CVE-2022-21155: Fernhill SCADA Uncontrolled Resource Consumption
First published: Tue Apr 12 2022(Updated: )
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.
Credit: ics-cert@hq.dhs.gov
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Fernhill Software SCADA Server | ||
| Fernhill Software SCADA Server | <=3.77 | |
| Linux Kernel | ||
| macOS | ||
| Microsoft Windows Operating System |
Remedy
Fernhill recommends users upgrade to Version 3.78 or later: https://www.fernhillsoftware.com/download.php For more information about this issue and how to apply the upgrade, please contact Fernhill online (https://www.fernhillsoftware.com/about-contact.php) or via email (support@fernhillsoftware.com).
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2022-21155?
CVE-2022-21155 is considered a high-severity vulnerability because it can cause the Fernhill SCADA Server to crash, impacting operational continuity.
How do I fix CVE-2022-21155?
To fix CVE-2022-21155, upgrade to a version of the Fernhill SCADA Server later than 3.77 that addresses this vulnerability.
Which versions of the Fernhill SCADA Server are affected by CVE-2022-21155?
CVE-2022-21155 affects the Fernhill SCADA Server Version 3.77 and earlier.
What impact does CVE-2022-21155 have on the Fernhill SCADA Server?
CVE-2022-21155 can lead to an unexpected exit of the server process, disrupting service availability.
Is CVE-2022-21155 present in supported operating systems like Windows or Linux?
CVE-2022-21155 specifically affects the Fernhill SCADA Server software and is not directly tied to the operating systems.
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