vSphere UI must disable the shutdown port.

An attacker has at least two reasons to stop a web server. The first is to cause a denial of service, and the second is to put in place changes the attacker made to the web server configuration. If the Tomcat shutdown port feature is enabled, a shutdown signal can be sent to vSphere UI through this port. To ensure availability, the shutdown port must be disabled.

At the command prompt, run the following commands: # xmllint --format /usr/lib/vmware-vsphere-ui/server/conf/server.xml | sed '2 s/xmlns=".*"//g' | xmllint --xpath '/Server/@port' - Expected result: port="${shutdown.port}" If the output does not match the expected result, this is a finding. # grep shutdown /etc/vmware/vmware-vmon/svcCfgfiles/vsphere-ui.json|sed -e 's/^[ ]*//' Expected result: "-Dshutdown.port=-1", If the output does not match the expected result, this is a finding.

Navigate to and open: /usr/lib/vmware-vsphere-ui/server/conf/server.xml Ensure the server port is disabled: <Server port="${shutdown.port}"> Restart the service with the following command: # vmon-cli --restart vsphere-ui