From Canonical Ubuntu 16.04 Security Technical Implementation Guide
Part of SRG-OS-000037-GPOS-00015
Associated with: CCI-000130 CCI-000135 CCI-000169 CCI-000172 CCI-002884
Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one.
Verify the Ubuntu operating system generates an audit record when successful/unsuccessful modifications to the "lastlog" file occur. Check that the following calls are being audited by performing the following command to check the file system rules in "/etc/audit/audit.rules": # sudo grep -w lastlog /etc/audit/audit.rules -w /var/log/lastlog -p wa -k logins If the command does not return a line, or the line is commented out, this is a finding.
Configure the audit system to generate an audit event for any successful/unsuccessful modifications to the "lastlog" file occur. Add or update the following rules in the "/etc/audit/audit.rules" file: -w /var/log/lastlog -p wa -k logins The audit daemon must be restarted for the changes to take effect. To restart the audit daemon, run the following command: # sudo systemctl restart auditd.service
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