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USN-6438-1: .NET vulnerabilities

19 October 2023

Several security issues were fixed in dotnet6, dotnet7.

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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)

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-6362-1: dotnet-hostfxr-7.0, dotnet-hostfxr-6.0, aspnetcore-targeting-pack-7.0, aspnetcore-runtime-7.0, dotnet-sdk-6.0-source-built-artifacts, dotnet-sdk-6.0, dotnet-targeting-pack-6.0, dotnet-host-7.0, aspnetcore-runtime-6.0, dotnet6, dotnet-sdk-7.0-source-built-artifacts, netstandard-targeting-pack-2.1-7.0, dotnet-runtime-7.0, dotnet-sdk-7.0, dotnet-host, dotnet-targeting-pack-7.0, netstandard-targeting-pack-2.1, aspnetcore-targeting-pack-6.0, dotnet-apphost-pack-7.0, dotnet-templates-6.0, dotnet-runtime-6.0, dotnet7, dotnet-apphost-pack-6.0, dotnet-templates-7.0
  • USN-6438-2: dotnet-hostfxr-7.0, dotnet-hostfxr-6.0, aspnetcore-targeting-pack-7.0, aspnetcore-runtime-7.0, dotnet-sdk-6.0-source-built-artifacts, dotnet-sdk-6.0, dotnet-targeting-pack-6.0, dotnet-host-7.0, aspnetcore-runtime-6.0, dotnet6, dotnet-sdk-7.0-source-built-artifacts, netstandard-targeting-pack-2.1-7.0, dotnet-runtime-7.0, dotnet-sdk-7.0, dotnet-host, dotnet-targeting-pack-7.0, netstandard-targeting-pack-2.1, aspnetcore-targeting-pack-6.0, dotnet-apphost-pack-7.0, dotnet-templates-6.0, dotnet-runtime-6.0, dotnet7, dotnet-apphost-pack-6.0, dotnet-templates-7.0
  • USN-6362-2: dotnet-hostfxr-7.0, dotnet-hostfxr-6.0, aspnetcore-targeting-pack-7.0, aspnetcore-runtime-7.0, dotnet-sdk-6.0-source-built-artifacts, dotnet-sdk-6.0, dotnet-targeting-pack-6.0, dotnet-host-7.0, aspnetcore-runtime-6.0, dotnet6, dotnet-sdk-7.0-source-built-artifacts, netstandard-targeting-pack-2.1-7.0, dotnet-runtime-7.0, dotnet-sdk-7.0, dotnet-host, dotnet-targeting-pack-7.0, netstandard-targeting-pack-2.1, aspnetcore-targeting-pack-6.0, dotnet-apphost-pack-7.0, dotnet-templates-6.0, dotnet-runtime-6.0, dotnet7, dotnet-apphost-pack-6.0, dotnet-templates-7.0
  • USN-6427-1: dotnet-hostfxr-7.0, dotnet-hostfxr-6.0, aspnetcore-targeting-pack-7.0, aspnetcore-runtime-7.0, dotnet-sdk-6.0-source-built-artifacts, dotnet-sdk-6.0, dotnet-targeting-pack-6.0, dotnet-host-7.0, aspnetcore-runtime-6.0, dotnet6, dotnet-sdk-7.0-source-built-artifacts, netstandard-targeting-pack-2.1-7.0, dotnet-runtime-7.0, dotnet-sdk-7.0, dotnet-host, dotnet-targeting-pack-7.0, netstandard-targeting-pack-2.1, aspnetcore-targeting-pack-6.0, dotnet-apphost-pack-7.0, dotnet-templates-6.0, dotnet-runtime-6.0, dotnet7, dotnet-apphost-pack-6.0, dotnet-templates-7.0
  • USN-6427-2: dotnet-hostfxr-8.0, dotnet8, dotnet-sdk-8.0-source-built-artifacts, dotnet-apphost-pack-8.0, dotnet-targeting-pack-8.0, dotnet-host-8.0, aspnetcore-runtime-8.0, aspnetcore-targeting-pack-8.0, dotnet-sdk-8.0, dotnet-templates-8.0, dotnet-runtime-8.0, netstandard-targeting-pack-2.1-8.0
  • USN-6505-1: nghttp2-proxy, nghttp2-client, nghttp2-server, libnghttp2-dev, nghttp2, libnghttp2-14, libnghttp2-doc
  • USN-6574-1: golang-1.20-src, golang-1.21-doc, golang-1.20, golang-1.21-src, golang-1.20-go, golang-1.21, golang-1.21-go, golang-1.20-doc
  • USN-6754-1: nghttp2-proxy, nghttp2-client, nghttp2-server, libnghttp2-dev, nghttp2, libnghttp2-14, libnghttp2-doc
  • USN-6994-1: netty, libnetty-java
  • USN-7067-1: haproxy-doc, vim-haproxy, haproxy

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