Apache Tomcat is a servlet container for the Java Servlet and JavaServerPages (JSP) technologies.It was found that web applications could modify the location of the Tomcathost's work directory. As web applications deployed on Tomcat have read andwrite access to this directory, a malicious web application could use thisflaw to trick Tomcat into giving it read and write access to an arbitrarydirectory on the file system. (CVE-2010-3718)A cross-site scripting (XSS) flaw was found in the Manager application,used for managing web applications on Tomcat. If a remote attacker couldtrick a user who is logged into the Manager application into visiting aspecially-crafted URL, the attacker could perform Manager application taskswith the privileges of the logged in user. (CVE-2010-4172)A second cross-site scripting (XSS) flaw was found in the Managerapplication. A malicious web application could use this flaw to conduct anXSS attack, leading to arbitrary web script execution with the privilegesof victims who are logged into and viewing Manager application web pages.(CVE-2011-0013)This update also fixes the following bugs:Users of Tomcat should upgrade to these updated packages, which containbackported patches to correct these issues. Tomcat must be restarted forthis update to take effect.