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os_secure_boot_verify Ensure Secure Boot Level Set to Full

NIST macOS Security Compliance Project Sequoia Guidance, Revision 4.0 (be5491f)
All changes in this version
first version loaded macOS

Title

Ensure Secure Boot Level Set to Full

Control

/usr/libexec/mdmclient QuerySecurityInfo 2>/dev/null | /usr/bin/grep -c "SecureBootLevel = full"

Discussion

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 a T2 or Apple Silicon Macs.

Related controls

si-6, si-7, si-7.1, si-7.5

Fix

NOTE: Boot into Recovery Mode and enable Full Secure Boot