Ensure password expiration is 365 days or less

높음레벨 2자동cos

설명

The PASS_MAX_DAYS parameter in /etc/login.defs allows an administrator to force passwords to expire once they reach a defined age. It is recommended that the PASS_MAX_DAYS parameter be set to less than or equal to 365 days. The window of opportunity for an attacker to leverage compromised credentials or successfully compromise credentials via an online brute force attack is limited by the age of the password. Therefore, reducing the maximum age of a password also reduces an attacker's window of opportunity.

점검 방법

감사 방식: 셸 명령

shell

bad=0; [ -r /etc/shadow ] || exit 1; v=$(awk '/^[[:space:]]*PASS_MAX_DAYS[[:space:]]/{print $2}' /etc/login.defs | tail -1); [ -n "$v" ] && [ "$v" -ge 1 ] && [ "$v" -le 365 ] || bad=1; for x in $(awk -F: '$2 ~ /^[^*!xX]/ && $2 != "" {print ($5==""?"99999":$5)}' /etc/shadow); do [ "$x" -ge 1 ] && [ "$x" -le 365 ] || bad=1; done; [ $bad -eq 0 ] && echo compliant || echo noncompliant

예상 출력: compliant

조치 방법

조치 방식: 가이드 또는 인프라 패치

Set the PASS_MAX_DAYS parameter to conform to site policy in /etc/login.defs : PASS_MAX_DAYS 365 Modify user parameters for all users with a password set to match: # chage --maxdays 365 <user>

속성

운영 체제: 모두
태그: authcontainer-optimized-oscos
참고 자료: CIS Google Container-Optimized OS Benchmark v1.2.0 - 5.3.1.1 Ensure password expiration is 365 days or less

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shell

tmaegis scan --target cos --level 2