CVE-2021-27662 KT-1 Capture-replay
Attackers can bypass authentication on Johnson Controls KT-1 door controllers by replaying recorded TCP packets.
- 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-2021-27662?
CVE-2021-27662 is a high-severity vulnerability in Johnson Controls KT-1, published on 15 Sep 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The KT-1 door controller is susceptible to replay or man-in-the-middle attacks where an attacker can record and replay TCP packets. This issue affects Johnson Controls KT-1 all versions up to and including 3.01
Weakness: CWE-294
Which versions are affected by CVE-2021-27662?
It affects 1 product.
Products include Johnsoncontrols Kantech Kt-1 Door Controller Firmware.
How do I fix CVE-2021-27662?
No fix has been published for CVE-2021-27662 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-27662 being exploited?
There is no known exploitation of CVE-2021-27662 in the wild and no public exploit code.
Sources
Also known as GHSA-fv2j-64xc-r4hr.