TMA-COS-5.3.1.1

Ensure password expiration is 365 days or less

AltaNivel 2Automatizadacos

Descripción

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.

Cómo se verifica

Método de auditoría: Comando de 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

Salida esperada: compliant

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

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>

Propiedades

Sistemas operativos: Cualquiera
Etiquetas: authcontainer-optimized-oscos
Referencia: CIS Google Container-Optimized OS Benchmark v1.2.0 - 5.3.1.1 Ensure password expiration is 365 days or less

Verificar este host

Ejecute esto en un equipo que tenga permiso para auditar. El escaneo es de solo lectura.

shell

tmaegis scan --target cos --level 2