CVE-2020-8867: Insufficient Session Expiration and TOCTOU Race Condition in OPC FOundation UA .Net Standard

CVE-2020-8867 · Severity: low · CVSS 3.1 · Published 2021-08-02

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

Technologies: OPCFoundation.NetStandard.Opc.Ua (NuGet). Vendors: NuGet.

Quick answers

Is CVE-2020-8867 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2020-8867 being exploited in the wild.
How severe is CVE-2020-8867?
Low severity, with a CVSS score of 3.1, published 2 August 2021.
Which products and versions are affected?
OPCFoundation.NetStandard.Opc.Ua (NuGet) ECOSYSTEM:introduced=0,fixed=1.4.359.31.
Is there a fix for CVE-2020-8867?
Yes. OPCFoundation.NetStandard.Opc.Ua (NuGet): upgrade to 1.4.359.31 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2020-8867?
Check whether you run OPCFoundation.NetStandard.Opc.Ua (NuGet) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • OPCFoundation.NetStandard.Opc.Ua (NuGet): upgrade to 1.4.359.31 or later
    dotnet add package OPCFoundation.NetStandard.Opc.Ua --version 1.4.359.31

Affected products

  • OPCFoundation.NetStandard.Opc.Ua (NuGet) ECOSYSTEM:introduced=0,fixed=1.4.359.31

Identifiers

  • CVE-2020-8867
  • GHSA-9q94-v7ch-mxqw

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