The macOS system must ensure secure boot level set to full.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-259573	APPL-14-005100	SV-259573r941341_rule		Medium

Description
The Secure Boot security setting must be set to full. Full security is the default Secure Boot setting in macOS. During startup, when Secure Boot is set to full security, the Mac will verify the integrity of the operating system before allowing the operating system to boot. Note: This will only return a proper result on T2 or Apple Silicon Macs. Satisfies: SRG-OS-000445-GPOS-00199,SRG-OS-000446-GPOS-00200,SRG-OS-000447-GPOS-00201

Description

The Secure Boot security setting must be set to full. Full security is the default Secure Boot setting in macOS. During startup, when Secure Boot is set to full security, the Mac will verify the integrity of the operating system before allowing the operating system to boot. Note: This will only return a proper result on T2 or Apple Silicon Macs. Satisfies: SRG-OS-000445-GPOS-00199,SRG-OS-000446-GPOS-00200,SRG-OS-000447-GPOS-00201

STIG	Date
Apple macOS 14 (Sonoma) Security Technical Implementation Guide	2024-01-10

Details

Check Text ( C-63312r941339_chk )
Verify the macOS system is configured to ensure secure boot level set to full using the following command: /usr/libexec/mdmclient QuerySecurityInfo \| /usr/bin/grep -c "SecureBootLevel = full" If the result is not "1", this is a finding.

Fix Text (F-63220r941340_fix)
Configure the macOS system to ensure secure boot level set to full by booting into Recovery Mode and enable Full Secure Boot.