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.NET NuGet

GHSA-xh5m-8qqp-c5x7

HIGH

GHSA-xh5m-8qqp-c5x7 is a high-severity (CVSS 7.5) NULL Pointer Dereference vulnerability in Microsoft.Native.Quic.MsQuic.Schannel. O3 Security confirms whether GHSA-xh5m-8qqp-c5x7 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

Remote Denial of Service Vulnerability in Microsoft.Native.Quic.MsQuic.Schannel

Also known asBIT-dotnet-2023-38171BIT-dotnet-sdk-2023-38171CVE-2023-38171
Published
Oct 10, 2023
Updated
Jun 3, 2024
Affected
2 pkgs
Patched
2 / 2
Exploits
None indexed

Blast Radius

2 pkgs affected
.NETMicrosoft.Native.Quic.MsQuic.Schannel.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 application or process will crash, resulting in a denial of service.

Patches

The following patch was made:

Workarounds

Beyond upgrading to the patched versions, there is no other workaround. You must upgrade or disable MsQuic functionality.

Affected Packages

2 total 2 fixed
EcosystemPackageVulnerable rangeFix
.NETNuGetMicrosoft.Native.Quic.MsQuic.Schannelall versions2.2.3
.NETNuGetMicrosoft.Native.Quic.MsQuic.OpenSSLall versions2.2.3

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.Schannel. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

  2. Fix

    Update Microsoft.Native.Quic.MsQuic.Schannel to 2.2.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-xh5m-8qqp-c5x7 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

  4. How O3 protects you

    O3 pinpoints whether GHSA-xh5m-8qqp-c5x7 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-xh5m-8qqp-c5x7. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

### Impact The MsQuic server application or process will crash, resulting in a denial of service. ### Patches The following patch was made: - Don't Allow Version Negotiation Packets for Server Connections - https://github.com/microsoft/msquic/commit/3226cff07d22662f16fc98d605656860e64cd343 ### Workarounds Beyond upgrading to the patched versions, there is no other workaround. You must upgrade or disable MsQuic functionality.
O3 Security · Impact-Aware SCA

Is GHSA-xh5m-8qqp-c5x7 in your dependencies?

O3 detects GHSA-xh5m-8qqp-c5x7 across NuGet dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.