vSphere UI must be configured to hide the server version.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-256801	VCUI-70-000024	SV-256801r889402_rule		Medium

Description
Web servers will often display error messages to client users with enough information to aid in the debugging of the error. The information given back in error messages may display the web server type, version, patches installed, plug-ins and modules installed, type of code being used by the hosted application, and any backends being used for data storage. This information could be used by an attacker to blueprint what type of attacks might be successful. Therefore, vSphere UI must be configured to hide the server version at all times.

Description

Web servers will often display error messages to client users with enough information to aid in the debugging of the error. The information given back in error messages may display the web server type, version, patches installed, plug-ins and modules installed, type of code being used by the hosted application, and any backends being used for data storage. This information could be used by an attacker to blueprint what type of attacks might be successful. Therefore, vSphere UI must be configured to hide the server version at all times.

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

Details

Check Text ( C-60476r889400_chk )
At the command prompt, run the following command: # xmllint --xpath '/Server/Service/Connector[@port="${http.port}"]/@server' /usr/lib/vmware-vsphere-ui/server/conf/server.xml Expected result: server="Anonymous" If the output does not match the expected result, this is a finding.

Fix Text (F-60419r889401_fix)
Navigate to and open: /usr/lib/vmware-vsphere-ui/server/conf/server.xml Navigate to each of the nodes. Configure each node with 'server="Anonymous"'. Restart the service with the following command: # vmon-cli --restart vsphere-ui