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Subject svn commit: r1144818 - in /tomcat/trunk/webapps/docs: changelog.xml security-howto.xml
Date Sun, 10 Jul 2011 10:59:45 GMT
Author: markt
Date: Sun Jul 10 10:59:45 2011
New Revision: 1144818

7.0.18 not released


Modified: tomcat/trunk/webapps/docs/changelog.xml
--- tomcat/trunk/webapps/docs/changelog.xml (original)
+++ tomcat/trunk/webapps/docs/changelog.xml Sun Jul 10 10:59:45 2011
@@ -81,6 +81,15 @@
+  <subsection name="Web applications">
+    <changelog>
+      <add>
+        Add additional information to the documentation web application on the
+        benefits and remaining risks when running under a security manager.
+        (markt)
+      </add>
+    </changelog>
+  </subsection>
   <subsection name="Other">

Modified: tomcat/trunk/webapps/docs/security-howto.xml
--- tomcat/trunk/webapps/docs/security-howto.xml (original)
+++ tomcat/trunk/webapps/docs/security-howto.xml Sun Jul 10 10:59:45 2011
@@ -83,7 +83,20 @@
     sandbox, significantly limiting a web application's ability to perform
     malicious actions such as calling System.exit(), establishing network
     connections or accessing the file system outside of the web application's
-    root and temporary directories.</p>
+    root and temporary directories. However, it should be noted that there are
+    some malicious actions, such as triggering high CPU consumption via an
+    infinite loop, that the security manager cannot prevent.</p>
+    <p>Enabling the security manager is usually done to limit the potential
+    impact, should an attacker find a way to compromise a trusted web
+    application . A security manager may also be used to reduce the risks of
+    running untrusted web applications (e.g. in hosting environments) but it
+    should be noted that the security manager only reduces the risks of
+    running untrusted web applications, it does not eliminate them. If running
+    multiple untrusted web applications, it is recommended that each web
+    application is deployed to a separate Tomcat instance (and ideally separate
+    hosts) to reduce the ability of a malicious web application impacting the
+    availability of other applications.</p>
     <p>Tomcat is tested with the security manager enabled; but the majority of
     Tomcat users do not run with a security manager, so Tomcat is not as well

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