Ensure the audit configuration is immutable

낮음레벨 2자동linux

설명

Set system audit so that audit rules cannot be modified with auditctl . Setting the flag "-e 2" forces audit to be put in immutable mode. Audit changes can only be made on system reboot. Note: This setting will require the system to be rebooted to update the active auditd configuration settings.

점검 방법

감사 방식: 셸 명령

shell

alt0() { command -v grep >/dev/null 2>&1 || { echo "step1: grep not installed"; return 1; }; command -v tail >/dev/null 2>&1 || { echo "step1: tail not installed"; return 1; }; o=$(bash -c 'grep -Ph -- '"'"'^\h*-e\h+2\b'"'"' /etc/audit/rules.d/*.rules | tail -1' 2>&1); printf '%s\n' "$o" | tr -s ' \t' '  ' | sed 's/^ //;s/ $//' | grep -Fxq -- '-e 2' || { echo step1: missing '-e 2'; return 1; }; }; if alt0; then echo compliant; fi

예상 출력: compliant

조치 방법

조치 방식: 가이드 또는 인프라 패치

Edit or create the file /etc/audit/rules.d/99-finalize.rules and add the line -e 2 at the end of the file: Example: # printf '\n%s' "-e 2" >> /etc/audit/rules.d/99-finalize.rules Load audit rules Merge and load the rules into active configuration: # augenrules --load Check if reboot is required. # if [[ $(auditctl -s | grep "enabled") =~ "2" ]]; then printf "Reboot required to load rules\n"; fi

속성

운영 체제: sles-16
태그: cis-convertedlinux
참고 자료: CIS SUSE Linux Enterprise 16 Benchmark v1.0.0 - 6.2.3.34

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shell

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