cyberstrikeus 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