1. Ubuntu Security Notices
  2. USN-6438-1

USN-6438-1: .NET vulnerabilities

Publication date

19 October 2023

Overview

Several security issues were fixed in dotnet6, dotnet7.

Releases

Packages

  • dotnet6 - dotNET CLI tools and runtime
  • dotnet7 - dotNET CLI tools and runtime

Details

Kevin Jones discovered that .NET did not properly process certain
X.509 certificates. An attacker could possibly use this issue to
cause a denial of service. (CVE-2023-36799)

It was discovered that the .NET Kestrel web server did not properly
handle HTTP/2 requests. A remote attacker could possibly use this
issue to cause a denial of service. (CVE-2023-44487)

Kevin Jones discovered that .NET did not properly process certain
X.509 certificates. An attacker could possibly use this issue to
cause a denial of service. (CVE-2023-36799)

It was discovered that the .NET Kestrel web server did not properly
handle HTTP/2 requests. A remote attacker could possibly use this
issue to cause a denial of service. (CVE-2023-44487)

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
23.10 mantic aspnetcore-runtime-6.0 –  6.0.123-0ubuntu1
aspnetcore-runtime-7.0 –  7.0.112-0ubuntu1
dotnet-host –  6.0.123-0ubuntu1
dotnet-host-7.0 –  7.0.112-0ubuntu1
dotnet-hostfxr-6.0 –  6.0.123-0ubuntu1
dotnet-hostfxr-7.0 –  7.0.112-0ubuntu1
dotnet-runtime-6.0 –  6.0.123-0ubuntu1
dotnet-runtime-7.0 –  7.0.112-0ubuntu1
dotnet-sdk-6.0 –  6.0.123-0ubuntu1
dotnet-sdk-7.0 –  7.0.112-0ubuntu1
dotnet6 –  6.0.123-0ubuntu1
dotnet7 –  7.0.112-0ubuntu1

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References

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