Vulnerability 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 Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Loxone | Miniserver Gen 1 Firmware | < 11.1.9.3 |
| Loxone | Miniserver Gen 1 | - |
Related Weaknesses (CWE)
References
- https://iot-lab-fh-ooe.github.io/loxone_clouddns_schwachstelle/ExploitThird Party Advisory
- https://iot-lab-fh-ooe.github.io/loxone_clouddns_vulnerability/ExploitThird Party Advisory
- https://www.loxone.com/dede/sicherheit-cloud-dns/ProductVendor Advisory
- https://www.loxone.com/enen/security-cloud-dns/Vendor Advisory
- https://iot-lab-fh-ooe.github.io/loxone_clouddns_schwachstelle/ExploitThird Party Advisory
- https://iot-lab-fh-ooe.github.io/loxone_clouddns_vulnerability/ExploitThird Party Advisory
- https://www.loxone.com/dede/sicherheit-cloud-dns/ProductVendor Advisory
- https://www.loxone.com/enen/security-cloud-dns/Vendor Advisory
FAQ
What is CVE-2020-27488?
CVE-2020-27488 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 attac...
How severe is CVE-2020-27488?
CVE-2020-27488 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2020-27488?
Check the references section above for vendor advisories and patch information. Affected products include: Loxone Miniserver Gen 1 Firmware, Loxone Miniserver Gen 1.