NixOS must take action when allocated audit record storage volume reaches 75 percent of the repository maximum audit record storage capacity.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-268103 | SRG-OS-000046-GPOS-00022 | ANIX-00-000420 | SV-268103r1039197_rule | 2024-10-25 | 1 |
| Description |
|---|
| If security personnel are not notified immediately when storage volume reaches 75 percent utilization, they are unable to plan for audit record storage capacity expansion. |
| ℹ️ Check |
|---|
| Verify NixOS takes action when allocated audit record storage volume reaches 75 percent of the repository maximum audit record storage capacity with the following commands: $ sudo grep -w space_left /etc/audit/auditd.conf space_left = 25% If the value of the "space_left" keyword is not set to "25%" or if the line is commented out, this is a finding. |
| ✔️ Fix |
|---|
| Configure the operating system to initiate an action to notify the system administrator (SA) and information system security officer (ISSO) (at a minimum) when allocated audit record storage volume reaches 75 percent of the repository maximum audit record storage. Add or update the 'environment.etc."audit/auditd.conf".text' configuration in /etc/nixos/configuration.nix to include the following: environment.etc."audit/auditd.conf".text = [ '' space_left = 25% '' ]; Rebuild the NixOS configuration with the following command: $ sudo nixos-rebuild switch |