Ensure the audit configuration is immutable

低等級 2自動化linux

說明

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.

檢查方式

稽核方法: Shell 指令

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

預期輸出: compliant

修補方式

修補方法: 操作指南或基礎設施修補檔

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 '%s\n' "" "-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

屬性

作業系統: rocky-8
標籤: cis-convertedlinux
參考資料: CIS Rocky Linux 8 Benchmark v3.0.0 - 6.3.3.21

檢查此主機

請在您有權稽核的機器上執行此指令。掃描為唯讀操作。

shell

tmaegis scan --target linux --level 2