* Advisory ID: DRUPAL-SA-CONTRIB-2011-008 * Project: Chatroom (third-party module) * Version: 6.x * Date: 2011-February-02 * Security risk: Moderately critical * Exploitable from: Remote * Vulnerability: Cross Site Scripting and Cross Site Request Forgery -------- DESCRIPTION --------------------------------------------------------- The Chatroom module provides real-time chat capabilities to Drupal. .... Vulnerability: Cross Site Scripting The module does not properly escape the contents of chat messages in pages listing the chats contained in a chatroom, leading to a Cross Site Scripting (XSS [1]) vulnerability. Any user with permission to view chatroom summary pages is vulnerable to attack. .... Vulnerability: Cross Site Request Forgery The module does not properly check for valid form tokens, leading to a Cross Site Request Forgery(XSS [2]) vulnerability. Users with administrative privileges are vulnerable to replay attacks. -------- VERSIONS AFFECTED --------------------------------------------------- * Chatroom module for Drupal 6.x versions prior to 6.x-2.13. Drupal core is not affected. If you do not use the contributed Chatroom [3] module, there is nothing you need to do. -------- SOLUTION ------------------------------------------------------------ Install the latest version: * Upgrade to Chatroom 6.x-2.13 [4] See also the Chatroom project page [5]. -------- REPORTED BY --------------------------------------------------------- * XSS reported by Steffen Schüssler [6] * CSRF reported by Greg Knaddison [7] of the Drupal Security Team -------- FIXED BY ------------------------------------------------------------ * Justin Randell [8], module maintainer -------- CONTACT ------------------------------------------------------------- The Drupal security team [9] can be reached at security at drupal.org [10] or via the form at http://drupal.org/contact [11]. [1] http://en.wikipedia.org/wiki/Cross-site_scripting [2] http://en.wikipedia.org/wiki/Cross-site_request_forgery [3] http://drupal.org/project/chatroom [4] http://drupal.org/node/1045716 [5] http://drupal.org/project/chatroom [6] http://drupal.org/user/107190 [7] http://drupal.org/user/36762 [8] http://drupal.org/user/38580 [9] http://drupal.org/security-team [10] http://drupal.org [11] http://drupal.org/contact