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APPL-26-001020 The macOS system must be configured to audit all deletions of object attributes.

DISA STIG library V1R4
All changes in this version
first version loaded CAT II

Maps to AU-9, AU-12, CM-5(1), MA-4(1) via CCI-000162, CCI-000163, CCI-000164, CCI-000172, CCI-001493, CCI-001494, CCI-001495, CCI-003938, CCI-002884

Title

The macOS system must be configured to audit all deletions of object attributes.

Control

Verify the macOS system is configured to audit all deletions of object attributes with the following command: /usr/bin/awk -F':' '/^flags/ { print $NF }' /etc/security/audit_control | /usr/bin/tr ',' '\n' | /usr/bin/grep -Ec '\-fd' If the result is not "1", this is a finding.

Discussion

The audit system must be configured to record enforcement actions of attempts to delete file attributes (fd). 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., denying modifications to a file by applying file permissions). This configuration ensures that audit lists include events in which enforcement actions prevent attempts to delete a file. Without auditing the enforcement of access restrictions, it is difficult to identify attempted attacks because no audit trail is 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-000463-GPOS-00207, SRG-OS-000465-GPOS-00209, SRG-OS-000466-GPOS-00210, SRG-OS-000467-GPOS-00211, SRG-OS-000468-GPOS-00212

Related controls

CCI-000162, CCI-000163, CCI-000164, CCI-000172, CCI-001493, CCI-001494, CCI-001495, CCI-002884, CCI-003938

Fix

Configure the macOS system to audit all deletions of object attributes with the following command: /usr/bin/grep -qE "^flags.*-fd" /etc/security/audit_control || /usr/bin/sed -i.bak '/^flags/ s/$/,-fd/' /etc/security/audit_control;/usr/sbin/audit -s