[Security-news] SA-CONTRIB-2012-028 - Hierarchical Select - Cross Site Scripting (XSS)

[security-news at drupal.org]

  * Advisory ID: DRUPAL-SA-CONTRIB-2012-028
  * Project: Hierarchical Select [1] (third-party module)
  * Version: 6.x
  * Date: 2012-February-29
  * Security risk: Moderately critical [2]
  * Exploitable from: Remote
  * Vulnerability: Cross Site Scripting

-------- DESCRIPTION  
---------------------------------------------------------

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 [3]) 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 [4] 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 [5]

See also the Hierarchical Select [6] project page.

-------- REPORTED BY  
---------------------------------------------------------

  * Sam Oldak [7]
  * Wim Leers [8] the module maintainer

-------- FIXED BY  
------------------------------------------------------------

  * Wim Leers [9] the module maintainer

-------- COORDINATED BY  
------------------------------------------------------

  * Stéphane Corlosquet [10] 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 [11].

Learn more about the Drupal Security team and their policies [12], writing
secure code for Drupal [13], and securing your site [14].


[1] http://drupal.org/project/hierarchical_select
[2] http://drupal.org/security-team/risk-levels
[3] http://en.wikipedia.org/wiki/Cross-site_scripting
[4] http://drupal.org/project/hierarchical_select
[5] http://drupal.org/node/1461318
[6] http://drupal.org/project/hierarchical_select
[7] http://drupal.org/user/366337
[8] http://drupal.org/user/99777
[9] http://drupal.org/user/99777
[10] http://drupal.org/user/52142
[11] http://drupal.org/contact
[12] http://drupal.org/security-team
[13] http://drupal.org/writing-secure-code
[14] http://drupal.org/security/secure-configuration