Automation Controller must install security-relevant software updates within the time period directed by an authoritative source (e.g. IAVM, CTOs, DTMs, and STIGs).

Severity
Group ID
Group Title
Version
Rule ID
Date
STIG Version
mediumV-256911SRG-APP-000456-AS-000266APAS-AT-000122SV-256911r961683_rule2024-06-102
Description
Security relevant software updates must be installed within the timeframes directed by an authoritative source in order to maintain the integrity and confidentiality of the system and its organizational assets.
ℹ️ Check
As a system administrator for each Automation Controller host inspect the status of the DNF Automatic timer: systemctl status dnf-automatic.timer If "Active: active" is not included in the output, this is a finding. Inspect the configuration of DNF Automatic: grep apply_updates /etc/dnf/automatic.conf If "apply_updates = yes" is not displayed, this is a finding.
✔️ Fix
Install and enable DNF Automatic: dnf install dnf-automatic (run the install) systemctl enable --now dnf-automatic.timer Modify /etc/dnf/automatic.conf and set "apply_updates = yes".