The vCenter UI service "ErrorReportValve showServerInfo" must be set to "false".

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-259115	VCUI-80-000067	SV-259115r935249_rule		Medium

Description
The Error Report Valve is a simple error handler for HTTP status codes that will generate and return HTML error pages. It can also be configured to return predefined static HTML pages for specific status codes and/or exception types. Disabling "showServerInfo" will only return the HTTP status code and remove all CSS from the default nonerror-related HTTP responses.

STIG	Date
VMware vSphere 8.0 vCenter Appliance User Interface (UI) Security Technical Implementation Guide	2023-10-29

Details

Check Text ( C-62855r935247_chk )
At the command prompt, run the following command: # xmllint --xpath '/Server/Service/Engine/Host/Valve[@className="org.apache.catalina.valves.ErrorReportValve"]' /usr/lib/vmware-vsphere-ui/server/conf/server.xml Example result: If the "ErrorReportValve" element is not defined or "showServerInfo" is not set to "false", this is a finding.

Fix Text (F-62764r935248_fix)
Navigate to and open: /usr/lib/vmware-vsphere-ui/server/conf/server.xml Locate the following Host block: ... Inside this block, add or update the following on a new line: Restart the service with the following command: # vmon-cli --restart vsphere-ui