CVE-2020-27488 Auth bypass in n/a
Attackers can spoof Loxone Miniserver devices to access unauthenticated cloud services indefinitely until the device firmware is updated and authenticated once.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-27488?
CVE-2020-27488 is a critical authentication bypass vulnerability in n/a, published on 13 Jan 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
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.
Weakness: CWE-287
Which versions are affected by CVE-2020-27488?
It affects 1 product.
Products include Loxone Miniserver Gen 1 Firmware.
How do I fix CVE-2020-27488?
No fix has been published for CVE-2020-27488 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2020-27488 being exploited?
There is no known exploitation of CVE-2020-27488 in the wild and no public exploit code.
Sources
Also known as GHSA-gx5r-j32f-r3vc.