Ensure squashfs kernel module is not available

Méthode de vérification

Méthode d'audit: Commande shell

m=squashfs; found=$(find /lib/modules/$(uname -r)/kernel /usr/lib/modules/$(uname -r)/kernel -path "*/squashfs*" 2>/dev/null | head -n1); if [ -z "$found" ]; then echo compliant; exit 0; fi; lsmod | awk '{print $1}' | grep -Fxq -- "${m//-/_}" && { echo "$m is loaded"; exit 0; }; cfg=$(modprobe --showconfig 2>/dev/null); printf '%s\n' "$cfg" | grep -Pq -- "^\h*blacklist\h+${m//-/_}\b" || { echo "$m is not blacklisted"; exit 0; }; printf '%s\n' "$cfg" | grep -Pq -- "^\h*install\h+${m//-/_}\h+(/usr)?/bin/(true|false)\b" || { echo "$m install is not disabled"; exit 0; }; echo compliant

Sortie attendue

compliant

Méthode de correction

Méthode de correction: Recommandation ou correctif d'infrastructure

Run the following to unload and disable the squashfs kernel module. This can also be done by running the script included below. Run the following commands to unload the squashfs kernel module: # modprobe -r squashfs 2>/dev/null # rmmod squashfs 2>/dev/null Perform the following to disable the squashfs kernel module: Create a file ending in .conf with install squashfs /bin/false in the /etc/modprobe.d/ directory Example: # printf '\n%s\n' "install squashfs /bin/false" >> squashfs.conf Create a file ending in .conf with blacklist squashfs in the /etc/modprobe.d/ directory Example: # printf '\n%s\n' "blacklist squashfs" >> squashfs.conf Optional remediation script: This script will perform the …

Vérifier cet hôte

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

tmaegis scan --target linux --level 2