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-002132 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 audit records for all account creations, modifications, disabling, and termination events that affect "/etc/passwd". Check the auditing rules in "/etc/audit/audit.rules" with the following command: # sudo grep /etc/passwd /etc/audit/audit.rules -w /etc/passwd -p wa -k audit_rules_usergroup_modification If the command does not return a line, or the line is commented out, this is a finding.
Configure the Ubuntu operating system to generate audit records for all account creations, modifications, disabling, and termination events that affect "/etc/passwd". Add or update the following file system rule to "/etc/audit/audit.rules": -w /etc/passwd -p wa -k identity 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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