* 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