TMA-COS-5.2.2

Ensure password reuse is limited

高レベル 2自動cos

説明

The /etc/security/opasswd file stores the users' old passwords and can be checked to ensure that users are not recycling recent passwords. Forcing users not to reuse their past 5 passwords make it less likely that an attacker will be able to guess the password. Note that these change only apply to accounts configured on the local system.

チェック方法

監査方法: シェルコマンド

shell

bad=0; for p in /etc/pam.d/system-password /etc/pam.d/system-auth; do grep -Pq "^\h*password\h+[^#\n\r]+\h+pam_pwhistory\.so\h+([^#\n\r]+\h+)?remember=([5-9]|[1-9][0-9]+)\b" $p 2>/dev/null || 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 remembered password history to conform to site policy. Many distributions provide tools for updating PAM configuration, consult your documentation for details. If no tooling is provided edit the appropriate /etc/pam.d/ configuration file and add or modify the pam_pwhistory.so or pam_unix.so lines to include the remember option: password required pam_pwhistory.so remember=5 password required pam_unix.so remember=5

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 - 5.2.2 Ensure password reuse is limited

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