cis-ubuntu1204-v110-5-1-1

name	cis-ubuntu1204-v110-5-1-1
description	Ensure NIS is not installed
category	cis-os-hardening
version	1.1.0
author	cyberstrike-official
tags	["cis","ubuntu",12.04,"linux","nis","legacy-services","package-management"]
cis_id	5.1.1
cis_benchmark	CIS Ubuntu 12.04 LTS Server Benchmark v1.1.0
tech_stack	["ubuntu","linux"]
cwe_ids	[]
chains_with	[]
prerequisites	[]
severity_boost	{}

5.1.1 Ensure NIS is not installed (Scored)

Profile Applicability

• Level 1

Description

The Network Information Service (NIS), formerly known as Yellow Pages, is a client-server directory service protocol used to distribute system configuration files.

Rationale

The NIS service is inherently an insecure system that has been vulnerable to DOS attacks, buffer overflows and has poor authentication for querying NIS maps. NIS generally has been replaced by such protocols as Lightweight Directory Access Protocol (LDAP). It is recommended that the service be removed.

Audit Procedure

Using Command Line

dpkg -s nis

Expected Result

Ensure package status is not-installed or dpkg returns no info is available.

Remediation

Using Command Line

Uninstall the nis package:

apt-get purge nis

Default Value

Not installed by default on Ubuntu 12.04 LTS Server.

References

• CIS Ubuntu 12.04 LTS Server Benchmark v1.1.0

Profile

Level 1 - Scored