Amazon Linux 2023 must maintain an account lock until the locked account is released by an administrator.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-274157 | SRG-OS-000329-GPOS-00128 | AZLX-23-002470 | SV-274157r1120459_rule | 2025-07-15 | 1 |
| 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. |
| ℹ️ Check |
|---|
| 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 |
|---|
| 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 |