GHSA-7vw9-cfwx-9gx9 Microsoft Security Advisory CVE-2024-38229 | .NET Remote Code Execution Vulnerability

• NuGet Microsoft.AspNetCore.App.Runtime.linux-arm: >= 9.0.0-preview.1.24081.5, < 9.0.0-rc.2.24474.3 → fixed in 9.0.0-rc.2.24474.3 • NuGet Microsoft.AspNetCore.App.Runtime.linux-arm: >= 8.0.0, < 8.0.10 → fixed in 8.0.10 • NuGet Microsoft.AspNetCore.App.Runtime.linux-arm64: >= 9.0.0-preview.1.24081.5, < 9.0.0-rc.2.24474.3 → fixed in 9.0.0-rc.2.24474.3 • NuGet Microsoft.AspNetCore.App.Runtime.linux-arm64: >= 8.0.0, < 8.0.10 → fixed in 8.0.10 • NuGet Microsoft.AspNetCore.App.Runtime.linux-musl-arm: >= 9.0.0-preview.1.24081.5, < 9.0.0-rc.2.24474.3 → fixed in 9.0.0-rc.2.24474.3 • NuGet Microsoft.AspNetCore.App.Runtime.linux-musl-arm: >= 8.0.0, < 8.0.10 → fixed in 8.0.10 • NuGet Microsoft.AspNetCore.App.Runtime.linux-musl-arm64: >= 9.0.0-preview.1.24081.5, < 9.0.0-rc.2.24474.3 → fixed in 9.0.0-rc.2.24474.3 • NuGet Microsoft.AspNetCore.App.Runtime.linux-musl-arm64: >= 8.0.0, < 8.0.10 → fixed in 8.0.10 • NuGet Microsoft.AspNetCore.App.Runtime.linux-musl-x64: >= 9.0.0-preview.1.24081.5, < 9.0.0-rc.2.24474.3 → fixed in 9.0.0-rc.2.24474.3 • NuGet Microsoft.AspNetCore.App.Runtime.linux-musl-x64: >= 8.0.0, < 8.0.10 → fixed in 8.0.10 • NuGet Microsoft.AspNetCore.App.Runtime.linux-x64: >= 9.0.0-preview.1.24081.5, < 9.0.0-rc.2.24474.3 → fixed in 9.0.0-rc.2.24474.3 • NuGet Microsoft.AspNetCore.App.Runtime.linux-x64: >= 8.0.0, < 8.0.10 → fixed in 8.0.10 • NuGet Microsoft.AspNetCore.App.Runtime.osx-arm64: >= 9.0.0-preview.1.24081.5, < 9.0.0-rc.2.24474.3 → fixed in 9.0.0-rc.2.24474.3 • NuGet Microsoft.AspNetCore.App.Runtime.osx-arm64: >= 8.0.0, < 8.0.10 → fixed in 8.0.10 • NuGet Microsoft.AspNetCore.App.Runtime.osx-x64: >= 9.0.0-preview.1.24081.5, < 9.0.0-rc.2.24474.3 → fixed in 9.0.0-rc.2.24474.3 • NuGet Microsoft.AspNetCore.App.Runtime.osx-x64: >= 8.0.0, < 8.0.10 → fixed in 8.0.10 • NuGet Microsoft.AspNetCore.App.Runtime.win-arm: >= 9.0.0-preview.1.24081.5, < 9.0.0-rc.2.24474.3 → fixed in 9.0.0-rc.2.24474.3 • NuGet Microsoft.AspNetCore.App.Runtime.win-arm: >= 8.0.0, < 8.0.10 → fixed in 8.0.10 • NuGet Microsoft.AspNetCore.App.Runtime.win-arm64: >= 9.0.0-preview.1.24081.5, < 9.0.0-rc.2.24474.3 → fixed in 9.0.0-rc.2.24474.3 • NuGet Microsoft.AspNetCore.App.Runtime.win-arm64: >= 8.0.0, < 8.0.10 → fixed in 8.0.10 • NuGet Microsoft.AspNetCore.App.Runtime.win-x64: >= 9.0.0-preview.1.24081.5, < 9.0.0-rc.2.24474.3 → fixed in 9.0.0-rc.2.24474.3 • NuGet Microsoft.AspNetCore.App.Runtime.win-x64: >= 8.0.0, < 8.0.10 → fixed in 8.0.10 • NuGet Microsoft.AspNetCore.App.Runtime.win-x86: >= 9.0.0-preview.1.24081.5, < 9.0.0-rc.2.24474.3 → fixed in 9.0.0-rc.2.24474.3 • NuGet Microsoft.AspNetCore.App.Runtime.win-x86: >= 8.0.0, < 8.0.10 → fixed in 8.0.10

