The advisory discusses best practices for configuring SSO across different VLANs, which does not present a direct vulnerability but emphasizes the importance of secure configuration to avoid potential misconfigurations that could lead to security issues.
The setup involves a homelab with two VLANs, where the goal is to implement SSO using Authentik across both networks. The configuration requires specific network adjustments and security considerations.
Affected Systems
- Proxmox
- traefik reverse proxy
- Authentik
Affected Versions: All versions relevant for the described setup
Remediation
- Ensure proper firewall rules are in place to restrict access from DMZ (vm-external) to Homelab (vm-internal) specifically for Authentik's SSO service.
- Configure Traefik instances with secure settings, ensuring that only necessary endpoints are exposed and that all communications use encryption.
- Regularly update Proxmox host and VMs with the latest security patches.
Stack Impact
This setup impacts services like traefik for reverse proxying and potentially affects overall network segmentation and security configurations within a homelab environment.