Amazon Linux 2023 must enforce a delay of at least four seconds between logon prompts following a failed logon attempt.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-274144 | SRG-OS-000480-GPOS-00226 | AZLX-23-002405 | SV-274144r1120420_rule | 2025-07-15 | 1 |
| Description |
|---|
| Increasing the time between a failed authentication attempt and re-prompting to enter credentials helps to slow a single-threaded brute force attack. |
| ℹ️ Check |
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| Verify Amazon Linux 2023 enforces a delay of at least four seconds between console logon prompts following a failed logon attempt with the following command: $ sudo grep -i fail_delay /etc/login.defs FAIL_DELAY 4 If the value of "FAIL_DELAY" is not set to "4" or greater, the line is commented out, or the line is missing, this is a finding. |
| ✔️ Fix |
|---|
| Configure Amazon Linux 2023 to enforce a delay of at least four seconds between logon prompts following a failed console logon attempt. Modify the "/etc/login.defs" file to set the "FAIL_DELAY" parameter to "4" or greater: FAIL_DELAY 4 |