Microsoft Security Advisory CVE-2024-38229 | .NET Remote Code Execution Vulnerability Executive summary Microsoft is releasing this security advisory to provide information about a vulnerability in .NET 8.0 and .NET 9.0. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in ASP.NET when closing an HTTP/3 stream while application code is writing to the response body, a race condition may lead to use-after-free. Note: HTTP/3 is experimental in .NET 6.0. If you are on .NET 6.0 and using HTTP/3, please upgrade to .NET 8.0.10. .NET 6.0 will not receive a security patch for this vulnerability. Announcement Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/326 Mitigation factors HTTP/3 support is not enabled by default in ASP.NET Core applications. For more information on how to configure HTTP/3 support please visit https://learn.microsoft.com/aspnet/core/fundamentals/servers/kestrel/http3?view=aspnetcore-8.0#getting-started and https://learn.microsoft.com/aspnet/core/fundamentals/servers/kestrel/endpoints?view=aspnetcore-8.0#configure-http-protocols-in-appsettingsjson. Affected software • Any ASP.NET 8.0 application running on .NET 8.0.8 or earlier. • Any ASP.NET 9.0 application running on .NET 9.0.0.RC.1 or earlier. Affected Packages The vulnerability affects any Microsoft .NET Core project if it uses any of affected packages versions listed below ASP.NET 9 Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- Microsoft.AspNetCore.App.Runtime.linux-arm | >=9.0.0-preview.1.24081.5, =9.0.0-preview.1.24081.5, =9.0.0-preview.1.24081.5, =9.0.0-preview.1.24081.5, =9.0.0-preview.1.24081.5, =9.0.0-preview.1.24081.5, =9.0.0-preview.1.24081.5, =9.0.0-preview.1.24081.5, =9.0.0-preview.1.24081.5, =9.0.0-preview.1.24081.5, =9.0.0-preview.1.24081.5, =9.0.0-preview.1.24081.5, ASP.NET 8 Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- Microsoft.AspNetCore.App.Runtime.linux-arm | >=8.0.0, =8.0.0, =8.0.0, =8.0.0, =8.0.0, =8.0.0, =8.0.0, =8.0.0, =8.0.0, =8.0.0, =8.0.0, =8.0.0, How do I know if I am affected? If you have a runtime or SDK with a version listed, or an affected package listed in affected software or affected packages, you're exposed to the vulnerability. How do I fix the issue? • To fix the issue please install the latest version of .NET 9.0 or .NET 8.0. If you have installed one or more .NET SDKs through Visual Studio, Visual Studio will prompt you to update Visual Studio, which will also update your .NET SDKs. • If you have .NET 6.0 or greater installed, you can list the versions you have installed by running the `dotnet --info` command. You will see output like the following; ``` .NET Core SDK (reflecting any global.json): Version: 8.0.200 Commit: 8473146e7d Runtime Environment: OS Name: Windows OS Version: 10.0.18363 OS Platform: Windows RID: win10-x64 Base Path: C:\Program Files\dotnet\sdk\6.0.300\ Host (useful for support): Version: 8.0.3 Commit: 8473146e7d .NET Core SDKs installed: 8.0.200 [C:\Program Files\dotnet\sdk] .NET Core runtimes installed: Microsoft.AspAspNetCore.App 8.0.3 [C:\Program Files\dotnet\shared\Microsoft.AspAspNetCore.App] Microsoft.AspNetCore.App 8.0.3 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.WindowsDesktop.App 8.0.3 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App] To install additional .NET Core runtimes or SDKs: https://aka.ms/dotnet-download ``` • If you're using .NET 9.0, you should download and install .NET 9.0 RC…