Today, we are releasing the .NET June 2021 Updates. These updates contains reliability and security improvements. See the individual release notes for details on updated packages.

You can download 5.0.7 , 3.1.16 versions for Windows, macOS, and Linux, for x86, x64, Arm32, and Arm64.

• Installers and binaries: 5.0.7 | 3.1.16
• Release notes: 5.0.7 | 3.1.16
• Container images
• Linux packages: 5.0.7 | 3.1.16
• Release feedback/issues
• Known issues: 5.0 | 3.1

Security

CVE-2021-31957: ASP.NET Denial of Service Vulnerability

Microsoft is releasing this security advisory to provide information about a vulnerability in .NET 5.0 and .NET Core 3.1.

This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.

A denial of service vulnerability exists when ASP.NET Core improperly handles client disconnect.

Improvements

• ASP.NET Core : 5.0.7
• CoreCLR: 3.1.16
• Extensions: 3.1.16
• Runtime : 5.0.7

Visual Studio

See release notes for Visual Studio compatibility for .NET Core 3.1 and .NET 5.0.


Rahul Bhandari
Software Engineer, .NET

Source: https://devblogs.microsoft.com/dotnet/net-june-2021/

Posted By: Brink
09 Jun 2021