ESX Agent Manager must be configured to not show error reports.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-256697	VCEM-70-000025	SV-256697r888647_rule		Medium

Description
Web servers will often display error messages to client users, including 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, the Security Token Service must be configured with a catchall error handler that redirects to a standard "error.jsp".

Description

Web servers will often display error messages to client users, including 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, the Security Token Service must be configured with a catchall error handler that redirects to a standard "error.jsp".

STIG	Date
VMware vSphere 7.0 vCenter Appliance EAM Security Technical Implementation Guide	2023-06-15

Details

Check Text ( C-60372r888645_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-eam/web/conf/server.xml Expected result: If the output of the command does not match the expected result, this is a finding.

Fix Text (F-60315r888646_fix)
Navigate to and open: /usr/lib/vmware-eam/web/conf/server.xml Locate the following Host block: ... Inside this block, add the following on a new line: Restart the service with the following command: # vmon-cli --restart eam