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

NixOS must uniquely identify and must authenticate organizational users (or processes acting on behalf of organizational users).

DISA Rule

SV-268135r1039293_rule

Vulnerability Number

V-268135

Group Title

SRG-OS-000104-GPOS-00051

Rule Version

ANIX-00-000840

Severity

CAT II

CCI(s)

• CCI-000764 - Uniquely identify and authenticate organizational users and associate that unique identification with processes acting on behalf of those users.
• CCI-000804 - Uniquely identify and authenticate non-organizational users or processes acting on behalf of non-organizational users.

Weight

10

Fix Recommendation

Configure the NixOS to uniquely identify and authenticate nonorganizational users by editing the file "/etc/passwd" and provide each interactive user account that has a duplicate UID with a unique UID.

Check Contents

Verify the NixOS operating system contains no duplicate User IDs (UIDs) for interactive users with the following command:

$ awk -F ":" 'list[$3]++{print $1, $3}' /etc/passwd

If output is produced and the accounts listed are interactive user accounts, this is a finding.

Vulnerability Number

V-268135

Documentable

False

Rule Version

ANIX-00-000840

Severity Override Guidance

Verify the NixOS operating system contains no duplicate User IDs (UIDs) for interactive users with the following command:

$ awk -F ":" 'list[$3]++{print $1, $3}' /etc/passwd

If output is produced and the accounts listed are interactive user accounts, this is a finding.

Check Content Reference

M

Target Key

5658