TMA-ROS1-2.2.12

Ensure Samba is not enabled

MediumLevel 1Automatedros

Description

The Samba daemon allows system administrators to configure their Linux systems to share file systems and directories with Windows desktops. Samba will advertise the file systems and directories via the Server Message Block (SMB) protocol. Windows desktop users will be able to mount these directories and file systems as letter drives on their systems. The audit requires the Samba unit(s) smbd not to be enabled or active (systemctl). Host-level control from the CIS ROS Melodic benchmark (Ubuntu 18.04 robot hosts); run as root.

How it is checked

Audit method: Shell command

shell

command -v systemctl >/dev/null 2>&1 || exit 1
bad=0
for u in smbd; do
  s=$(systemctl is-enabled "$u" 2>/dev/null)
  case "$s" in enabled|enabled-runtime|alias|indirect) echo "$u is $s"; bad=1 ;; esac
  systemctl is-active --quiet "$u" 2>/dev/null && { echo "$u is active"; bad=1; }
done
[ "$bad" -eq 0 ] && echo compliant

Expected output: compliant

How it is fixed

Fix method: Guidance or infrastructure patch

Run the following command to disable Samba: # systemctl --now disable smbd

Properties

Operating systems: Any
Tags: rosros1melodicservices
Reference: CIS ROS Melodic Benchmark v1.0.0 - 2.2.12 Ensure Samba is not enabled

Check this host

Run this on a machine you are allowed to audit. The scan is read-only.

shell

tmaegis scan --target ros