Cis Tomcat10 V110 1.1

Remove extraneous files and directories (Manual)

Description

The installation may provide example applications, documentation, and other directories which may not serve a production use.

Rationale

Removing sample resources is a defense in depth measure that reduces potential exposures introduced by these resources.

Audit Procedure

Perform the following to determine the existence of extraneous resources:

$ ls -l $CATALINA_HOME/webapps/examples \
    $CATALINA_HOME/webapps/docs \
    $CATALINA_HOME/webapps/ROOT \
    $CATALINA_HOME/webapps/host-manager \
    $CATALINA_HOME/webapps/manager

No output implies no sample resources are present.

Remediation

Perform the following to remove extraneous resources:

$ rm -rf $CATALINA_HOME/webapps/docs \
    $CATALINA_HOME/webapps/examples \
    $CATALINA_HOME/webapps/ROOT

If the Manager and HOST-Manager application are not utilized, also remove the following resources:

$ rm -rf $CATALINA_HOME/webapps/host-manager \
    $CATALINA_HOME/webapps/manager

Default Value

docs, examples, ROOT, manager and host-manager are default web applications shipped with Tomcat.

References

1. https://tomcat.apache.org/tomcat-9.0-doc/security-howto.html#Default_web_applications/General

CIS Controls

v8:

• 4.8 Uninstall or Disable Unnecessary Services on Enterprise Assets and Software
  • Uninstall or disable unnecessary services on enterprise assets and software, such as an unused file sharing service, web application module, or service function.

v7:

• 2.6 Address unapproved software
  • Ensure that unauthorized software is either removed or the inventory is updated in a timely manner

Profile Applicability

• Level 2