Connector address attribute must be set.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-223009	TCAT-AS-001730	SV-223009r879887_rule		Low

Description
Connectors are how Tomcat receives requests over a network port, passes them to hosted web applications via HTTP or AJP, and then sends back the results to the requestor. The "address" attribute specifies which network interface the connector listens on. If no IP address is specified, the connector will listen on all configured interfaces. Access to the connector must be restricted to only the network interface(s) specified in the System Security Plan (SSP).

Description

Connectors are how Tomcat receives requests over a network port, passes them to hosted web applications via HTTP or AJP, and then sends back the results to the requestor. The "address" attribute specifies which network interface the connector listens on. If no IP address is specified, the connector will listen on all configured interfaces. Access to the connector must be restricted to only the network interface(s) specified in the System Security Plan (SSP).

STIG	Date
Apache Tomcat Application Server 9 Security Technical Implementation Guide	2023-09-13

Details

Check Text ( C-24681r426471_chk )
Review SSP documentation for list of approved connectors and associated TCP/IP ports and interfaces. Verify the address attribute is specified for each connector and is set to the network interface specified in the SSP. Execute the following command to find configured Connectors: sudo grep -i -B1 -A5 connector $CATALINA_BASE/conf/server.xml Review results and examine the "address=" field for each connector. If the connector address attribute is not specified as per the SSP, this is a finding.

Check Text ( C-24681r426471_chk )

Review SSP documentation for list of approved connectors and associated TCP/IP ports and interfaces.

Verify the address attribute is specified for each connector and is set to the network interface specified in the SSP.

Execute the following command to find configured Connectors:

sudo grep -i -B1 -A5 connector $CATALINA_BASE/conf/server.xml

Review results and examine the "address=" field for each connector.

If the connector address attribute is not specified as per the SSP, this is a finding.

Fix Text (F-24670r426472_fix)
Ensure the address attribute for each connector and the network interfaces are specified in the SSP. Edit the following file From the Tomcat server as a privileged user: $CATALINA_BASE/conf/server.xml Locate each Connector element then edit or add the "address=" field for each connector and specify the appropriate network IP address. The following is an example using a random IP address: EXAMPLE: port="8443" address="192.168.0.145" ... /> Restart the Tomcat server: sudo systemctl restart tomcat sudo systemctl daemon-reload

Fix Text (F-24670r426472_fix)

Ensure the address attribute for each connector and the network interfaces are specified in the SSP.

Edit the following file From the Tomcat server as a privileged user:

$CATALINA_BASE/conf/server.xml

Locate each Connector element then edit or add the "address=" field for each connector and specify the appropriate network IP address. The following is an example using a random IP address:

EXAMPLE:
port="8443"
address="192.168.0.145"
...
/>

Restart the Tomcat server:
sudo systemctl restart tomcat
sudo systemctl daemon-reload