Details

Web servers will often display error messages to client users, displaying 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. As such, the Security Token Service must be configured to not show server version information in error messages.

Solution

Navigate to and open /usr/lib/vmware-sso/vmware-sts/conf/server.xml.

Locate the following Host block:

…

Inside this block, add the following on a new line:

Supportive Information

The following resource is also helpful.

• https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_VMW_vSphere_6-7_STIG.zip

This security hardening control applies to the following category of controls within NIST 800-53: System and Information Integrity.This control applies to the following type of system Unix.

References

• 800-53|SI-11a.
• CAT|II
• CCI|CCI-001312
• Rule-ID|SV-239675r679097_rule
• STIG-ID|VCST-67-000024
• Vuln-ID|V-239675

Source

• Tenable.com/audits