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Not in CISA KEV
HIGH severity

Remote Denial of Service Vulnerability in Microsoft QUICGHSA-2x7m-gf85-3745

HIGHFix: microsoft/msquic@5d070d6

GHSA-2x7m-gf85-3745 is a high-severity (CVSS 7.5) vulnerability in Microsoft.Native.Quic.MsQuic.OpenSSL. A fix is available for Microsoft.Native.Quic.MsQuic.OpenSSL — see the affected versions and patch details below.

Published
Updated
Affected
6 pkgs
Patched
6 / 6
Exploits
None indexed
Exploitation data as of Dec 1, 2024 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

6 pkgs affected
.NETMicrosoft.Native.Quic.MsQuic.OpenSSL.NETMicrosoft.Native.Quic.MsQuic.Schannel.NETMicrosoft.Native.Quic.MsQuic.Schannel.NETMicrosoft.Native.Quic.MsQuic.Schannel.NETMicrosoft.Native.Quic.MsQuic.OpenSSL.NETMicrosoft.Native.Quic.MsQuic.OpenSSL

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects NuGet packages — download data is not available via public APIs for these ecosystems.

Description

Impact

The MsQuic server will continue to leak memory until no more is available, resulting in a denial of service.

Patches

The following patch was made:

Workarounds

Beyond upgrading to the patched versions, there is no other workaround.

MSRC CVE Info

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-26190

Affected Packages

6 total 6 fixed
EcosystemPackageVulnerable rangeFix
.NETNuGetMicrosoft.Native.Quic.MsQuic.OpenSSLall versions2.1.12dotnet add package Microsoft.Native.Quic.MsQuic.OpenSSL --version 2.1.12
.NETNuGetMicrosoft.Native.Quic.MsQuic.Schannel≥ 2.2.0&&< 2.2.72.2.7dotnet add package Microsoft.Native.Quic.MsQuic.Schannel --version 2.2.7
.NETNuGetMicrosoft.Native.Quic.MsQuic.Schannel≥ 2.3.0&&< 2.3.52.3.5dotnet add package Microsoft.Native.Quic.MsQuic.Schannel --version 2.3.5
.NETNuGetMicrosoft.Native.Quic.MsQuic.Schannelall versions2.1.12dotnet add package Microsoft.Native.Quic.MsQuic.Schannel --version 2.1.12
.NETNuGetMicrosoft.Native.Quic.MsQuic.OpenSSL≥ 2.2.0&&< 2.2.72.2.7dotnet add package Microsoft.Native.Quic.MsQuic.OpenSSL --version 2.2.7
.NETNuGetMicrosoft.Native.Quic.MsQuic.OpenSSL≥ 2.3.0&&< 2.3.52.3.5dotnet add package Microsoft.Native.Quic.MsQuic.OpenSSL --version 2.3.5

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for Microsoft.Native.Quic.MsQuic.OpenSSL, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update Microsoft.Native.Quic.MsQuic.OpenSSL to 2.1.12 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-2x7m-gf85-3745 is resolved across your whole dependency graph.

  3. Workarounds

    Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Frequently Asked Questions

### Impact The MsQuic server will continue to leak memory until no more is available, resulting in a denial of service. ### Patches The following patch was made: - Fix Memory Leak from Multiple Decodes of TP - https://github.com/microsoft/msquic/commit/5d070d661c45979946615289e92bb6b822efe9e9 ### Workarounds Beyond upgrading to the patched versions, there is no other workaround. ### MSRC CVE Info https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-26190
O3 Security · Impact-Aware SCA

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Remote Denial of Service Vulnerability in Microsoft QUIC