Cloud Vulnerability DB
A community-led vulnerabilities database
Vulnerability DatabaseCVE-2023-6249
CVE-2023-6249:
NixOS vulnerability analysis and mitigation
Overview
CVE-2023-6249 affects .NET 6.0 implementations, specifically related to the Kestrel web server component. The vulnerability was initially fixed in .NET 6.0 packages for Red Hat Enterprise Linux 7 via RHSA-2023:5142 (SDK 6.0.122 and Runtime 6.0.22), but was inadvertently reintroduced in subsequent versions (Red Hat Advisory).
Technical details
The vulnerability is related to the handling of client certificates in the .NET Kestrel web server component. The issue was reintroduced when the fix was not included in the upstream SDK 6.0.123 and Runtime 6.0.23, creating a security regression. The vulnerability has been re-fixed in .NET SDK 6.0.124 and .NET Runtime 6.0.24 (Red Hat Advisory).
Impact
When exploited, this vulnerability can lead to a Denial of Service condition when processing client certificates using .NET Kestrel (Red Hat Advisory).
Mitigation and workarounds
Users should update to .NET SDK 6.0.124 and .NET Runtime 6.0.24 or later versions, which contain the re-implemented fix for this vulnerability. The update is available through the standard package management systems for affected platforms (Red Hat Advisory).
Additional resources
Source: This report was generated using AI
Related NixOS vulnerabilities:
Free Vulnerability Assessment
Benchmark your Cloud Security Posture
Evaluate your cloud security practices across 9 security domains to benchmark your risk level and identify gaps in your defenses.
Additional Wiz resources
Get a personalized demo
Ready to see Wiz in action?
"Best User Experience I have ever seen, provides full visibility to cloud workloads."
David EstlickCISO
"Wiz provides a single pane of glass to see what is going on in our cloud environments."
Adam FletcherChief Security Officer
"We know that if Wiz identifies something as critical, it actually is."
Greg PoniatowskiHead of Threat and Vulnerability Management