cis-ubuntu1604-v200-4-4

name	cis-ubuntu1604-v200-4-4
description	Ensure logrotate assigns appropriate permissions
category	cis-logging
version	2.0.0
author	cyberstrike-official
tags	["cis","ubuntu","linux","ubuntu-16.04","logging","rsyslog"]
cis_id	4.4
cis_benchmark	CIS Ubuntu Linux 16.04 LTS Benchmark v2.0.0
tech_stack	["ubuntu","linux"]
cwe_ids	[]
chains_with	[]
prerequisites	[]
severity_boost	{}

CIS Ubuntu Linux 16.04 LTS Benchmark v2.0.0 - Control 4.4

Profile

• Level: 1 - Server
• Level: 1 - Workstation
• Assessment Status: Automated

Description

Log files contain logged information from many services on the system, or on log hosts others as well.

Rationale

It is important to ensure that log files have the correct permissions to ensure that sensitive data is archived and protected.

Impact

None.

Audit Procedure

Run the following command:

Command Line

grep -Es "^\s*create\s+\S+" /etc/logrotate.conf /etc/logrotate.d/* | grep -E -v "\s(0)?[0-6][04]0\s"

Expected Result

Nothing should be returned.

Remediation

Edit /etc/logrotate.conf and update the create line to read 0640 or more restrictive, following local site policy.

Command Line

Example:

# Update the create directive in /etc/logrotate.conf:
create 0640 root utmp

Default Value

The default create directive varies by distribution and logrotate configuration.

References

None.

CIS Controls

Controls Version	Control	IG 1	IG 2	IG 3
v7	14.6 Protect Information through Access Control Lists Protect all information stored on systems with file system, network share, claims, application, or database specific access control lists. These controls will enforce the principle that only authorized individuals should have access to the information based on their need to access the information as a part of their responsibilities.