The NFS daemon must be disabled.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-58299	AOSX-09-000141	SV-72729r1_rule		Medium

Description
If the system does not require access to NFS (Network File System) file shares or is not acting as an NFS server, then support for NFS is non-essential and NFS services must be disabled. NFS is a network file system protocol supported by Unix-like operating systems. Enabling any service increases the attack surface for an intruder. By disabling unnecessary services, the attack surface is minimized.

Description

If the system does not require access to NFS (Network File System) file shares or is not acting as an NFS server, then support for NFS is non-essential and NFS services must be disabled. NFS is a network file system protocol supported by Unix-like operating systems. Enabling any service increases the attack surface for an intruder. By disabling unnecessary services, the attack surface is minimized.

STIG	Date
Apple OS X 10.9 (Mavericks) Workstation Security Technical Implementation Guide	2017-01-05

Details

Check Text ( C-59125r1_chk )
The NFS daemon must be disabled. To check if NFS is disabled, run the following command: sudo /usr/libexec/PlistBuddy -c 'print com.apple.nfsd:Disabled' /var/db/launchd.db/com.apple.launchd/overrides.plist If the returned value isn't 'true', this is a finding.

Fix Text (F-63615r1_fix)
To disable NFS, run the following command: sudo defaults write /private/var/db/launchd.db/com.apple.launchd/overrides.plist 'com.apple.nfsd' -dict Disabled -bool true