* Advisory ID: DRUPAL-SA-CONTRIB-2010-021 * Project: AddThis Button (third-party module) * Version: 6.x, 5.x * Date: 2010-March-03 * Security risk: Less Critical * Exploitable from: Remote * Vulnerability: Cross Site Scripting -------- DESCRIPTION --------------------------------------------------------- The AddThis module provides an easy way to share content to over 230 supported services such as Facebook, Email and Twitter. The module did not sanitize some user-supplied data before displaying it, leading to a Cross Site Scripting (XSS [1]) vulnerability. Only users with the 'administer addthis' permission were able to exploit this vulnerability. -------- VERSIONS AFFECTED --------------------------------------------------- * AddThis Button module prior to 6.x-2.9 [2] * AddThis Button module prior to 5.x-2.2 [3] Drupal core is not affected. If you do not use the contributed AddThis Button module, there is nothing you need to do. -------- SOLUTION ------------------------------------------------------------ Install the latest version: * If you use AddThis Button for Drupal 5.x upgrade to AddThis Button 6.x-2.9 [4]. * If you use AddThis Button for Drupal 6.x upgrade to AddThis Button 5.x-2.2 [5]. See also the AddThis Button project page [6]. -------- REPORTED BY --------------------------------------------------------- * Vesa Palmu (wesku [7]), the module maintainer * Dave Hansen-Lange (dalin [8]) -------- FIXED BY ------------------------------------------------------------ * Vesa Palmu (wesku [9]), the module maintainer. -------- CONTACT ------------------------------------------------------------- The security contact for Drupal can be reached at security at drupal.org or via the form at http://drupal.org/contact. [1] http://en.wikipedia.org/wiki/Cross-site_scripting [2] http://drupal.org/node/731576 [3] http://drupal.org/node/731578 [4] http://drupal.org/node/731576 [5] http://drupal.org/node/731578 [6] http://drupal.org/project/addthis [7] http://drupal.org/user/75070 [8] http://drupal.org/user/18981 [9] http://drupal.org/user/75070