Information
The audit system must be configured to record enforcement actions of attempts to modify file attributes (fm).
Enforcement actions are the methods or mechanisms used to prevent unauthorized changes to configuration settings. One common and effective enforcement action method is using access restrictions (i.e., modifications to a file by applying file permissions).
This configuration ensures that audit lists include events in which enforcement actions attempts to modify a file.
Without auditing the enforcement of access restrictions, it is difficult to identify attempted attacks, as there is no audit trail available for forensic investigation.
Satisfies: SRG-OS-000057-GPOS-00027,SRG-OS-000058-GPOS-00028,SRG-OS-000059-GPOS-00029,SRG-OS-000064-GPOS-00033,SRG-OS-000256-GPOS-00097,SRG-OS-000257-GPOS-00098,SRG-OS-000258-GPOS-00099,SRG-OS-000365-GPOS-00152,SRG-OS-000392-GPOS-00172,SRG-OS-000458-GPOS-00203,SRG-OS-000462-GPOS-00206,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
Solution
Configure the macOS system to audit all changes of object attributes with the following command:
/usr/bin/grep -qE "^flags.*fm" /etc/security/audit_control || /usr/bin/sed -i.bak '/^flags/ s/$/,fm/' /etc/security/audit_control;/usr/sbin/audit -s
Item Details
Category: AUDIT AND ACCOUNTABILITY, CONFIGURATION MANAGEMENT, MAINTENANCE
References: 800-53|AU-9, 800-53|AU-12c., 800-53|CM-5(1), 800-53|MA-4(1)(a), CAT|II, CCI|CCI-000162, CCI|CCI-000163, CCI|CCI-000164, CCI|CCI-000172, CCI|CCI-001493, CCI|CCI-001494, CCI|CCI-001495, CCI|CCI-001814, CCI|CCI-002884, Rule-ID|SV-259463r941011_rule, STIG-ID|APPL-14-001021, Vuln-ID|V-259463
Control ID: 2ad90289cc1947979bea034e13cf810b30d3e5ee03beedc7ce20266a55e770b5