Ensure password expiration is 365 days or less

ÉlevéeNiveau 2Automatiséecos

Description

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.

Méthode de vérification

Méthode d'audit: Commande shell

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

Sortie attendue: compliant

Méthode de correction

Méthode de correction: Recommandation ou correctif d'infrastructure

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>

Propriétés

Systèmes d'exploitation: Tous
Étiquettes: authcontainer-optimized-oscos
Référence: CIS Google Container-Optimized OS Benchmark v1.2.0 - 5.3.1.1 Ensure password expiration is 365 days or less

Vérifier cet hôte

Exécutez cette commande sur une machine que vous êtes autorisé à auditer. L'analyse est en lecture seule.

shell

tmaegis scan --target cos --level 2