View online: http://drupal.org/node/1966780

* Advisory ID: DRUPAL-SA-CONTRIB-2013-042 * Project: RESTful Web Services [1] (third-party module) * Version: 7.x * Date: 2013-April-10 * Security risk: Critical [2] * Exploitable from: Remote * Vulnerability: Denial of Service

-------- DESCRIPTION ---------------------------------------------------------

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 module interferes with Drupal's page cache and allows an attacker to poison the cache with non-HTML page responses, thereby exposing a denial of service vulnerability.

This vulnerability is mitigated by the fact that page caching must be enabled and the anonymous user role must be assigned a RESTWS permission, for example "access resource node".

-------- CVE IDENTIFIER(S) ISSUED --------------------------------------------

* /A CVE identifier [3] will be requested, and added upon issuance, in accordance with Drupal Security Team processes./

-------- VERSIONS AFFECTED ---------------------------------------------------

* RESTWS 7.x-1.x versions prior to 7.x-1.3. * RESTWS 7.x-2.x versions prior to 7.x-2.0-alpha5.

Drupal core is not affected. If you do not use the contributed RESTful Web Services [4] module, there is nothing you need to do.

-------- SOLUTION ------------------------------------------------------------

Install the latest version:

* If you use the RESTWS 1.x module for Drupal 7.x, upgrade to RESTWS 7.x-1.3 [5] * If you use the RESTWS 2.x module for Drupal 7.x, upgrade to RESTWS 7.x-2.0-alpha5 [6]

Also see the RESTful Web Services [7] project page.

-------- REPORTED BY ---------------------------------------------------------

* Dylan Tack [8] of the Drupal Security Team

-------- FIXED BY ------------------------------------------------------------

* Klaus Purer [9] the module maintainer * Stéphane Corlosquet [10] of the Drupal Security Team

-------- COORDINATED BY ------------------------------------------------------

* Klaus Purer [11] of the Drupal Security Team

-------- CONTACT AND MORE INFORMATION ----------------------------------------

The Drupal security team can be reached at security at drupal.org or via the contact form at http://drupal.org/contact [12].

Learn more about the Drupal Security team and their policies [13], writing secure code for Drupal [14], and securing your site [15].

[1] http://drupal.org/project/restws [2] http://drupal.org/security-team/risk-levels [3] http://cve.mitre.org/ [4] http://drupal.org/project/restws [5] http://drupal.org/node/1966752 [6] http://drupal.org/node/1966758 [7] http://drupal.org/project/restws [8] http://drupal.org/user/96647 [9] http://drupal.org/user/262198 [10] http://drupal.org/user/52142 [11] http://drupal.org/user/262198 [12] http://drupal.org/contact [13] http://drupal.org/security-team [14] http://drupal.org/writing-secure-code [15] http://drupal.org/security/secure-configuration