View online: http://drupal.org/node/1528614

  * Advisory ID: DRUPAL-SA-CONTRIB-2012-058
  * Project: Fivestar [1] (third-party module)
  * Version: 6.x
  * Date: 2012-April-11
  * Security risk: Moderately critical [2]
  * Exploitable from: Remote
  * Vulnerability: Input Validation

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

The Fivestar module enables you to add a voting widget to nodes and comments.

The module does not sufficiently validate all votes passed by the
asynchronous voting widget allowing a malicious user to improperly modify
voting averages.

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

  * Fivestar 6.x-1.x versions prior to 6.x-1.20

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

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

Install the latest version:

  * If you use the Fivestar module for Drupal 6.x, upgrade to Fivestar
    6.x-1.20 [4]

Also see the Fivestar [5] project page.

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

  * Ezra Barnett Gildesgame [6]

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

  * Eric J. Duran [7], the module maintainer

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

  * Ben Jeavons [8] of the Drupal Security Team
  * Michael Hess [9] 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 [10].

Learn more about the Drupal Security team and their policies [11], writing
secure code for Drupal [12], and securing your site [13].


[1] http://drupal.org/project/fivestar
[2] http://drupal.org/security-team/risk-levels
[3] http://drupal.org/project/fivestar
[4] http://drupal.org/node/1528600
[5] http://drupal.org/project/fivestar
[6] http://drupal.org/user/69959
[7] http://drupal.org/user/244460
[8] http://drupal.org/user/91990
[9] http://drupal.org/user/102818
[10] http://drupal.org/contact
[11] http://drupal.org/security-team
[12] http://drupal.org/writing-secure-code
[13] http://drupal.org/security/secure-configuration