APPL-26-001044 The macOS system must be configured to audit all authorization and authentication events.
All changes in this version
Maps to AU-12, CM-5(1), MA-4(1) via CCI-003938, CCI-002884, CCI-000172
Title
The macOS system must be configured to audit all authorization and authentication events.
Control
Verify the macOS system is configured to audit login events with the following command: /usr/bin/awk -F':' '/^flags/ { print $NF }' /etc/security/audit_control | /usr/bin/tr ',' '\n' | /usr/bin/grep -Ec 'aa' If the result is not "1", this is a finding.
Discussion
The auditing system must be configured to flag authorization and authentication (aa) events. Authentication events contain information about the identity of a user, server, or client. Authorization events contain information about permissions, rights, and rules. If audit records do not include aa events, it is difficult to identify incidents and correlate incidents to subsequent events. Audit records can be generated from various components within the information system (e.g., via a module or policy filter). Satisfies: SRG-OS-000365-GPOS-00152, SRG-OS-000392-GPOS-00172, SRG-OS-000458-GPOS-00203, SRG-OS-000463-GPOS-00207, SRG-OS-000465-GPOS-00209, SRG-OS-000466-GPOS-00210, SRG-OS-000467-GPOS-00211, SRG-OS-000468-GPOS-00212, SRG-OS-000471-GPOS-00215, SRG-OS-000471-GPOS-00216, SRG-OS-000475-GPOS-00220, SRG-OS-000477-GPOS-00222
Related controls
CCI-000172, CCI-002884, CCI-003938
Fix
Configure the macOS system to audit login events with the following command: /usr/bin/grep -qE "^flags.*[^-]aa" /etc/security/audit_control || /usr/bin/sed -i.bak '/^flags/ s/$/,aa/' /etc/security/audit_control; /usr/sbin/audit -s