cyberstrikeus 4.1.8 Ensure login and logout events are collected (Scored)
Profile Applicability
- Level 2 - Server
- Level 2 - Workstation
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 maintain 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
Run the following commands:
grep logins /etc/audit/audit.rules
auditctl -l | grep logins
Expected Result
Verify output of both includes:
-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
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
Notes: Reloading the auditd config to set active settings may require a system reboot.
Default Value
Not configured by default.
References
- CIS Controls v6.1 - 5.5 Log Failed Administrative Login Attempts
- CIS Controls v6.1 - 16.10 Profile User Account Usage And Monitor For Anomalies
- CIS Controls v6.1 - 16.4 Automatically Log Off Users After Standard Period Of Inactivity
Profile
- Level 2 - Server
- Level 2 - Workstation