CVE-2022-37012 Denial of service in OPC UA C++ Demo Server
Remote attackers can cause a denial-of-service condition in Unified Automation OPC UA C++ Demo Server by sending crafted messages that corrupt reference counts.
- 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-2022-37012?
CVE-2022-37012 is a high-severity denial of service vulnerability in Unified Automation OPC UA C++ Demo Server, published on 29 Mar 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Unified Automation OPC UA C++ Demo Server 1.7.6-537. Authentication is not required to exploit this vulnerability. The specific flaw exists within the OpcUa_SecureListener_ProcessSessionCallRequest method. A crafted OPC UA message can force the server to incorrectly update a reference count. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-16927.
Weakness: CWE-911
Which versions are affected by CVE-2022-37012?
It affects 1 product.
Products include Unified-Automation Opc Ua C\+\+ Demo Server.
How do I fix CVE-2022-37012?
No fix has been published for CVE-2022-37012 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-2022-37012 being exploited?
There is no known exploitation of CVE-2022-37012 in the wild and no public exploit code.
Other vulnerabilities in Unified Automation OPC UA C++ Demo Server
Sources
Also known as GHSA-5xp2-x7qr-wjrx.