| summary |
.NET Denial of Service Vulnerability
Microsoft is releasing this security advisory to provide information about a vulnerability in .NET Core 3.1 and .NET 6.0. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.
A denial of service vulnerability exists in ASP.NET Core 3.1 and .NET 6.0 where a malicious client could cause a stack overflow which may result in a denial of service attack when an attacker sends a customized payload that is parsed during model binding.
## <a name="affected-software"></a>Affected software
* Any .NET 6.0 application running on .NET 6.0.8 or earlier.
* Any ASP.NET Core 3.1 application running on .NET Core 3.1.28 or earlier.
If your application uses the following package versions, ensure you update to the latest version of .NET.
### <a name="ASP.NET Core 3.1"></a>.NET Core 3.1
Package name | Affected version | Patched version
------------ | ---------------- | -------------------------
[Microsoft.AspNetCore.App.Runtime.linux-arm](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-arm)|>= 3.1.0, < 3.1.29|3.1.29
[Microsoft.AspNetCore.App.Runtime.linux-arm64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-arm64)|>= 3.1.0, < 3.1.29|3.1.29
[Microsoft.AspNetCore.App.Runtime.linux-musl-arm64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-musl-arm64)|>= 3.1.0, < 3.1.29|3.1.29
[Microsoft.AspNetCore.App.Runtime.linux-musl-x64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-musl-x64)|>= 3.1.0, < 3.1.29|3.1.29
[Microsoft.AspNetCore.App.Runtime.linux-x64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-x64)|>= 3.1.0, < 3.1.29|3.1.29
[Microsoft.AspNetCore.App.Runtime.osx-x64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.osx-x64)|>= 3.1.0, < 3.1.29|3.1.29
[Microsoft.AspNetCore.App.Runtime.win-arm](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.win-arm)|>= 3.1.0, < 3.1.29|3.1.29
[Microsoft.AspNetCore.App.Runtime.win-arm64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.win-arm64)|>= 3.1.5, < 3.1.29|3.1.29
[Microsoft.AspNetCore.App.Runtime.win-x64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.win-x64)|>= 3.1.0, < 3.1.29|3.1.29
[Microsoft.AspNetCore.App.Runtime.win-x86](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.win-x86)|>= 3.1.0, < 3.1.29|3.1.29
### <a name=".NET 6"></a>.NET 6
Package name | Affected version | Patched version
------------ | ---------------- | -------------------------
[Microsoft.AspNetCore.App.Runtime.linux-arm](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-arm)|>= 5.0.0, < 6.0.9|6.0.9
[Microsoft.AspNetCore.App.Runtime.linux-arm64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-arm64)|>= 5.0.0, < 6.0.9|6.0.9
[Microsoft.AspNetCore.App.Runtime.linux-musl-arm](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-musl-arm)|>= 5.0.1, < 6.0.9|6.0.9
[Microsoft.AspNetCore.App.Runtime.linux-musl-arm64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-musl-arm64)|>= 5.0.0, < 6.0.9|6.0.9
[Microsoft.AspNetCore.App.Runtime.linux-musl-x64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-musl-x64)|>= 5.0.0, < 6.0.9|6.0.9
[Microsoft.AspNetCore.App.Runtime.linux-x64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.linux-x64)|>= 5.0.0, < 6.0.9|6.0.9
[Microsoft.AspNetCore.App.Runtime.osx-arm64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.osx-arm64)|>= 6.0.0, < 6.0.9|6.0.9
[Microsoft.AspNetCore.App.Runtime.osx-x64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.osx-x64)|>= 5.0.0, < 6.0.9|6.0.9
[Microsoft.AspNetCore.App.Runtime.win-arm](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.win-arm)|>= 5.0.0, < 6.0.9|6.0.9
[Microsoft.AspNetCore.App.Runtime.win-arm64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.win-arm64)|>= 5.0.0, < 6.0.9|6.0.9
[Microsoft.AspNetCore.App.Runtime.win-x64](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.win-x64)|>= 5.0.0, < 6.0.9|6.0.9
[Microsoft.AspNetCore.App.Runtime.win-x86](https://www.nuget.org/packages/Microsoft.AspNetCore.App.Runtime.win-x86)|>= 5.0.0, < 6.0.9|6.0.9
### Other
Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/234
An Issue for this can be found at https://github.com/dotnet/aspnetcore/issues/43953
MSRC details for this can be found at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-38013 |