cis-ubuntu1604-v200-2-1-6

name	cis-ubuntu1604-v200-2-1-6
description	Ensure LDAP server is not installed
category	cis-networking
version	2.0.0
author	cyberstrike-official
tags	["cis","ubuntu","linux","ubuntu-16.04","services"]
cis_id	2.1.6
cis_benchmark	CIS Ubuntu Linux 16.04 LTS Benchmark v2.0.0
tech_stack	["ubuntu","linux"]
cwe_ids	[]
chains_with	[]
prerequisites	[]
severity_boost	{}

2.1.6 Ensure LDAP server is not installed (Automated)

Description

The Lightweight Directory Access Protocol (LDAP) was introduced as a replacement for NIS/YP. It is a service that provides a method for looking up information from a central database.

Rationale

If the system will not need to act as an LDAP server, it is recommended that the software be removed to reduce the potential attack surface.

Audit Procedure

Command Line

Run the following command to verify slapd is not installed:

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

Expected Result

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

Remediation

Command Line

Run one of the following commands to remove slapd:

apt purge slapd

Default Value

slapd is not installed on minimal server installations.

References

1. For more detailed documentation on OpenLDAP, go to the project homepage at http://www.openldap.org.
2. CIS Controls v7 - 9.2 Ensure Only Approved Ports, Protocols and Services Are Running

Profile

• Level 1 - Server
• Level 1 - Workstation