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USN-6427-2: .NET vulnerability

19 October 2023

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

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Releases

Packages

  • dotnet8 - .NET CLI tools and runtime

Details

USN-6427-1 fixed a vulnerability in .NET. This update
provides the corresponding update for .NET 8.

Original advisory 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.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 23.10

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

References

Related notices

  • USN-6427-1: netstandard-targeting-pack-2.1, dotnet-runtime-6.0, dotnet7, dotnet-apphost-pack-6.0, dotnet6, dotnet-host, dotnet-targeting-pack-7.0, aspnetcore-runtime-7.0, dotnet-hostfxr-6.0, aspnetcore-targeting-pack-6.0, dotnet-sdk-7.0, dotnet-templates-7.0, dotnet-sdk-6.0-source-built-artifacts, dotnet-runtime-7.0, dotnet-templates-6.0, dotnet-targeting-pack-6.0, aspnetcore-targeting-pack-7.0, dotnet-apphost-pack-7.0, netstandard-targeting-pack-2.1-7.0, dotnet-sdk-7.0-source-built-artifacts, dotnet-sdk-6.0, aspnetcore-runtime-6.0, dotnet-hostfxr-7.0, dotnet-host-7.0
  • USN-6438-1: netstandard-targeting-pack-2.1, dotnet-runtime-6.0, dotnet7, dotnet-apphost-pack-6.0, dotnet6, dotnet-host, dotnet-targeting-pack-7.0, aspnetcore-runtime-7.0, dotnet-hostfxr-6.0, aspnetcore-targeting-pack-6.0, dotnet-sdk-7.0, dotnet-templates-7.0, dotnet-sdk-6.0-source-built-artifacts, dotnet-runtime-7.0, dotnet-templates-6.0, dotnet-targeting-pack-6.0, aspnetcore-targeting-pack-7.0, dotnet-apphost-pack-7.0, netstandard-targeting-pack-2.1-7.0, dotnet-sdk-7.0-source-built-artifacts, dotnet-sdk-6.0, aspnetcore-runtime-6.0, dotnet-hostfxr-7.0, dotnet-host-7.0
  • USN-6505-1: libnghttp2-14, nghttp2, libnghttp2-dev, nghttp2-proxy, nghttp2-server, nghttp2-client, libnghttp2-doc
  • USN-6574-1: golang-1.20-src, golang-1.21-go, golang-1.20-doc, golang-1.21, golang-1.21-doc, golang-1.21-src, golang-1.20, golang-1.20-go
  • USN-6754-1: libnghttp2-14, nghttp2, libnghttp2-dev, nghttp2-proxy, nghttp2-server, nghttp2-client, libnghttp2-doc
  • USN-6994-1: netty, libnetty-java
  • USN-7067-1: haproxy, haproxy-doc, vim-haproxy

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Further reading