TMA-ROS1-1.5.1

Ensure permissions on bootloader config are configured

MoyenneNiveau 1Automatiséeros

Description

The grub configuration file contains information on boot settings and passwords for unlocking boot options. The grub configuration is usually grub.cfg stored in /boot/grub/. The audit requires /boot/grub/grub.cfg owned by root:root with no group or other permissions. Host-level control from the CIS ROS Melodic benchmark (Ubuntu 18.04 robot hosts); run as root.

Méthode de vérification

Méthode d'audit: Commande shell

shell

[ -e /boot/grub/grub.cfg ] || { echo '/boot/grub/grub.cfg not found'; exit 1; }
set -- $(stat -Lc '%a %u %g' /boot/grub/grub.cfg) || exit 1
m=$((8#$1)); [ $((m & ~8#0700)) -eq 0 ] || { echo "/boot/grub/grub.cfg mode $1 exceeds 0700"; exit 1; }
[ "$2" = 0 ] || { echo "/boot/grub/grub.cfg uid $2"; exit 1; }
case " 0 " in *" $3 "*) echo compliant ;; *) echo "/boot/grub/grub.cfg gid $3" ;; esac

Sortie attendue: compliant

Méthode de correction

Méthode de correction: Recommandation ou correctif d'infrastructure

Run the following commands to set permissions on your grub configuration: # chown root:root /boot/grub/grub.cfg # chmod og-rwx /boot/grub/grub.cfg

Propriétés

Systèmes d'exploitation: Tous
Étiquettes: rosros1melodicsystem
Référence: CIS ROS Melodic Benchmark v1.0.0 - 1.5.1 Ensure permissions on bootloader config are configured

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 ros