NixOS system configuration file directories must have a mode of "0755" or less permissive.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-268121 | ANIX-00-000670 | SV-268121r1131046_rule | CCI-000171 | medium |
| Description | ||||
| Without the capability to restrict the roles and individuals that can select which events are audited, unauthorized personnel may be able to prevent the auditing of critical events. Misconfigured audits may degrade the system's performance by overwhelming the audit log. Misconfigured audits may also make it more difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. | ||||
| STIG | Date | |||
| Anduril NixOS Security Technical Implementation Guide | 2025-08-19 | |||
Related Frameworks
4 paths across 3 frameworks
Related Frameworks
NIST 800-531 mapping
AU-12
1.00
- DISA · V1R2 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
NIST 800-1712 mappings
3.3.1
1.00
- DISA · V1R2 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
- NIST · Rev 2 (Feb 2020, errata Jan 2021) · nist_800_171_app_d · equivalent
3.3.2
1.00
- DISA · V1R2 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
- NIST · Rev 2 (Feb 2020, errata Jan 2021) · nist_800_171_app_d · equivalent
CCI1 mapping
CCI-000171
1.00
- DISA · V1R2 · disa_xccdf · related
Details
Check Text (C-268121r1131046_chk)
Verify that the NixOS audit configuration directories have a mode of "755" or less permissive with the following commands:
$ sudo find -L /etc/audit -type d -exec stat -L -c "%a %n" {} \;
755 /etc/audit
If the audit configuration files have a mode more permissive than "755", this is a finding.
Fix Text (F-71948r1131045_fix)
Update the NixOS config, typically stored either in /etc/nixos/configuration.nix or /etc/nixos/flake.nix, to use a mode of 755 or less for directories under /etc/audit.
Rebuild and switch to the new NixOS configuration:
$ sudo nixos-rebuild switch