Ensure changes to system administration scope (sudoers) is collected

低レベル 2自動linux

説明

Monitor scope changes for system administrators. If the system has been properly configured to force system administrators to log in as themselves first and then use the sudo command to execute privileged commands, it is possible to monitor changes in scope. The file /etc/sudoers or a file in the /etc/sudoers.d directory will be written to when the file or its attributes have changed. Note: Reloading the auditd config to set active settings may require a system reboot.

チェック方法

監査方法: シェルコマンド

shell

alt0() { command -v grep >/dev/null 2>&1 || { echo "step1: grep not installed"; return 1; }; o=$(bash -c 'grep scope /etc/audit/rules.d/*.rules' 2>&1); printf '%s\n' "$o" | tr -s ' \t' '  ' | sed 's/^ //;s/ $//' | grep -Fxq -- '/etc/audit/rules.d/scope.rules:-w /etc/sudoers -p wa -k scope' || { echo step1: missing '/etc/audit/rules.d/scope.rules:-w /etc/sudoers -p wa -k scop'; return 1; }; printf '%s\n' "$o" | tr -s ' \t' '  ' | sed 's/^ //;s/ $//' | grep -Fxq -- '/etc/audit/rules.d/scope.rules:-w /etc/sudoers.d/ -p wa -k scope' || { echo step1: missing '/etc/audit/rules.d/scope.rules:-w /etc/sudoers.d/ -p wa -k s'; return 1; }; command -v auditctl >/dev/null 2>&1 || { echo "step2: auditctl not installed"; return 1; }; command -v grep >/dev/null 2>&1 || { echo "step2: grep not installed"; return 1; }; o=$(bash -c 'auditctl -l | grep scope' 2>&1); printf '%s\n' "$o" | tr -s ' \t' '  ' | sed 's/^ //;s/ $//' | grep -Fxq -- '-w /etc/sudoers -p wa -k scope' || { echo step2: missing '-w /etc/sudoers -p wa -k scope'; return 1; }; printf '%s\n' "$o" | tr -s ' \t' '  ' | sed 's/^ //;s/ $//' | grep -Fxq -- '-w /etc/sudoers.d -p wa -k scope' || { echo step2: missing '-w /etc/sudoers.d -p wa -k scope'; return 1; }; }; if alt0; then echo compliant; fi

期待される出力: compliant

修正方法

修正方法: ガイダンスまたは IaC パッチ

Edit or create a file in the /etc/audit/rules.d/ directory ending in .rules Example: vi /etc/audit/rules.d/scope.rules and add the following lines: -w /etc/sudoers -p wa -k scope -w /etc/sudoers.d/ -p wa -k scope

プロパティ

オペレーティングシステム: sles-12
タグ: cis-convertedlinux
参照: CIS SUSE Linux Enterprise 12 Benchmark v3.2.0 - 4.1.14

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