Vulnerability · Published Mar 29, 2023 · Assigned by zdi
CVE-2022-37012
High 7.5
In plain English
A high-severity security flaw in OPC UA C++ Demo Server from Unified Automation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.8% (higher than 78% of all known vulnerabilities).
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Unified Automation | OPC UA C++ Demo Server | 1.7.6-537 |
Weakness: CWE-911 · Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H