The vCenter VAMI service must have debug logging disabled.

Information needed by an attacker to begin looking for possible vulnerabilities in a web server includes any information about the web server and plug-ins or modules being used. When debugging or trace information is enabled in a production web server, information about the web server, such as 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 may be displayed.

Because this information may be placed in logs and general messages during normal operation of the web server, an attacker does not need to cause an error condition to gain this information.

At the command prompt, run the following command:

# /opt/vmware/cap_lighttpd/sbin/lighttpd -p -f /var/lib/vmware/cap-lighttpd/lighttpd.conf 2>/dev/null|grep "debug.log-request-handling"

Expected result:

debug.log-request-handling = "disable"

If "debug.log-request-handling" is not set to "disable", this is a finding.

Note: The command must be run from a bash shell and not from a shell generated by the "appliance shell". Use the "chsh" command to change the shell for the account to "/bin/bash". Refer to KB Article 2100508 for more details:

https://kb.vmware.com/s/article/2100508

Navigate to and open:

/var/lib/vmware/cap-lighttpd/lighttpd.conf

Add or reconfigure the following value:

debug.log-request-handling = "disable"

Restart the service with the following command:

# systemctl restart cap-lighttpd