• Advisory ID: DRUPAL-SA-CONTRIB-2014-047
  • Project: Zen (third-party theme)
  • Version: 7.x
  • Date: 2014-April-30
  • Security risk: Moderately critical
  • Exploitable from: Remote
  • Vulnerability: Cross Site Scripting

Description

The Zen theme is a powerful, yet simple, HTML5 starting theme with a responsive, mobile-first grid design.

The theme does not properly sanitize theme settings before they are used in the output of a page. Themes that have copied code from Zen's template.php may suffer from this same issue. If your theme creates variables in a preprocess using text from a custom theme setting, like this:

$variables['skip_link_text'] = theme_get_setting('skip_link_text');

you can prevent malicious XSS attacks by modifying the code to look like this:

$variables['skip_link_text'] = check_plain(theme_get_setting('skip_link_text'));

This vulnerability is mitigated by the fact that an attacker must have a role with the permission "administer theme".

CVE identifier(s) issued

  • CVE-2014-7980

Versions affected

  • Zen 7.x-5.x versions prior to 7.x-5.5.
  • Zen 7.x-3.x versions prior to 7.x-3.3.

Drupal core is not affected. If you do not use the contributed Zen theme, there is nothing you need to do.

Solution

Install the latest version:

Also see the Zen project page.

Reported by

Fixed by

Coordinated by

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.

Learn more about the Drupal Security team and their policies, writing secure code for Drupal, and securing your site.


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