Ensure kernel lockdown is configured

RendahLevel 2Otomatisazure-container-linux

Deskripsi

Lockdown must be enabled in integrity mode. On Azure Container Linux, kernel lockdown is enabled in integrity mode, which restricts modification of the running kernel. Note that this prevents unsigned kernel modules from being loaded. This could interfere with the operation of hardware or third-party software that depends on these modules.

Cara pemeriksaan

Metode audit: Perintah shell

shell

alt0() { command -v grep >/dev/null 2>&1 || { echo "step1: grep not installed"; return 1; }; o=$(bash -c 'grep -Fw '"'"'[integrity]'"'"' /sys/kernel/security/lockdown' 2>&1); printf '%s\n' "$o" | tr -s ' \t' '  ' | sed 's/^ //;s/ $//' | grep -Fxq -- 'none [integrity] confidentiality' || { echo step1: missing 'none [integrity] confidentiality'; return 1; }; }; if alt0; then echo compliant; fi

Output yang diharapkan: compliant

Cara perbaikan

Metode perbaikan: Panduan atau patch infrastruktur

Enable kernel lockdown in integrity mode via the kernel command line by adding lockdown=integrity, then rebuild and deploy the Azure Container Linux image. On ACL the setting is applied at image build time rather than at runtime.

Properti

Sistem operasi: Apa saja
Tag: azure-container-linuxcis-converted
Referensi: CIS Azure Container Linux Benchmark v1.0.0 - 1.4.7 Ensure kernel lockdown is configured

Periksa host ini

Jalankan ini pada mesin yang diizinkan untuk Anda audit. Pemindaian bersifat hanya baca.

shell

tmaegis scan --target azure-container-linux --level 2