[Security-news] SA-CONTRIB-2012-032 - Block Class - Cross Site scripting

[security-news at drupal.org]

  * Advisory ID: DRUPAL-SA-CONTRIB-2012-032
  * Project: Block Class [1] (third-party module)
  * Version: 7.x
  * Date: 2012-March-07
  * Security risk: Moderately Critical [2]
  * Exploitable from: Remote
  * Vulnerability: Cross Site Scripting

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

The block class module allows users to add classes to any block through the
block's configuration interface

The class names in a block were not properly filtered. Someone with the
ability to modify or create blocks could inject java script that would be
rendered when viewing the block.

-------- VERSIONS AFFECTED  
---------------------------------------------------

  * Blockclass versions prior to 7.x-1.0.

Drupal core is not affected. If you do not use the contributed Block Class
[3] module, there is nothing you need to do.

-------- SOLUTION  
------------------------------------------------------------

Install the latest version:

  * If you use the block class module for Drupal 7.x, upgrade to block class
    7.x-1.1 [4]

See also the Block Class [5] project page.

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

  * Katherine Senzee [6]

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

  * Berend de Boer [7] the module maintainer

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

  * Michael Hess [8] 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 [9].

Learn more about the Drupal Security team and their policies [10], writing
secure code for Drupal [11], and securing your site [12].


[1] http://drupal.org/project/block_class
[2] http://drupal.org/security-team/risk-levels
[3] http://drupal.org/project/block_class
[4] http://drupal.org/node/1471090
[5] http://drupal.org/project/block_class
[6] http://drupal.org/user/139855
[7] http://drupal.org/user/143552
[8] http://drupal.org/user/102818
[9] http://drupal.org/contact
[10] http://drupal.org/security-team
[11] http://drupal.org/writing-secure-code
[12] http://drupal.org/security/secure-configuration