Amazon Linux 2023 must maintain an account lock until the locked account is released by an administrator.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-274157 | AZLX-23-002470 | SV-274157r1120459_rule | CCI-002238 | medium |
| Description | ||||
| By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-forcing, is reduced. Limits are imposed by locking the account. | ||||
| STIG | Date | |||
| Amazon Linux 2023 Security Technical Implementation Guide | 2026-02-27 | |||
Details
Check Text (C-274157r1120459_chk)
Verify Amazon Linux 2023 is configured to lock an account until released by an administrator after three unsuccessful logon attempts with the command:
$ grep 'unlock_time =' /etc/security/faillock.conf
unlock_time = 0
If the "unlock_time" option is not set to "0", the line is missing, or commented out, this is a finding.
Fix Text (F-78153r1120458_fix)
Configure Amazon Linux 2023 to lock an account until released by an administrator after three unsuccessful logon attempts with the command:
$ authselect enable-feature with-faillock
Then edit the "/etc/security/faillock.conf" file as follows:
unlock_time = 0