The macOS system must limit consecutive failed log on attempts to three.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-259428	APPL-14-000022	SV-259428r958388_rule		Medium

Description

The macOS must be configured to limit the number of failed log on attempts to a maximum of three. When the maximum number of failed attempts is reached, the account must be locked for a period of time after. This rule protects against malicious users attempting to gain access to the system via brute-force hacking methods. Satisfies: SRG-OS-000021-GPOS-00005,SRG-OS-000329-GPOS-00128

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

Details

Check Text (C-63167r940904_chk)

Verify the macOS system is configured to limit consecutive failed log on attempts to three with the following command:

/usr/bin/pwpolicy -getaccountpolicies 2> /dev/null | /usr/bin/tail +2 | /usr/bin/xmllint --xpath '//dict/key[text()="policyAttributeMaximumFailedAuthentications"]/following-sibling::integer[1]/text()' - | /usr/bin/awk '{ if ($1 <= 3) {print "yes"} else {print "no"}}'

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

Fix Text (F-63075r940905_fix)

Configure the macOS system to limit consecutive failed log on attempts to three by installing the "com.apple.mobiledevice.passwordpolicy" configuration profile or by a directory service.