Ubuntu OS must enforce a delay of at least four seconds between logon prompts following a failed logon attempt.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-275640 | RIIM-OS-412010 | SV-275640r1147970_rule | CCI-000366 | low |
| Description | ||||
| Limiting the number of logon attempts over a certain time interval reduces the chances that an unauthorized user may gain access to an account. | ||||
| STIG | Date | |||
| Riverbed NetIM OS Security Technical Implementation Guide | 2025-10-02 | |||
Details
Check Text (C-275640r1147970_chk)
Verify Ubuntu OS 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 Text (F-79647r1147969_fix)
Configure the Ubuntu OS 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