* Advisory ID: DRUPAL-SA-CONTRIB-2012-0XX
  * Project: MultiBlock [1] (third-party module)
  * Version: 6.x, 7.x
  * Date: 2012-March-28
  * Security risk: Moderately critical [2]
  * Exploitable from: Remote
  * Vulnerability: Cross Site Scripting

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

The MultiBlock module allows an administrator to create multiple instances of
blocks provided by other modules. The module does not properly sanitize the
block title provided by a block administrator, leading to a cross-site
scripting (XSS) vulnerability. Such an attack may lead to a malicious user
gaining full administrative access. A user must have a role with the
permission 'administer blocks' to exploit this vulnerability.

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

  * MultiBlock 6.x-1.x versions prior to 6.x-1.4.
  * MultiBlock 7.x-1.x versions prior to 7.x-1.1.

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

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

Install the latest version:

  * If you use the MultiBlock module for Drupal 6.x, upgrade to MultiBlock
    6.x-1.4 [4]
  * If you use the MultiBlock module for Drupal 7.x, upgrade to MultiBlock
    7.x-1.1 [5]

Also see the MultiBlock [6] project page.

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

  * Justin Klein Keane [7]

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

  * Andrew Levine [8] the module maintainer

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

  * Ivo Van Geertruyen [9] of the Drupal Security Team
  * Michael Hess [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/multiblock
[2] http://drupal.org/security-team/risk-levels
[3] http://drupal.org/project/multiblock
[4] http://drupal.org/node/1505410
[5] http://drupal.org/node/1505414
[6] http://drupal.org/project/multiblock
[7] http://drupal.org/user/302225
[8] http://drupal.org/user/49940
[9] http://drupal.org/user/383424
[10] http://drupal.org/user/102818
[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