The macOS system must configure install.log retention to 365.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-259558	APPL-14-004050	SV-259558r958752_rule		Low

Description

The install.log must be configured to require records be kept for an organizational-defined value before deletion, unless the system uses a central audit record storage facility.

STIG	Date
Apple macOS 14 (Sonoma) Security Technical Implementation Guide	2024-12-04

Details

Check Text (C-63297r941294_chk)

Verify the macOS system is configured with install.log retention to 365 with the following command:

/usr/sbin/aslmanager -dd 2>&1 | /usr/bin/awk '/\/var\/log\/install.log/ {count++} /Processing module com.apple.install/,/Finished/ { for (i=1;i<=NR;i++) { if ($i == "TTL" && $(i+2) >= 365) { ttl="True" }; if ($i == "MAX") {max="True"}}} END{if (count > 1) { print "Multiple config files for /var/log/install, manually remove"} else if (ttl != "True") { print "TTL not configured" } else if (max == "True") { print "Max Size is configured, must be removed" } else { print "Yes" }}'

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

Fix Text (F-63205r941295_fix)

Configure the macOS system with install.log retention to 365 with the following command:

/usr/bin/sed -i '' "s/\* file \/var\/log\/install.log.*/\* file \/var\/log\/install.log format='\$$\(Time$$JZ$\) \$Host \$$Sender$\[\$$PID\$\]: \$Message' rotate=utc compress file_max=50M size_only ttl=365/g" /etc/asl/com.apple.install

Note: If there are multiple configuration files in /etc/asl that are set to process the file /var/log/install.log, these files will have to be manually removed.