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             AUSCERT External Security Bulletin Redistribution

A vulnerability has been identified in memcache (Drupal third-party module)
                             30 September 2010


        AusCERT Security Bulletin Summary

Product:           memcache (Drupal third-party module)
Publisher:         Drupal
Operating System:  Windows
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Cross-site Scripting     -- Remote with User Interaction
                   Administrator Compromise -- Remote with User Interaction
Resolution:        Patch/Upgrade

Original Bulletin: 

- --------------------------BEGIN INCLUDED TEXT--------------------

  * 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


- --------------------------END INCLUDED TEXT--------------------

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