1. Ubuntu Security Notices
  2. USN-6427-1

USN-6427-1: .NET vulnerability

Publication date

10 October 2023

Overview

.NET could be made to crash if it received specially crafted network traffic.

Releases

Packages

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

Details

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.

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.

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
23.04 lunar aspnetcore-runtime-6.0 –  6.0.123-0ubuntu1~23.04.1
aspnetcore-runtime-7.0 –  7.0.112-0ubuntu1~23.04.1
dotnet-host –  6.0.123-0ubuntu1~23.04.1
dotnet-host-7.0 –  7.0.112-0ubuntu1~23.04.1
dotnet-hostfxr-6.0 –  6.0.123-0ubuntu1~23.04.1
dotnet-hostfxr-7.0 –  7.0.112-0ubuntu1~23.04.1
dotnet-runtime-6.0 –  6.0.123-0ubuntu1~23.04.1
dotnet-runtime-7.0 –  7.0.112-0ubuntu1~23.04.1
dotnet-sdk-6.0 –  6.0.123-0ubuntu1~23.04.1
dotnet-sdk-7.0 –  7.0.112-0ubuntu1~23.04.1
dotnet6 –  6.0.123-0ubuntu1~23.04.1
dotnet7 –  7.0.112-0ubuntu1~23.04.1
22.04 jammy aspnetcore-runtime-6.0 –  6.0.123-0ubuntu1~22.04.1
aspnetcore-runtime-7.0 –  7.0.112-0ubuntu1~22.04.1
dotnet-host –  6.0.123-0ubuntu1~22.04.1
dotnet-host-7.0 –  7.0.112-0ubuntu1~22.04.1
dotnet-hostfxr-6.0 –  6.0.123-0ubuntu1~22.04.1
dotnet-hostfxr-7.0 –  7.0.112-0ubuntu1~22.04.1
dotnet-runtime-6.0 –  6.0.123-0ubuntu1~22.04.1
dotnet-runtime-7.0 –  7.0.112-0ubuntu1~22.04.1
dotnet-sdk-6.0 –  6.0.123-0ubuntu1~22.04.1
dotnet-sdk-7.0 –  7.0.112-0ubuntu1~22.04.1
dotnet6 –  6.0.123-0ubuntu1~22.04.1
dotnet7 –  7.0.112-0ubuntu1~22.04.1

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References

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