Vulnerability Discussion

The audit service must be configured to immediately print messages to the
console or email administrator users when an auditing failure occurs.

It is critical for the appropriate personnel to be made aware immediately if a system is at risk of
failing to process audit logs as required. Without a real-time alert, security personnel may be unaware
of a potentially harmful failure in the auditing system's capability, and system operation may be
adversely affected.

Satisfies: SRG-OS-000047-GPOS-00023,SRG-OS-000344-GPOS-00135

Check

Verify the macOS system is configured to produce audit failure notification with the
following command:

/usr/bin/grep -c "logger -s -p" /etc/security/audit_warn

If the result is not "1", this is a finding.

Fix

Configure the macOS system to produce audit failure notification with
the following command:

/usr/bin/sed -i.bak 's/logger -p/logger -s -p/' /etc/security/audit_warn; /usr/sbin/audit -s