Vulnerability · Published Jan 13, 2021 · Assigned by mitre
CVE-2020-27488
Critical 9.8
In plain English
A critical-severity security flaw in the affected software. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.0% (higher than 81% of all known vulnerabilities).
Official 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.
Affected products (as reported)
References
- https://iot-lab-fh-ooe.github.io/loxone_clouddns_schwachstelle/ x_refsource_MISC
- https://www.loxone.com/dede/sicherheit-cloud-dns/ x_refsource_MISC
- https://www.loxone.com/enen/security-cloud-dns/ x_refsource_MISC
- https://iot-lab-fh-ooe.github.io/loxone_clouddns_vulnerability/ x_refsource_MISC