EncryptInterceptor only provides partial protection on untrusted network

This is CVE-2022-29885
apache · May 10, 2022 · 36826ea · 36826ea
1 parent 0b898bf
commit 36826ea
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Showing 4 changed files with 21 additions and 5 deletions.
diff --git a/webapps/docs/changelog.xml b/webapps/docs/changelog.xml
@@ -191,6 +191,12 @@
         recommendation for the use the <code>trimSpaces</code> option for Jasper
         in production environments. (markt)
       </fix>
+      <fix>
+        Update the documentation web application to state that the
+        <code>EncryptInterceptor</code> does not provide sufficient protection
+        to run Tomcat clustering over an untrusted network. This is
+        CVE-2022-29885. (markt)
+      </fix>
     </changelog>
   </subsection>
   <subsection name="Other">

diff --git a/webapps/docs/cluster-howto.xml b/webapps/docs/cluster-howto.xml
@@ -127,9 +127,13 @@ Tomcat cluster. These include:</p>
   <li>private LAN</li>
   <li>a Virtual Private Network (VPN)</li>
   <li>IPSEC</li>
-  <li>Encrypt cluster traffic using the <a href="config/cluster-interceptor.html#org.apache.catalina.tribes.group.interceptors.EncryptInterceptor_Attributes">EncryptInterceptor</a></li>
 </ul>
 
+<p>The <a href="cluster-interceptor.html#org.apache.catalina.tribes.group.interceptors.EncryptInterceptor_Attributes">EncryptInterceptor</a>
+provides confidentiality and integrity protection but it does not protect
+against all risks associated with running a Tomcat cluster on an untrusted
+network, particularly DoS attacks.</p>
+
 </section>
 
 <section name="Cluster Basics">

diff --git a/webapps/docs/config/cluster.xml b/webapps/docs/config/cluster.xml
@@ -52,12 +52,16 @@ to run a cluster on a insecure, untrusted network.</p>
 <p>There are many options for providing a secure, trusted network for use by a
 Tomcat cluster. These include:</p>
 <ul>
-  <li><a href="cluster-interceptor.html#org.apache.catalina.tribes.group.interceptors.EncryptInterceptor_Attributes">EncryptInterceptor</a></li>
   <li>private LAN</li>
   <li>a Virtual Private Network (VPN)</li>
   <li>IPSEC</li>
 </ul>
 
+<p>The <a href="cluster-interceptor.html#org.apache.catalina.tribes.group.interceptors.EncryptInterceptor_Attributes">EncryptInterceptor</a>
+provides confidentiality and integrity protection but it does not protect
+against all risks associated with running a Tomcat cluster on an untrusted
+network, particularly DoS attacks.</p>
+
 </section>
 <section name="Engine vs Host placement">
   <p>

diff --git a/webapps/docs/security-howto.xml b/webapps/docs/security-howto.xml
@@ -477,10 +477,12 @@
       trusted network is used for all of the cluster related network traffic. It
       is not safe to run a cluster on a insecure, untrusted network.</p>
 
-      <p>If you are operating on an untrusted network or would prefer to
-      exercise an over-abundance of caution, you can use the
+      <p>If you require confidentiality and/or integrity protection then you can
+      use the
       <a href="config/cluster-interceptor.html#org.apache.catalina.tribes.group.interceptors.EncryptInterceptor_Attributes">EncryptInterceptor</a>
-      to encrypt traffic between nodes.</p>
+      to encrypt traffic between nodes. This interceptor does not protect
+      against all the risks of running on an untrusted network, particularly
+      DoS attacks.</p>
     </subsection>
   </section>