TMA-ROS1-2.3.1

Ensure NIS Client is not installed

MediumLevel 1Automatedros

Description

The Network Information Service (NIS), formerly known as Yellow Pages, is a client-server directory service protocol used to distribute system configuration files. The NIS client was used to bind a machine to an NIS server and receive the distributed configuration files. The audit requires the nis package not to be installed. 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 dpkg-query >/dev/null 2>&1 || exit 1
bad=0
for p in nis; do
  s=$(dpkg-query -W -f='${Status}' "$p" 2>/dev/null)
  case "$s" in *' installed') echo "$p is installed"; bad=1 ;; esac
done
[ "$bad" -eq 0 ] && echo compliant

Expected output: compliant

How it is fixed

Fix method: Guidance or infrastructure patch

Uninstall nis: apt purge nis

Properties

Operating systems: Any
Tags: rosros1melodicservices
Reference: CIS ROS Melodic Benchmark v1.0.0 - 2.3.1 Ensure NIS Client is not installed

Check this host

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

shell

tmaegis scan --target ros