TMA-ROS1-2.2.7

Ensure NFS and RPC are not enabled

MediumLevel 1Automatedros

Description

The Network File System (NFS) is one of the first and most widely distributed file systems in the UNIX environment. It provides the ability for systems to mount file systems of other servers through the network. The audit requires the NFS/RPC unit(s) nfs-server, rpcbind 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 nfs-server rpcbind; 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 commands to disable nfs and rpcbind: # systemctl --now disable nfs-server # systemctl --now disable rpcbind

Properties

Operating systems: Any
Tags: rosros1melodicservices
Reference: CIS ROS Melodic Benchmark v1.0.0 - 2.2.7 Ensure NFS and RPC are 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