Access to JMX management interface must be restricted.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-222969	TCAT-AS-000780	SV-222969r615938_rule		Medium

Description
Java Management Extensions (JMX) is used to provide programmatic access to Tomcat for management purposes. This includes monitoring and control of java applications running on Tomcat. If network access to the JMX port is not restricted, attackers can gain access to the application used to manage the system.

STIG	Date
Apache Tomcat Application Sever 9 Security Technical Implementation Guide	2021-06-15

Details

Check Text ( C-24641r426351_chk )
Review the system security plan and network documentation. Identify the management networks that are used for system management. From the Tomcat server as a privileged user, run the following command: sudo grep -i jmxremote /etc/systemd/system/tomcat.service sudo ps -ef \|grep -i jmxremote If there are no results, the JMX process is not being used, and this is not a finding. If output includes jmxremote information, review the -Dcom.sun.management.jmxremote.host setting. Compare the IP address associated with the JMX process with the network information in the SSP. Ensure the IP address space is dedicated for system management purposes. If the IP address that is associated with the JMX process is not dedicated to system management usage, this is a finding. If jmxremote is in use but the host IP address is not specified, this is a finding.

Check Text ( C-24641r426351_chk )

Review the system security plan and network documentation. Identify the management networks that are used for system management.

From the Tomcat server as a privileged user, run the following command:

sudo grep -i jmxremote /etc/systemd/system/tomcat.service
sudo ps -ef |grep -i jmxremote

If there are no results, the JMX process is not being used, and this is not a finding.

If output includes jmxremote information, review the -Dcom.sun.management.jmxremote.host setting.

Compare the IP address associated with the JMX process with the network information in the SSP. Ensure the IP address space is dedicated for system management purposes.

If the IP address that is associated with the JMX process is not dedicated to system management usage, this is a finding.

If jmxremote is in use but the host IP address is not specified, this is a finding.

Fix Text (F-24630r426352_fix)
Make an operational determination regarding the use of JMX. If JMX management is decided upon, identify the management networks that are used for system management. Update the system security plan and network documentation with the information. Edit the /etc/systemd/system/tomcat.service file. Add or modify the existing CATALINA_OPTS -Dcom.sun.management.jmxremote.host setting. Set the host parameter to an IP address that is only available on a management network. EXAMPLE: CATALINA_OPTS='-Dcom.sun.management.jmxremote.host=192.168.0.150' Restart Tomcat: sudo systemctl restart tomcat sudo systemctl daemon-reload Verify jmxmanagement access is restricted to the management network IP address range.

Fix Text (F-24630r426352_fix)

Make an operational determination regarding the use of JMX. If JMX management is decided upon, identify the management networks that are used for system management. Update the system security plan and network documentation with the information.

Edit the /etc/systemd/system/tomcat.service file.

Add or modify the existing CATALINA_OPTS -Dcom.sun.management.jmxremote.host setting. Set the host parameter to an IP address that is only available on a management network.

EXAMPLE:
CATALINA_OPTS='-Dcom.sun.management.jmxremote.host=192.168.0.150'

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

Verify jmxmanagement access is restricted to the management network IP address range.