RHEL 9 must configure the use of the pam_faillock.so module in the /etc/pam.d/system-auth file.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-258095	RHEL-09-611030	SV-258095r926272_rule		Medium

Description
If the pam_faillock.so module is not loaded, the system will not correctly lockout accounts to prevent password guessing attacks.

STIG	Date
Red Hat Enterprise Linux 9 Security Technical Implementation Guide	2023-12-01

Details

Check Text ( C-61836r926270_chk )
Verify the pam_faillock.so module is present in the "/etc/pam.d/system-auth" file: $ grep pam_faillock.so /etc/pam.d/system-auth auth required pam_faillock.so preauth auth required pam_faillock.so authfail account required pam_faillock.so If the pam_faillock.so module is not present in the "/etc/pam.d/system-auth" file with the "preauth" line listed before pam_unix.so, this is a finding.

Fix Text (F-61760r926271_fix)
Configure RHEL 9 to include the use of the pam_faillock.so module in the /etc/pam.d/system-auth file. Add/modify the appropriate sections of the "/etc/pam.d/system-auth" file to match the following lines: Note: The "preauth" line must be listed before pam_unix.so. auth required pam_faillock.so preauth auth required pam_faillock.so authfail account required pam_faillock.so