Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS14aDVtLThxcXAtYzV4N84AA2X0

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

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.

Permalink: https://github.com/advisories/GHSA-xh5m-8qqp-c5x7
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS14aDVtLThxcXAtYzV4N84AA2X0
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: 7 months ago
Updated: 6 months ago

CVSS Score: 7.5
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Identifiers: GHSA-xh5m-8qqp-c5x7, CVE-2023-38171
References:

• https://github.com/microsoft/msquic/security/advisories/GHSA-xh5m-8qqp-c5x7
• https://nvd.nist.gov/vuln/detail/CVE-2023-38171
• https://github.com/microsoft/msquic/commit/3226cff07d22662f16fc98d605656860e64cd343
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-38171
• https://github.com/advisories/GHSA-xh5m-8qqp-c5x7

Repository: https://github.com/microsoft/msquic
Blast Radius: 1.0

Affected Packages