ZDI-22-1030: (Pwn2Own) Unified Automation OPC UA C++ Improper Update of Reference Count Denial-of-Service Vulnerability
This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Unified Automation OPC UA C++ Demo Server. 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.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Unified Automation OPC UA C++ Demo Server |
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Reference Links
Frequently Asked Questions
What is the severity of ZDI-22-1030?
The severity of ZDI-22-1030 is critical due to its potential to cause a denial-of-service condition.
How do I fix ZDI-22-1030?
To fix ZDI-22-1030, update to the latest version of Unified Automation OPC UA C++ Demo Server where the vulnerability has been patched.
Who is affected by ZDI-22-1030?
ZDI-22-1030 affects installations of Unified Automation OPC UA C++ Demo Server that have not applied the necessary updates.
Can ZDI-22-1030 be exploited remotely?
Yes, ZDI-22-1030 can be exploited remotely without requiring authentication.
What type of vulnerability is ZDI-22-1030?
ZDI-22-1030 is categorized as a denial-of-service vulnerability.
- agent/references
- agent/type
- agent/softwarecombine
- collector/zdi-advisory
- source/ZDI
- alias/ZDI-22-1030
- alias/ZDI-CAN-16927
- alias/CVE-2022-37012
- agent/software-canonical-lookup
- agent/severity
- agent/title
- agent/tags
- agent/event
- agent/description
- agent/source
- vendor/unified automation
- canonical/unified automation opc ua c++ demo server