Unapproved connectors must be disabled.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-222952	TCAT-AS-000500	SV-222952r557518_rule		Medium

Description
Connectors are how Tomcat receives requests, passes them to hosted web applications, and then sends back the results to the requestor. Tomcat provides HTTP and Apache JServ Protocol (AJP) connectors and makes these protocols available via configured network ports. Unapproved connectors provide open network connections to either of these protocols and put the system at risk.

STIG	Date
Apache Tomcat Application Sever 9 Security Technical Implementation Guide	2020-09-23

Details

Check Text ( C-24624r426300_chk )
Review SSP for list of approved connectors and associated TCP/IP ports. Ensure only approved connectors are present. Execute the following command on the Tomcat server to find configured Connectors: $ grep “Connector” $CATALINA_BASE/conf/server.xml Review results and verify all connectors and their associated network ports are approved in the SSP. If connectors are found but are not approved in the SSP, this is a finding.

Check Text ( C-24624r426300_chk )

Review SSP for list of approved connectors and associated TCP/IP ports. Ensure only approved connectors are present. Execute the following command on the Tomcat server to find configured Connectors:

$ grep “Connector” $CATALINA_BASE/conf/server.xml

Review results and verify all connectors and their associated network ports are approved in the SSP.

If connectors are found but are not approved in the SSP, this is a finding.

Fix Text (F-24613r426301_fix)
Obtain ISSO approvals for the configured connectors and document in the SSP. Alternatively, edit the $CATALINA_BASE/conf/server.xml file, remove any unapproved connectors, and restart Tomcat: sudo systemctl restart tomcat sudo systemctl daemon-reload