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 vulnerability exists in .NET 5.0 and .NET Core 3.1 where a buffer overflow exists in the Brotli library versions prior to 1.0.8.
Patches
- Any .NET 5.0 application running on .NET 5.0.14 or lower.
- Any .NET Core 3.1 application running on .NET Core 3.1.22 or lower.
To fix the issue, please install the latest version of .NET 5.0 or .NET Core 3.1.
- If you're using .NET 5.0, you should download and install Runtime 5.0.15 or SDK 5.0.212 (for Visual Studio 2019 v16.11) or SDK 5.0.406 (for Visual Studio 2011 v16.11) from https://dotnet.microsoft.com/download/dotnet-core/5.0.
- If you're using .NET Core 3.1, you should download and install Runtime 3.1.23 or SDK 3.1.417 (for Visual Studio 2019 v16.7) from https://dotnet.microsoft.com/download/dotnet-core/3.1.
.NET 5.0 and .NET Core 3.1 updates are also available from Microsoft Update. To access this either type "Check for updates" in your Windows search, or open Settings, choose Update & Security and then click Check for Updates.
Other Details
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 vulnerability exists in .NET 5.0 and .NET Core 3.1 where a buffer overflow exists in the Brotli library versions prior to 1.0.8.
Patches
To fix the issue, please install the latest version of .NET 5.0 or .NET Core 3.1.
.NET 5.0 and .NET Core 3.1 updates are also available from Microsoft Update. To access this either type "Check for updates" in your Windows search, or open Settings, choose Update & Security and then click Check for Updates.
Other Details