The macOS system must configure audit log files to not contain access control lists (ACLs).

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-268432	APPL-15-000030	SV-268432r1034236_rule		Medium

Description

The audit log files must not contain ACLs. This rule ensures that audit information and audit files are configured to be readable and writable only by system administrators, thereby preventing unauthorized access, modification, and deletion of files. Satisfies: SRG-OS-000057-GPOS-00027, SRG-OS-000058-GPOS-00028, SRG-OS-000059-GPOS-00029, SRG-OS-000256-GPOS-00097, SRG-OS-000257-GPOS-00098, SRG-OS-000258-GPOS-00099

STIG	Date
Apple macOS 15 (Sequoia) Security Technical Implementation Guide	2025-05-05

Details

Check Text (C-72462r1034234_chk)

Verify the macOS system is configured without ACLs applied to log files with the following command:

/bin/ls -le $(/usr/bin/grep '^dir' /etc/security/audit_control | /usr/bin/awk -F: '{print $2}') | /usr/bin/awk '{print $1}' | /usr/bin/grep -c ":"

If the result is not "0", this is a finding.

Fix Text (F-72363r1034235_fix)

Configure the macOS system without ACLs applied to log files with the following command:

/bin/chmod -RN /var/audit