CVE-2023-36435: MsQuic Remote Denial of Service Vulnerability

CVE-2023-36435 · Severity: low · CVSS 3.1 · Published 2023-10-10

MsQuic Remote Denial of Service Vulnerability

Technologies: Microsoft.Native.Quic.MsQuic.OpenSSL (NuGet), Microsoft.Native.Quic.MsQuic.Schannel (NuGet). Vendors: NuGet.

Quick answers

Is CVE-2023-36435 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2023-36435 being exploited in the wild.
How severe is CVE-2023-36435?
Low severity, with a CVSS score of 3.1, published 10 October 2023.
Which products and versions are affected?
Microsoft.Native.Quic.MsQuic.OpenSSL (NuGet) ECOSYSTEM:introduced=0,fixed=2.2.3; Microsoft.Native.Quic.MsQuic.Schannel (NuGet) ECOSYSTEM:introduced=0,fixed=2.2.3.
Is there a fix for CVE-2023-36435?
Yes. Microsoft.Native.Quic.MsQuic.OpenSSL (NuGet): upgrade to 2.2.3 or later; Microsoft.Native.Quic.MsQuic.Schannel (NuGet): upgrade to 2.2.3 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2023-36435?
Check whether you run Microsoft.Native.Quic.MsQuic.OpenSSL (NuGet) or Microsoft.Native.Quic.MsQuic.Schannel (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

  • Microsoft.Native.Quic.MsQuic.OpenSSL (NuGet): upgrade to 2.2.3 or later
    dotnet add package Microsoft.Native.Quic.MsQuic.OpenSSL --version 2.2.3
  • Microsoft.Native.Quic.MsQuic.Schannel (NuGet): upgrade to 2.2.3 or later
    dotnet add package Microsoft.Native.Quic.MsQuic.Schannel --version 2.2.3

Affected products

  • Microsoft.Native.Quic.MsQuic.OpenSSL (NuGet) ECOSYSTEM:introduced=0,fixed=2.2.3
  • Microsoft.Native.Quic.MsQuic.Schannel (NuGet) ECOSYSTEM:introduced=0,fixed=2.2.3

Identifiers

  • CVE-2023-36435
  • GHSA-fr44-546p-7xcp

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