CVE-2022-21155 Fernhill SCADA Uncontrolled Resource Consumption
A specially crafted packet can cause the Fernhill SCADA Server process to exit, resulting in a denial of service for industrial control systems.
- 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-2022-21155?
CVE-2022-21155 is a high-severity denial of service vulnerability in Fernhill SCADA Server , published on 12 Apr 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A specially crafted packet sent to the Fernhill SCADA Server Version 3.77 and earlier may cause an exception, causing the server process (FHSvrService.exe) to exit.
Which versions are affected by CVE-2022-21155?
It affects 1 product.
Products include Fernhillsoftware Scada Server.
How do I fix CVE-2022-21155?
No fix has been published for CVE-2022-21155 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2022-21155 being exploited?
There is no known exploitation of CVE-2022-21155 in the wild and no public exploit code.
Sources
Also known as GHSA-983v-fgvf-4jjc.