cis-ubuntu1204-v110-6-11

name	cis-ubuntu1204-v110-6-11
description	Ensure IMAP and POP server is not enabled
category	cis-os-hardening
version	1.1.0
author	cyberstrike-official
tags	["cis","ubuntu",12.04,"linux","imap","pop","dovecot","mail","attack-surface"]
cis_id	6.11
cis_benchmark	CIS Ubuntu 12.04 LTS Server Benchmark v1.1.0
tech_stack	["ubuntu","linux"]
cwe_ids	[]
chains_with	[]
prerequisites	[]
severity_boost	{}

6.11 Ensure IMAP and POP server is not enabled (Not Scored)

Profile Applicability

• Level 1

Description

Dovecot is an open source IMAP and POP3 server for Linux based systems.

Rationale

Unless POP3 and/or IMAP servers are to be provided to this server, it is recommended that the service be deleted to reduce the potential attack surface.

Audit Procedure

Using Command Line

Ensure no start conditions listed for dovecot:

initctl show-config dovecot dovecot

Expected Result

No start conditions should be listed for dovecot.

Remediation

Using Command Line

Remove or comment out start lines in /etc/init/dovecot.conf:

sed -i 's/^start/#start/' /etc/init/dovecot.conf

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 - Not Scored