AlmaLinux OS 9 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-269217 | SRG-OS-000480-GPOS-00227 | ALMA-09-015640 | SV-269217r1050099_rule | 2025-02-20 | 1 |
| Description |
|---|
| Increasing the time between a failed authentication attempt and prompting to re-enter credentials helps to slow a single-threaded brute force attack. Satisfies: SRG-OS-000480-GPOS-00227, SRG-OS-000480-GPOS-00226 |
| ℹ️ Check |
|---|
| Verify AlmaLinux OS 9 enforces a delay of at least four seconds between console logon prompts following a failed logon attempt with the following command: $ grep -i fail_delay /etc/login.defs FAIL_DELAY 4 If the value of "FAIL_DELAY" is not set to "4" or greater, or the line is commented out, this is a finding. |
| ✔️ Fix |
|---|
| Configure the AlmaLinux OS 9 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 |