[Security-news] SA-CONTRIB-2011-035 Forward module - Open redirect

[security-news at drupal.org]

  * Advisory ID: DRUPAL-SA-CONTRIB-2011-035
  * Project: Forward [1] (third-party module)
  * Version: 6.x, 7.x
  * Date: 2011-August-17
  * Security risk: Moderately critical [2]
  * Exploitable from: Remote
  * Vulnerability: Open redirect

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

The Forward module enables you to add a "forward this page" link to each
node. The link takes regular site visitors to a form where they can generate
an email to a friend. The module doesn't check to ensure that the page being
forwarded refers to an internal path. This could allow someone to hard code a
forward link to an unscrupulous external site.

This vulnerability is mitigated by the fact that an attacker must have a role
that enables them to post content to the site that contains embedded links.

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

  * Forward 6.x-1.x versions prior to 6.x-1.20.
  * Forward 7.x-1.x versions prior to 7.x-1.1.

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

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

Install the latest version:

  * If you use the Forward module for Drupal 6.x, upgrade to Forward 6.x-1.20
    [4]
  * If you use the Forward module for Drupal 7.x, upgrade to Forward 7.x-1.1
    [5]

See also the Forward [6] project page.

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

  * Christian Schmidt [7] of Berlingske Media

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

  * John Oltman [8] the module maintainer
  * Christian Schmidt [9] of Berlingske Media

-------- 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/forward
[2] http://drupal.org/security-team/risk-levels
[3] http://drupal.org/project/forward
[4] http://drupal.org/node/1252132
[5] http://drupal.org/node/1252118
[6] http://drupal.org/project/forward
[7] http://drupal.org/user/216078
[8] http://drupal.org/user/699926
[9] http://drupal.org/user/216078
[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