Ensure udf kernel module is not available

Cómo se verifica

Método de auditoría: Comando de shell

m=udf; found=$(find /lib/modules/$(uname -r)/kernel /usr/lib/modules/$(uname -r)/kernel -path "*/udf*" 2>/dev/null | head -n1); if [ -z "$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

Salida esperada

compliant

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

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

Verificar este host

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

tmaegis scan --target linux --level 2