Lookup Service must be configured to hide the server version.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-256728	SRG-APP-000266-WSR-000159	VCLU-70-000023	SV-256728r888775_rule	2023-06-15	1

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, Lookup Service must be configured to hide the server version at all times.

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, Lookup Service must be configured to hide the server version at all times.

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

✔️ Fix
Navigate to and open: /usr/lib/vmware-lookupsvc/conf/server.xml Navigate to each of the <Connector> nodes. Configure each <Connector> node with 'server="Anonymous"'. Restart the service with the following command: # vmon-cli --restart lookupsvc