CVE-2020-12834 Auth bypass in n/a
Unauthenticated attackers can execute arbitrary code via the JSON API due to default auto-login settings on Homematic CCU devices.
- 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-2020-12834?
CVE-2020-12834 is a critical authentication bypass vulnerability in n/a, published on 15 May 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
eQ-3 Homematic Central Control Unit (CCU)2 through 2.51.6 and CCU3 through 3.51.6 allow Remote Code Execution in the JSON API Method ReGa.runScript, by unauthenticated attackers with access to the web interface, due to the default auto-login feature being enabled during first-time setup (or factory reset).
Weakness: CWE-276
Which versions are affected by CVE-2020-12834?
It affects 2 products.
Products include Eq-3 Ccu3 Firmware, Eq-3 Homematic Ccu2 Firmware.
How do I fix CVE-2020-12834?
No fix has been published for CVE-2020-12834 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-2020-12834 being exploited?
There is no known exploitation of CVE-2020-12834 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-j3ww-xcqh-98r2.