* Advisory ID: DRUPAL-SA-CONTRIB-2010-099 * Project: Views Bulk Operations (third-party module) * Version: 6.x * Date: 2010-October-6 * Security risk: Not critical * Exploitable from: Remote * Vulnerability: Access bypass -------- DESCRIPTION --------------------------------------------------------- Views Bulk Operations augments Views by allowing bulk operations to be executed on the nodes and users displayed by a view. It does so by showing a checkbox in front of each item, and adding a select box containing operations that can be applied on the selected items. In some circumstances, a malicious user could use Views Bulk Operation to cause user 0 (the anonymous user) to be deleted. The effects of deleting user 0 vary depending on the system configuration and the use of other contributed modules, ranging from trivial errors to significant loss of functionality. The risk is mitigated by the fact that a malicious user would need permission to a view that lets him/her manage users through Views Bulk Operations in order to exploit this vulnerability. -------- VERSIONS AFFECTED --------------------------------------------------- * Views Bulk Operations for Drupal 6 prior to 6.x-1.10 Drupal core is not affected. If you do not use the contributed Views Bulk Operations [1] module, there is nothing you need to do. -------- SOLUTION ------------------------------------------------------------ Install the latest version: * If you use the Views Bulk Operations module for Drupal 6.x upgrade to Views Bulk Operations 6.x-1.10 [2] See also the Views Bulk Operations [3] project page. -------- REPORTED BY --------------------------------------------------------- * Joonas Kiminki (onaz [4]) * Teemu Merikoski (tcmug [5]) -------- FIXED BY ------------------------------------------------------------ * Joonas Kiminki (onaz [6]) * Teemu Merikoski (tcmug [7]) -------- CONTACT ------------------------------------------------------------- The Drupal security team [8] can be reached at security at drupal.org or via the form at http://drupal.org/contact [9]. [1] http://drupal.org/project/views_bulk_operations [2] http://drupal.org/node/933596 [3] http://drupal.org/project/views_bulk_operations [4] http://drupal.org/user/158968 [5] http://drupal.org/user/515884 [6] http://drupal.org/user/158968 [7] http://drupal.org/user/515884 [8] http://drupal.org/security-team [9] http://drupal.org/contact