CVE-2023-38171 — Remote Denial of Service Vulnerability in...

HIGH

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

Published October 10, 2023Updated June 3, 2024Source: osv

Summary

### 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.

Advisory Timeline

First published October 10, 2023 (1097 days ago).
Last revised June 3, 2024 — 237 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

NuGet

Update Microsoft.Native.Quic.MsQuic.Schannel to 2.2.3 or later

dotnet add package Microsoft.Native.Quic.MsQuic.Schannel --version 2.2.3

NuGet

Update Microsoft.Native.Quic.MsQuic.OpenSSL to 2.2.3 or later

dotnet add package Microsoft.Native.Quic.MsQuic.OpenSSL --version 2.2.3

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (2)

Affects 1 ecosystem: nuget (2).

Package	Ecosystem	Affected	Fixed In
Microsoft.Native.Quic.MsQuic.Schannel	nuget	1.8.0	2.2.3
Microsoft.Native.Quic.MsQuic.OpenSSL	nuget	1.8.0	2.2.3

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CWE-400
Uncontrolled Resource ConsumptionMITRE
CWE-476
NULL Pointer DereferenceMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 7.5 score means for each attack dimension.

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Frequently Asked Questions

What is CVE-2023-38171?: Remote Denial of Service Vulnerability in Microsoft.Native.Quic.MsQuic.Schannel This vulnerability has been assigned a severity rating of HIGH (CVSS score: 7.5/10).
How do I check if my project is affected by CVE-2023-38171?: CVE-2023-38171 affects Microsoft.Native.Quic.MsQuic.Schannel and Microsoft.Native.Quic.MsQuic.OpenSSL. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2023-38171 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score

7.5

High exploitability or significant impact. Prioritize remediation within days.

Also Known As

GHSA-xh5m-8qqp-c5x7

BIT-dotnet-2023-38171

BIT-dotnet-sdk-2023-38171

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