vSphere UI must disable the shutdown port.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-256808	VCUI-70-000031	SV-256808r889423_rule		Medium

Description
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.

STIG	Date
VMware vSphere 7.0 vCenter Appliance UI Security Technical Implementation Guide	2023-02-21

Details

Check Text ( C-60483r889421_chk )
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.

Check Text ( C-60483r889421_chk )

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.

Fix Text (F-60426r889422_fix)
Navigate to and open: /usr/lib/vmware-vsphere-ui/server/conf/server.xml Ensure the server port is disabled: Restart the service with the following command: # vmon-cli --restart vsphere-ui