cis-ubuntu1204-v110-8-1-8

name	cis-ubuntu1204-v110-8-1-8
description	Collect Login and Logout Events
category	cis-os-hardening
version	1.1.0
author	cyberstrike-official
tags	["cis","ubuntu",12.04,"linux","logging","auditd","login","logout","authentication"]
cis_id	8.1.8
cis_benchmark	CIS Ubuntu 12.04 LTS Server Benchmark v1.1.0
tech_stack	["ubuntu","linux"]
cwe_ids	[]
chains_with	[]
prerequisites	[]
severity_boost	{}

8.1.8 Collect Login and Logout Events (Scored)

Profile Applicability

• Level 2

Description

Monitor login and logout events. The parameters below track changes to files associated with login/logout events. The file /var/log/faillog tracks failed events from login. The file /var/log/lastlog maintains records of the last time a user successfully logged in. The file /var/log/tallylog maintains records of failures via the pam_tally2 module.

Rationale

Monitoring login/logout events could provide a system administrator with information associated with brute force attacks against user logins.

Audit Procedure

Using Command Line

Perform the following to determine if login and logout events are recorded.

grep logins /etc/audit/audit.rules

Expected Result

-w /var/log/faillog -p wa -k logins
-w /var/log/lastlog -p wa -k logins
-w /var/log/tallylog -p wa -k logins

Remediation

Using Command Line

Add the following lines to the /etc/audit/audit.rules file:

-w /var/log/faillog -p wa -k logins
-w /var/log/lastlog -p wa -k logins
-w /var/log/tallylog -p wa -k logins
# Execute the following command to restart auditd
# pkill -HUP -P 1 auditd

Default Value

By default, login and logout events are not audited.

References

• CIS Ubuntu 12.04 LTS Server Benchmark v1.1.0

Profile

Level 2 - Scored