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NixOS must store only encrypted representations of passwords.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-268130ANIX-00-000770SV-268130r1131065_ruleCCI-004062high
Description
Passwords need to be protected at all times, and encryption is the standard method for protecting passwords. If passwords are not encrypted, they can be plainly read (i.e., clear text) and easily compromised.
STIGDate
Anduril NixOS Security Technical Implementation Guide2025-08-19

Related Frameworks

1 mapping across 4 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (3) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

IAC-10Authenticator Management
0.50
IAC-10.1Password-Based Authentication
0.50
IAC-10.4Automated Support For Password Strength
0.50
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (58) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AC-10Concurrent Session Control
1.00
AC-17(10)Authenticate Remote Commands
1.00
AC-2(1)Automated System Account Management
1.00
AC-2(10)Shared and Group Account Credential Change
1.00
AC-2(11)Usage Conditions
1.00
AC-2(2)Automated Temporary and Emergency Account Management
1.00
AC-2(3)Disable Accounts
1.00
AC-2(4)Automated Audit Actions
1.00
AC-3Access Enforcement
1.00
AC-3(4)Discretionary Access Control
1.00

+48 more (top 10 by confidence shown)

NIST 800-1710 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (4) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

3.5.10
1.00
3.5.7
1.00
3.5.8
1.00
3.5.9
1.00
CCI1 mapping
CCI-004062
1.00

Details

Check Text (C-268130r1131065_chk)

Verify NixOS stores only encrypted representations of passwords with the following command: $ grep ENCRYPT_METHOD /etc/login.defs ENCRYPT_METHOD SHA512 If "ENCRYPT_METHOD" does not equal SHA512 or greater, is commented out, or is missing, this is a finding.

Fix Text (F-71957r1131064_fix)

Configure NixOS to store only encrypted representations of passwords. Add the following Nix code to the NixOS Configuration, usually located in /etc/nixos/configuration.nix or /etc/nixos/flake.nix: security.loginDefs.settings.ENCRYPT_METHOD = "SHA512"; Rebuild and switch to the new NixOS configuration: $ sudo nixos-rebuild switch