SA-CONTRIB-2012-028 - Hierarchical Select - Cross Site Scripting (XSS)

CVE: CVE-2012-1652

The Hierarchical Select module provides a “hierarchical_select” form element, which is a greatly enhanced way for letting the user select items in a taxonomy. The module does not sanitize some of the user-supplied data before displaying it, leading to a Cross Site Scripting (XSS) vulnerability that may lead to a malicious user gaining full administrative access.

This vulnerability is mitigated by the fact that the attacker must have a role with the ‘administer taxonomy’ permission; specifically he must be able to create or modify vocabularies and then modify the vocabulary’s help text.

Versions affected

• Hierarchical Select 6.x-3.x versions prior to 6.x-3.7.

Drupal core is not affected. If you do not use the contributed Hierarchical Select module, there is nothing you need to do.

Solution

Install the latest version:

• If you use the Hierarchical Select module for Drupal 6.x, upgrade to Hierarchical Select 6.x-3.8

See also the Hierarchical Select project page.

Reported by

• Sam Oldak
• Wim Leers the module maintainer

Fixed by

• Wim Leers the module maintainer

Coordinated by

• Stéphane Corlosquet of the Drupal Security Team