Restrict at/cron to Authorized Users

AltaNivel 1Automatizadasolaris

Descripción

The cron.allow and at.allow files contain a list of users who are allowed to run the crontab and at commands to submit jobs to be run at scheduled intervals. On many systems, only the system administrator needs the ability to schedule jobs. Even though a given user is not listed in cron.allow, cron jobs can still be run as that user. Audit: cron.deny and at.deny must be absent, cron.allow must list root, at.allow must exist and be empty.

Cómo se verifica

Método de auditoría: Comando de shell

shell

r=compliant; [ -e /etc/cron.d/cron.deny ] && r="cron.deny exists"; [ -e /etc/cron.d/at.deny ] && r="at.deny exists"; grep -qx root /etc/cron.d/cron.allow 2>/dev/null || r="root not in cron.allow"; if [ -f /etc/cron.d/at.allow ]; then n=$(wc -l < /etc/cron.d/at.allow); [ "$n" -eq 0 ] || r="at.allow is not empty"; else r="at.allow missing"; fi; echo "$r"

Salida esperada: compliant

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

Perform the following to implement the recommended state: # mv /etc/cron.deny /etc/cron.deny.cis # mv /etc/at.deny /etc/at.deny.cis # echo root > /etc/cron.allow # cp /dev/null at.allow # chown root:root cron.allow at.allow # chmod 400 cron.allow at.allow Note that the root/superuser is always allowed to use the at command and is not required to be specifically listed in at.allow.

Propiedades

Sistemas operativos: Cualquiera
Etiquetas: solarisaccounts
Referencia: CIS Oracle Solaris 11.4 Benchmark v1.1.0 - 6.3 Restrict at/cron to Authorized Users

Verificar este host

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

shell

tmaegis scan --target solaris