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

NixOS audit configuration files must have a mode of 444 or less permissive.

DISA Rule

SV-268120r1131043_rule

Vulnerability Number

V-268120

Group Title

SRG-OS-000063-GPOS-00032

Rule Version

ANIX-00-000660

Severity

CAT II

CCI(s)

CCI-000171 - Allow organization-defined personnel or roles to select the event types that are to be logged by specific components of the system.

Weight

Fix Recommendation

Configure NixOS audit configuration and service files to have a mode of 444 or less permissive with the following command:

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

Check Contents

Verify that the NixOS audit configuration and service files have a mode of 444 or less permissive with the following commands:

$ sudo find -L /etc/audit -type f -exec stat -L -c "%a %n" {} \;
$ sudo find -L /etc/systemd/system -iname "audit*" -type f -exec stat -L -c "%a %n" {} \;
$ stat -c '%a %n' $(realpath /etc/systemd/system/audit*.service)

444 /etc/audit/auditd.conf
444 /etc/systemd/system/audit.service
444 /etc/systemd/system/auditd.service
444 /etc/systemd/system/basic.target.wants/audit.service
444 /etc/systemd/system/sysinit.target.wants/audit.service
444 /nix/store/dr3i90b3n1fb06fr1gw12jfg9wb8dkrc-unit-auditd.service/auditd.service
444 /nix/store/dc6s6z7ykbmq70i5z8cff0agwsmp9jhm-unit-audit.service/audit.service

If the audit configuration files have a mode more permissive than 444, this is a finding.

Vulnerability Number

V-268120

Documentable

False

Rule Version

ANIX-00-000660

Severity Override Guidance

Check Content Reference

Target Key

5658