STIGQter: STIG Summary: Anduril NixOS Security Technical Implementation Guide Version: 1 Release: 2 Benchmark Date: 01 Oct 2025:

NixOS must enforce 24 hours/one day as the minimum password lifetime.

DISA Rule

SV-268132r1131069_rule

Vulnerability Number

V-268132

Group Title

SRG-OS-000075-GPOS-00043

Rule Version

ANIX-00-000790

Severity

CAT II

CCI(s)

• CCI-004066 - For password-based authentication, enforce organization-defined composition and complexity rules.

Weight

10

Fix Recommendation

Configure NixOS operating system to enforce 24 hours/one day as the minimum password lifetime.

Add the following Nix code to the NixOS Configuration, usually located in /etc/nixos/configuration.nix or /etc/nixos/flake.nix:

security.loginDefs.settings.PASS_MIN_DAYS = "1";

Rebuild and switch to the new NixOS configuration:
$ sudo nixos-rebuild switch

Check Contents

Verify NixOS enforces 24 hours/one day as the minimum password lifetime with the following command:

$ grep PASS_MIN_DAYS /etc/login.defs

PASS_MIN_DAYS 1

If PASS_MIN_DAYS_1 is not present, is commented out, or is a value different from 1, this is a finding.

Vulnerability Number

V-268132

Documentable

False

Rule Version

ANIX-00-000790

Severity Override Guidance

Verify NixOS enforces 24 hours/one day as the minimum password lifetime with the following command:

$ grep PASS_MIN_DAYS /etc/login.defs

PASS_MIN_DAYS 1

If PASS_MIN_DAYS_1 is not present, is commented out, or is a value different from 1, this is a finding.

Check Content Reference

M

Target Key

5658