Release : 18.0
Component : CA Endevor Software Change Manager
In server.xml, add this line:
<Valve className="org.apache.catalina.valves.ErrorReportValve" showReport="false" showServerInfo="false" />
This will globally suppress the Tomcat version and error report, and just show the error code, in webapps not using custom error pages.
Upgrade to latest maintenance: SO09627