TMA-COS-5.3.1.1

Ensure password expiration is 365 days or less

高レベル 2自動cos

説明

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.

チェック方法

監査方法: シェルコマンド

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

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

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>

プロパティ

オペレーティングシステム: すべて
タグ: authcontainer-optimized-oscos
参照: CIS Google Container-Optimized OS Benchmark v1.2.0 - 5.3.1.1 Ensure password expiration is 365 days or less

このホストをチェック

監査が許可されているマシンで実行してください。スキャンは読み取り専用です。

shell

tmaegis scan --target cos --level 2