Ensure access to /etc/crontab is configured

MediaNivel 1Automatizadalinux

Descripción

The /etc/crontab file is used by cron to control its own jobs. The commands in this item make sure that root is the user and group owner of the file and that only the owner can access the file.

Cómo se verifica

Método de auditoría: Comando de shell

shell

alt0() { s=$(stat -Lc '%a %u %g' /etc/crontab 2>&1) || { echo "step1: $s"; return 1; }; set -- $s; m=$((8#$1)); [ $((m & ~0600)) -eq 0 ] && [ "$2" = 0 ] && [ "$3" = 0 ] || { echo "step1: /etc/crontab is mode $1 uid $2 gid $3, want 600 or stricter, uid 0, gid 0"; return 1; }; }; if alt0; then echo compliant; fi

Salida esperada: compliant

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

- IF - cron is installed on the system: Run the following commands to set ownership and permissions on /etc/crontab: # chown root:root /etc/crontab # chmod og-rwx /etc/crontab

Propiedades

Sistemas operativos: alinux-3
Etiquetas: cis-convertedlinux
Referencia: CIS Alibaba Cloud Linux 3 Benchmark v2.0.0 - 2.4.1.2

Verificar este host

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

shell

tmaegis scan --target linux