* Advisory ID: DRUPAL-SA-CONTRIB-2010-098 * Project: memcache (third-party module) * Version: 5.x, 6.x * Date: 2010-September-29 * Security risk: Moderately critical * Exploitable from: Remote * Vulnerability: Access bypass, Cross-Site Scripting
-------- DESCRIPTION ---------------------------------------------------------
The Memcache project [1] provides an alternative cache backend which works with memcached program to speed up high traffic sites.
The memcache backend caches the current $user object a little too aggressively, which can lead to a role change not being recognized until the user logs in again.
The memcache_admin module does not sanitize some of the user supplied data before displaying it, leading to a Cross Site Scripting (XSS [2]) vulnerability which can be used by a malicious user to gain full administrative access.
-------- VERSIONS AFFECTED ---------------------------------------------------
* Memcache for Drupal 6.x versions prior to 6.x-1.6 * Memcache for Drupal 5.x versions prior to 5.x-1.10
Drupal core is not affected. If you do not use the contributed Memcache [3] backend there is nothing you need to do.
-------- SOLUTION ------------------------------------------------------------
Install the latest version:
* If you use the Memcache for Drupal 6.x, upgrade to Memcache 6.x-1.6 [4] * If you use the Memcache for Drupal 5.x, upgrade to Memcache 5.x-2.10 [5]
See also the Memcache project page [6].
-------- REPORTED BY ---------------------------------------------------------
* Justin James Grevich (jgrevich) [7] * Moshe Weitzman [8], of the Drupal Security Team
-------- FIXED BY ------------------------------------------------------------
* Robert Douglass (robertDouglass) [9], module maintainer * Moshe Weitzman [10], of the Drupal Security Team
-------- CONTACT -------------------------------------------------------------
The Drupal security team [11] can be reached at security at drupal.org or via the form at http://drupal.org/contact [12].
[1] http://drupal.org/project/memcache [2] http://en.wikipedia.org/wiki/Cross-site_scripting [3] http://drupal.org/project/memcache [4] http://drupal.org/node/926474 [5] http://drupal.org/node/926478 [6] http://drupal.org/project/memcache [7] http://drupal.org/user/355156 [8] http://drupal.org/user/31977 [9] http://drupal.org/user/5449 [10] http://drupal.org/user/23 [11] http://drupal.org/security-team [12] http://drupal.org/contact