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APPL-15-001016 The macOS system must configure audit log files to mode 440 or less permissive.

DISA STIG library V1R8
All changes in this version
first version loaded CAT II

Maps to AU-9 via CCI-000162, CCI-000163, CCI-000164, CCI-001493, CCI-001494, CCI-001495

Title

The macOS system must configure audit log files to mode 440 or less permissive.

Control

Verify the macOS system is configured with audit log files set to mode 440 or less with the following command: /bin/ls -l $(/usr/bin/grep '^dir' /etc/security/audit_control | /usr/bin/awk -F: '{print $2}') | /usr/bin/awk '!/-r--r-----|current|total/{print $1}' | /usr/bin/wc -l | /usr/bin/tr -d ' ' If the result is not "0", this is a finding.

Discussion

The audit service must be configured to create log files that are readable only by the root user and group wheel. To achieve this, audit log files must be configured to mode 440 or less permissive to prevent normal users from reading, modifying, or deleting audit logs. 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

Related controls

CCI-000162, CCI-000163, CCI-000164, CCI-001493, CCI-001494, CCI-001495

Fix

Configure the macOS system with audit log files set to mode 440 with the following command: /bin/chmod 440 /var/audit/*