• Advisory ID: DRUPAL-SA-CONTRIB-2011-035
  • Project: Forward (third-party module)
  • Version: 6.x, 7.x
  • Date: 2011-August-17
  • Security risk: Moderately critical
  • 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 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
  • If you use the Forward module for Drupal 7.x, upgrade to Forward 7.x-1.1

See also the Forward project page.

Reported by

Fixed by

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.

Learn more about the Drupal Security team and their policies, writing secure code for Drupal, and securing your site.