Moderate: .NET 7.0 security update
Summary
ALSA-2023:6246: Moderate: .NET 7.0 security update. Affects aspnetcore-runtime-7.0 versions < 7.0.13-1.el9_2. Fixed in 7.0.13-1.el9_2. How to fix ↓
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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 (CVE-2023-36799) in the aspnetcore-runtime-7.0 package allows an attacker to cause a denial of service by exploiting a flaw in the handling of client certificates in .NET Kestrel. By sending specially crafted client certificates, an attacker can trigger a condition that consumes excessive resources, leading to a denial of service. This vulnerability has a moderate severity rating.
How To Fix
Minimum fixed version
7.0.13-1.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 known workaround for this vulnerability. Updating to the latest versions of the affected packages is the recommended solution.
Conclusion
In conclusion, the aspnetcore-runtime-7.0 package in .NET is vulnerable to a denial of service issue when using .NET Kestrel with client certificates. To mitigate this vulnerability, it is recommended to update to the latest versions of the affected packages. If you have any further questions or need assistance with vulnerability remediation, please 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 systems.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file to the playground and it will analyze the dependencies for any known vulnerabilities.
There are no known public exploits for this vulnerability at the time of this advisory. However, it is still important to apply the necessary updates to mitigate the risk.
For more details about the vulnerability, including the impact, CVSS score, acknowledgments, and related information, refer to the CVE page(s) listed in the References section of the original advisory.
You can find more information about the security updates in the release notes of the updated versions of the affected packages. These release notes provide details about the security fixes and any other changes included in the updates.
Related vulnerabilities
Recent vulnerabilities recorded for aspnetcore-runtime-7.0.
