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GHSA-9q94-v7ch-mxqw

Insufficient Session Expiration and TOCTOU Race Condition in OPC FOundation UA .Net Standard

Source: GitHub Advisory Database (reviewed) Moderate CVE-2020-8867

Packages

EcosystemPackageAffectedFixed in
NuGet OPCFoundation.NetStandard.Opc.Ua < 1.4.359.31 1.4.359.31

Details

As written in the advisory (Markdown source, shown as plain text).

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.

References

External links from the advisory. They lead to third-party sites.