Ensure Signed System Volume (SSV) Is Enabled

높음레벨 1자동macos

설명

Signed System Volume is a security feature introduced in macOS 11.0 Big Sur. During system installation, a SHA-256 cryptographic hash is calculated for all immutable system files and stored in a Merkle tree which itself is hashed as the Seal. Both are stored in the metadata of the snapshot created of the System volume. The seal is verified by the boot loader at startup. macOS will not boot if system files have been tampered with. If validation fails, the user will be instructed to reinstall the operating system. During read operations for files located in the Signed System Volume, a hash is calculated and compared to the value stored in the Merkle tree. Running without Signed System Volume on a production system could run the risk of Apple software that integrates directly with macOS being modified.

점검 방법

감사 방식: 셸 명령

shell

/usr/bin/csrutil authenticated-root status 2>/dev/null

예상 출력: Authenticated Root status: enabled

조치 방법

조치 방식: 가이드 또는 인프라 패치

If SSV has been disabled, assume that the operating system has been compromised. Back up any files, and do a clean install to a known good Operating System.

속성

운영 체제: macos-14
태그: macossonoma
참고 자료: CIS Apple macOS 14.0 Sonoma Benchmark v3.1.0 - 5.1.4 Ensure Signed System Volume (SSV) Is Enabled

이 호스트 점검하기

감사 권한이 있는 시스템에서 실행하세요. 스캔은 읽기 전용입니다.

shell

tmaegis scan --target macos