* Advisory ID: DRUPAL-SA-CONTRIB-2010-020 * Project: Taxonomy Access Control Lite [1] (third-party module) * Version: 6.x * Date: 2010-MAY-11 * Security risk: Less critical [2] * Exploitable from: Remote * Vulnerability: Cross Site Scripting
-------- DESCRIPTION ---------------------------------------------------------
The tac_lite module allows site administrators to hide nodes and taxonomy terms from users without permission to view them. The permission to view terms can be granted to a specific user, or all users with a specific role.
The module doesn't sufficiently strip markup when rendering taxonomy names, leading to a Cross Site Scripting (XSS [3]) vulnerability that may lead to a malicious user gaining full administrative access.
This vulnerability is mitigated by the fact that an attacker must have a role with the permission "administer taxonomy". Only users with the permission "administer tac_lite" are vulnerable to the attack.
-------- VERSIONS AFFECTED ---------------------------------------------------
* tac_lite 6.x-1.4 and earlier
Drupal core is not affected. If you do not use the contributed Taxonomy Access Control Lite [4] module, there is nothing you need to do.
-------- SOLUTION ------------------------------------------------------------
Install the latest version:
* If you use the tac_lite module for Drupal 6.x upgrade to tac_lite 6.x-1.5 [5]
See also the Taxonomy Access Control Lite [6] project page.
-------- REPORTED BY ---------------------------------------------------------
* AlexisWilke [7]
-------- FIXED BY ------------------------------------------------------------
* Dave Cohen [8] the module maintainer * Stéphane Corlosquet [9] 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 [10].
Learn more about the Drupal Security team and their policies [11], writing secure code for Drupal [12], and securing your site [13].
[1] http://drupal.org/project/tac_lite [2] http://drupal.org/security-team/risk-levels [3] http://en.wikipedia.org/wiki/Cross-site_scripting [4] http://drupal.org/project/tac_lite [5] http://drupal.org/node/1154232 [6] http://drupal.org/project/tac_lite [7] http://drupal.org/user/356197 [8] http://drupal.org/user/18468 [9] http://drupal.org/user/52142 [10] http://drupal.org/contact [11] http://drupal.org/security-team [12] http://drupal.org/writing-secure-code [13] http://drupal.org/security/secure-configuration