SA-CONTRIB-2015-052 - RESTful Web Services - Access Bypass

This module enables you to expose Drupal entities as RESTful web services. It provides a machine-readable interface to exchange resources in JSON, XML and RDF.

The RESTWS Basic Auth submodule doesn’t sufficiently disable page caching for authenticated requests thereby leaking potentially confidential data to unauthorized users.

This vulnerability is mitigated by the fact that the RESTWS Basic Auth submodule must be enabled, page caching must be enabled and permissions for a resource containing sensitive data must be enabled (for example the User resource).

CVE identifier(s) issued

• CVE-2015-4345

Versions affected

• RESTWS 7.x-1.x versions prior to 7.x-1.5.
• RESTWS 7.x-2.x versions prior to 7.x-2.3.

Drupal core is not affected. If you do not use the contributed RESTful Web Services module,
there is nothing you need to do.

Solution

Install the latest version:

• If you use the RESTWS module for Drupal 7.x, upgrade to RESTWS 7.x-1.5 or RESTWS 7.x-2.3

Also see the RESTful Web Services project page.

Reported by

• Jason Little

Fixed by

• Klaus Purer the module maintainer and member of the Drupal Security Team

Coordinated by

• Klaus Purer of the Drupal Security Team