cis-ubuntu1604-v200-2-1-4

name	cis-ubuntu1604-v200-2-1-4
description	Ensure CUPS is not installed
category	cis-networking
version	2.0.0
author	cyberstrike-official
tags	["cis","ubuntu","linux","ubuntu-16.04","services"]
cis_id	2.1.4
cis_benchmark	CIS Ubuntu Linux 16.04 LTS Benchmark v2.0.0
tech_stack	["ubuntu","linux"]
cwe_ids	[]
chains_with	[]
prerequisites	[]
severity_boost	{}

2.1.4 Ensure CUPS is not installed (Automated)

Description

The Common Unix Print System (CUPS) provides the ability to print to both local and network printers. A system running CUPS can also accept print jobs from remote systems and print them to local printers. It also provides a web based remote administration capability.

Rationale

If the system does not need to print jobs or accept print jobs from other systems, it is recommended that CUPS be removed to reduce the potential attack surface.

Impact

Removing CUPS will prevent printing from the system, a common task for workstation systems.

Audit Procedure

Command Line

Run the following command to verify cups is not installed:

dpkg -s cups | grep -E '(Status:|not installed)'

Expected Result

dpkg-query: package 'cups' is not installed and no information is available

Remediation

Command Line

Run one of the following commands to remove cups:

apt purge cups

Default Value

cups is not installed on minimal server installations.

References

1. More detailed documentation on CUPS is available at the project homepage at http://www.cups.org.
2. CIS Controls v7 - 9.2 Ensure Only Approved Ports, Protocols and Services Are Running

Profile

• Level 1 - Server
• Level 2 - Workstation