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

NixOS must enforce a minimum 15-character password length.

DISA Rule

SV-268134r1131073_rule

Vulnerability Number

V-268134

Group Title

SRG-OS-000078-GPOS-00046

Rule Version

ANIX-00-000810

Severity

CAT II

CCI(s)

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

Weight

10

Fix Recommendation

Configure NixOS to enforce password complexity.

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

environment.etc."/security/pwquality.conf".text = ''
minlen=15
'';

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

Check Contents

Verify NixOS enforces a minimum 15-character password length with the following command:

$ grep minlen /etc/security/pwquality.conf

minlen=15

If the value of "minlen" is set to less than "15", or is commented out, this is a finding.

Vulnerability Number

V-268134

Documentable

False

Rule Version

ANIX-00-000810

Severity Override Guidance

Verify NixOS enforces a minimum 15-character password length with the following command:

$ grep minlen /etc/security/pwquality.conf

minlen=15

If the value of "minlen" is set to less than "15", or is commented out, this is a finding.

Check Content Reference

M

Target Key

5658