Vulnerability Discussion

Verify the operating system is configured to disable non-essential capabilities. The most secure way of ensuring a non-essential capability is disabled is to not have the capability installed.

When an application uses Generic Security Services API (GSSAPI), typically it will have direct access to its security credentials, and all cryptographic operations are performed in the application's process. This is undesirable, but "gssproxy" can help in almost all use cases. It provides privilege separation to applications using the GSSAPI: The gssproxy daemon runs on the system, holds the application's credentials, and performs operations on behalf of the application.

Check

Determine if the "gssproxy" package is installed with the following command:

$ sudo yum list installed gssproxy

If the "gssproxy" package is installed, this is a finding.

Fix

Configure OL 8 to disable non-essential capabilities by removing the "gssproxy" package from the system with the following command:

$ sudo yum remove gssproxy