing you need to do.

Solution

Install the latest version:

• If you use the oa_core module for Drupal 7.x, upgrade to oa_core 7.x-2.22.

Also see the Open Atrium project page.

Reported by

• .John

Fixed by

• Mike Potter the module maintainer

Coordinated by

• Hunter Fox of the Drupal Security Team
• Greg Knaddison of the Drupal Security Team