Moderate: .NET 7.0 security update
Summary
ALSA-2023:5146: Moderate: .NET 7.0 security update. Affects aspnetcore-runtime-7.0 versions < 7.0.11-1.el9_2. Fixed in 7.0.11-1.el9_2. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Habilume
Habit tracker with a companion that grows with you
Complete habits, earn Lume Points, and watch your Lume grow as you stay consistent.
Background
The .NET framework is a managed-software framework that implements a subset of the .NET framework APIs and includes a CLR implementation. It provides a platform for developing and running applications on various operating systems. The affected package, aspnetcore-runtime-7.0, is a component of .NET that is used for running ASP.NET Core applications. It is vulnerable to a security issue that can lead to a denial of service when using .NET Kestrel with client certificates.
Vulnerability Detail
The vulnerability, identified as CVE-2023-36799, allows an attacker to perform a denial of service attack by exploiting a flaw in the .NET Kestrel component when handling client certificates. By sending specially crafted requests, an attacker can cause the Kestrel server to consume excessive resources, leading to a denial of service condition. This vulnerability has a moderate severity rating.
How To Fix
Minimum fixed version
7.0.11-1.el9_2
This is the first release that contains the fix.
sudo dnf update aspnetcore-runtime-7.0Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
There is no specific workaround mentioned for this vulnerability.
Conclusion
The .NET 7.0 security update addresses a moderate severity vulnerability in the aspnetcore-runtime-7.0 package. Users are advised to update their installations to the latest versions (.NET SDK 7.0.111 and .NET Runtime 7.0.11) to mitigate the risk of a denial of service attack. For further support on vulnerability remediation, you can contact DevNack.com.
See every vulnerability recorded for aspnetcore-runtime-7.0 →
FAQ
The vulnerability can be exploited to cause a denial of service, potentially disrupting the availability of affected applications.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your application is affected by this vulnerability. Simply upload your manifest file (e.g., package-lock.json) and the tool will analyze it for any open-source vulnerabilities, including this one.
There is no known exploit available at the time of this advisory. However, it is important to apply the recommended updates to mitigate the risk.
The vulnerability can be exploited by sending specially crafted requests to a .NET Kestrel server that is configured to use client certificates.
For more details about this vulnerability, including the impact, CVSS score, acknowledgments, and related information, refer to the CVE page: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-36799
Related vulnerabilities
Recent vulnerabilities recorded for aspnetcore-runtime-7.0.
Habilume
Habit tracker with a companion that grows with you
Complete habits, earn Lume Points, and watch your Lume grow as you stay consistent.
