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The vCenter UI service must disable stack tracing.


Finding ID Version Rule ID IA Controls Severity
V-259110 VCUI-80-000036 SV-259110r935234_rule Medium
Stack tracing provides debugging information from the application call stacks when a runtime error is encountered. If stack tracing is left enabled, Tomcat will provide this call stack information to the requestor, which could result in the loss of sensitive information or data that could be used to compromise the system.
VMware vSphere 8.0 vCenter Appliance User Interface (UI) Security Technical Implementation Guide 2023-10-29


Check Text ( C-62850r935232_chk )
At the command prompt, run the following command:

# xmllint --xpath "//Connector[@allowTrace = 'true']" /usr/lib/vmware-vsphere-ui/server/conf/server.xml

Expected result:

XPath set is empty

If any connectors are returned, this is a finding.
Fix Text (F-62759r935233_fix)
Navigate to and open:


Navigate to and locate:


Remove the 'allowTrace="true"' setting.

Note: If "allowTrace" is not present, it defaults to false.

Restart the service with the following command:

# vmon-cli --restart vsphere-ui