NixOS must enforce a delay of at least four seconds between login prompts following a failed login attempt.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-268171 | SRG-OS-000480-GPOS-00226 | ANIX-00-001870 | SV-268171r1039583_rule | 2024-10-25 | 1 |
| Description |
|---|
| Limiting the number of login attempts over a certain time interval reduces the chances that an unauthorized user may gain access to an account. |
| ℹ️ Check |
|---|
| Verify the NixOS operating system enforces a four-second delay between login attempts with the following command: $ grep -I delay /etc/login.defs FAIL_DELAY 4 If "FAIL_DELAY" is not set to "4" or greater, is commented out, or is missing, this is a finding. |
| ✔️ Fix |
|---|
| Configure NixOS operating system to enforce a four-second delay between login attempts. Add the following Nix code to the NixOS Configuration usually located in /etc/nixos/configuration.nix environment.etc."login.defs".text = pkgs.lib.mkForce '' FAIL_DELAY 4 ''; Rebuild the system with the following command: $ sudo nixos-rebuild switch |