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ALSA-2024:7868 — Important: .NET 8.0 security update

Affected: AlmaLinux:8: aspnetcore-runtime-8.0, AlmaLinux:8: aspnetcore-runtime-dbg-8.0, AlmaLinux:8: aspnetcore-targeting-pack-8.0, AlmaLinux:8: dotnet, AlmaLinux:8: dotnet-apphost-pack-8.0, AlmaLinux:8: dotnet-host, AlmaLinux:8: dotnet-hostfxr-8.0, AlmaLinux:8: dotnet-runtime-8.0, AlmaLinux:8: dotnet-runtime-dbg-8.0, AlmaLinux:8: dotnet-sdk-8.0 and 5 more

.NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation.

New versions of .NET that address a security vulnerability are now available. The updated versions are .NET SDK 8.0.110 and .NET Runtime 8.0.10.

Security Fix(es):

* dotnet: kestrel: closing an HTTP/3 stream can cause a race condition and lead to remote code execution (CVE-2024-38229) * dotnet: Multiple .NET components susceptible to hash flooding (CVE-2024-43483) * dotnet: System.IO.Packaging - Multiple DoS vectors in use of SortedList (CVE-2024-43484) * dotnet: Denial of Service in System.Text.Json (CVE-2024-43485)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.Security Fix(es):

* dotnet: System.IO.Packaging - Multiple DoS vectors in use of SortedList (CVE-2024-43484) * dotnet: Multiple .NET components susceptible to hash flooding (CVE-2024-43483) * dotnet: Denial of Service in System.Text.Json (CVE-2024-43485) * dotnet: kestrel: closing an HTTP/3 stream can cause a race condition and lead to remote code execution (CVE-2024-38229)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

bdu:2024-08706

BIT-dotnet-2024-38229 — .NET and Visual Studio Remote Code Execution Vulnerability

Affected: Bitnami: dotnet

.NET and Visual Studio Remote Code Execution Vulnerability

certfr-2024-avi-0855 — De multiples vulnérabilités ont été découvertes dans Microsoft .Net. Elles permettent à un attaquant de provoquer une e…

certfr-2024-avi-0855

CLEANSTART-2025-GH63258 — .NET and Visual Studio Remote Code Execution Vulnerability

Affected: CleanStart: dotnet8-runtime

Security vulnerability affects the dotnet8-runtime package. .

cnvd-2024-44520

EUVD-2026-355674

fkie_cve-2024-38229

.NET and Visual Studio Remote Code Execution Vulnerability

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

Affected: NuGet: Microsoft.AspNetCore.App.Runtime.linux-arm, NuGet: Microsoft.AspNetCore.App.Runtime.linux-arm64, NuGet: Microsoft.AspNetCore.App.Runtime.linux-musl-arm, NuGet: Microsoft.AspNetCore.App.Runtime.linux-musl-arm64, NuGet: Microsoft.AspNetCore.App.Runtime.linux-musl-x64, NuGet: Microsoft.AspNetCore.App.Runtime.linux-x64, NuGet: Microsoft.AspNetCore.App.Runtime.osx-arm64, NuGet: Microsoft.AspNetCore.App.Runtime.osx-x64, NuGet: Microsoft.AspNetCore.App.Runtime.win-arm, NuGet: Microsoft.AspNetCore.App.Runtime.win-arm64 and 2 more

# Microsoft Security Advisory CVE-2024-38229 | .NET Remote Code Execution Vulnerability

## <a name="executive-summary"></a>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

## <a name="mitigation-factors"></a>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.

## <a name="affected-software"></a>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.

## <a name…

msrc_CVE-2024-38229 — .NET and Visual Studio Remote Code Execution Vulnerability

msrc_CVE-2024-38229

RHSA-2024:7868 — Red Hat Security Advisory: .NET 8.0 security update

dotnet: kestrel: closing an HTTP/3 stream can cause a race condition and lead to remote code execution dotnet: Multiple .NET components susceptible to hash flooding dotnet: System.IO.Packaging - Multiple DoS vectors in use of SortedList dotnet: Denial of Service in System.Text.Json

UBUNTU-CVE-2024-38229

Affected: Ubuntu:22.04:LTS: dotnet7, Ubuntu:22.04:LTS: dotnet8, Ubuntu:24.04:LTS: dotnet8

.NET and Visual Studio Remote Code Execution Vulnerability

WID-SEC-W-2024-3124 — Microsoft Entwicklerwerkzeuge: Mehrere Schwachstellen ermöglichen Privilegieneskalation

Ein Angreifer kann mehrere Schwachstellen in Microsoft Visual Studio 2015, Microsoft Visual Studio 2017, Microsoft Visual Studio Code, Microsoft .NET Framework, Microsoft Visual Studio 2019, Microsoft Visual Studio 2022 und Microsoft Visual C++ ausnutzen, um seine Privilegien zu erhöhen, beliebigen Code auszuführen und einen Denial-of-Service-Zustand zu erzeugen.