V-279937

Discussion

It is detrimental for operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors. Operating systems are capable of providing a wide variety of functions and services. Some of the functions and services, provided by default, may not be necessary to support essential organizational operations (e.g., key missions, functions). Examples of nonessential capabilities include, but are not limited to, games, software packages, tools, and demonstration software not related to requirements or providing a wide array of functionality not required for every mission but that cannot be disabled.

Check Content

Note: If NFS mounts are authorized and in use on the system, this control is not applicable.

Verify that Ubuntu does not have the nfs-kernel-server package installed.

Determine if packages are installed:
$ sudo dpkg -l | grep -E 'nfs-kernel-server'

If the nfs-kernel-server package is installed, this is a finding.