InformationThe server.built date represents the date which Tomcat was compiled and packaged. This value is presented to Tomcat clients when clients connect to the server.
Altering the server.built string may increase the complexity for attackers to determine which vulnerabilities affect the server platform.
NOTE: Nessus has provided the target output to assist in reviewing the benchmark to ensure target compliance.
SolutionPerform the following to alter the server version string which gets displayed when clients connect to the server.
Extract the ServerInfo.properties file from the catalina.jar file:
$ cd $CATALINA_HOME/lib
$ jar xf catalina.jar org/apache/catalina/util/ServerInfo.properties
Navigate to the util directory that was created
$ cd org/apache/Catalina/util
Open ServerInfo.properties in an editor
Update the server.built attribute in the ServerInfo.properties file.
Update the catalina.jar with the modified ServerInfo.properties file.
$ jar uf catalina.jar org/apache/catalina/util/ServerInfo.properties
The default value for the server.built attribute is build date and time. For example, Jul 8 2008 11:40:35.