Ensure changes to system administration scope (sudoers) is collected

낮음레벨 2자동linux

설명

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.

점검 방법

감사 방식: 셸 명령

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

예상 출력: compliant

조치 방법

조치 방식: 가이드 또는 인프라 패치

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

속성

운영 체제: sles-12
태그: cis-convertedlinux
참고 자료: CIS SUSE Linux Enterprise 12 Benchmark v3.2.0 - 4.1.14

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