The macOS system must disable Server Message Block sharing.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-259478	APPL-14-002001	SV-259478r958472_rule		Medium

Description

Support for Server Message Block (SMB) file sharing is nonessential and must be disabled. The information system must be configured to provide only essential capabilities.

STIG	Date
Apple macOS 14 (Sonoma) Security Technical Implementation Guide	2024-12-04

Details

Check Text (C-63217r941054_chk)

Verify the macOS system is configured to disable Server Message Block sharing with the following command:

/bin/launchctl print-disabled system | /usr/bin/grep -c '"com.apple.smbd" => disabled'

If the result is not "1", this is a finding.

Fix Text (F-63125r941055_fix)

Configure the macOS system to disable Server Message Block sharing with the following command:

/bin/launchctl disable system/com.apple.smbd

The system may need to be restarted for the update to take effect.