CVE-2020-8867
High
Description
This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of OPC Foundation UA .NET Standard 1.04.358.30. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of sessions. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerability to create a denial-of-service condition against the application. Was ZDI-CAN-10295.
SeverityHigh
CVSS7.5
Exploit probability—
ProductOpcfoundation Unified Architecture .net-standard
PublishedApr 22, 2020
First seenApr 22, 2020
Weakness typeCWE-367CWE-367
How to fix
Update
- OPCFoundation.NetStandard.Opc.Ua1.4.359.31 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| opcfoundation unified_architecture_.net-standard | v ≤ 1.04.358.30 | — |
| OPCFoundation.NetStandard.Opc.UaNuGet | v < 1.4.359.31 | 1.4.359.31 |
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