RHEL 8 passwords must have a 24 hours/1 day minimum password lifetime restriction in /etc/shadow.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-230364	RHEL-08-020180	SV-230364r1017176_rule		Medium

Description

Enforcing a minimum password lifetime helps to prevent repeated password changes to defeat the password reuse or history enforcement requirement. If users are allowed to immediately and continually change their password, the password could be repeatedly changed in a short period of time to defeat the organization's policy regarding password reuse.

STIG	Date
Red Hat Enterprise Linux 8 Security Technical Implementation Guide	2024-11-25

Details

Check Text (C-33033r567838_chk)

Check whether the minimum time period between password changes for each user account is one day or greater.

$ sudo awk -F: '$4 < 1 {print $1 " " $4}' /etc/shadow

If any results are returned that are not associated with a system account, this is a finding.

Fix Text (F-33008r567839_fix)

Configure non-compliant accounts to enforce a 24 hours/1 day minimum password lifetime:

$ sudo chage -m 1 [user]