CVE-2020-27488 Information

Description

Loxone Miniserver devices with firmware before 11.1 (aka 11.1.9.3) are unable to use an authentication method that is based on the \signature of the update package.\ Therefore these devices (or attackers who are spoofing these devices) can continue to use an unauthenticated cloud service for an indeterminate time period (possibly forever). Once an individual device’s firmware is updated and authentication occurs once the cloud service recategorizes the device so that authentication is subsequently always required and spoofing cannot occur.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

https://iot-lab-fh-ooe.github.io/loxone_clouddns_vulnerability/ https://iot-lab-fh-ooe.github.io/loxone_clouddns_schwachstelle/ https://www.loxone.com/dede/sicherheit-cloud-dns/ https://www.loxone.com/enen/security-cloud-dns/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8