=========================================================================Ubuntu Security Notice USN-5798-1
January 10, 2023

dotnet6 vulnerability
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.10
- Ubuntu 22.04 LTS

Summary:

dotnet6 could be made to crash if it received specially crafted
network traffic.

Software Description:
- dotnet6: dotNET CLI tools and runtime

Details:

Johan Gorter discovered that .NET 6 incorrectly processed certain
invalid HTTP requests. An attacker could possibly use this issue to
cause a denial of service condition for an exposed endpoint.

Update instructions:

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

Ubuntu 22.10:
   aspnetcore-runtime-6.0          6.0.113-0ubuntu1~22.10.1
   dotnet-host                             6.0.113-0ubuntu1~22.10.1
   dotnet-hostfxr-6.0                   6.0.113-0ubuntu1~22.10.1
   dotnet-runtime-6.0                  6.0.113-0ubuntu1~22.10.1
   dotnet-sdk-6.0                        6.0.113-0ubuntu1~22.10.1
   dotnet6                                   6.0.113-0ubuntu1~22.10.1

Ubuntu 22.04 LTS:
   aspnetcore-runtime-6.0         6.0.113-0ubuntu1~22.04.1
   dotnet-host                            6.0.113-0ubuntu1~22.04.1
   dotnet-hostfxr-6.0                  6.0.113-0ubuntu1~22.04.1
   dotnet-runtime-6.0                 6.0.113-0ubuntu1~22.04.1
   dotnet-sdk-6.0                       6.0.113-0ubuntu1~22.04.1
   dotnet6                                  6.0.113-0ubuntu1~22.04.1

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

References:
   https://ubuntu.com/security/notices/USN-5798-1
   CVE-2023-21538

Package Information:
   https://launchpad.net/ubuntu/+source/dotnet6/6.0.113-0ubuntu1~22.10.1
   https://launchpad.net/ubuntu/+source/dotnet6/6.0.113-0ubuntu1~22.04.1