CVE-2024-21392

Microsoft Security Advisory CVE-2024-21392: .NET Denial of Service Vulnerability

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

Microsoft is releasing this security advisory to provide information about a vulnerability in .NET 7.0 and .NET 8.0 . This advisory also provides guidance on what developers can do to update their applications to address this vulnerability.

A vulnerability exists in .NET where specially crafted requests may cause a resource leak, leading to a Denial of Service

Announcement

Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/299

<a name="mitigation-factors"></a>Mitigation factors

Microsoft has not identified any mitigating factors for this vulnerability.

<a name="affected-software"></a>Affected software

• Any .NET 7.0 application running on .NET 7.0.16 or earlier.
• Any .NET 8.0 application running on .NET 8.0.2 or earlier.

<a name="affected-packages"></a>Affected Packages

The vulnerability affects any Microsoft .NET Core project if it uses any of affected packages versions listed below

Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- Microsoft.NETCore.App.Runtime.linux-arm | <= 7.0.16 | 7.0.17 Microsoft.NETCore.App.Runtime.linux-arm64 | <= 7.0.16 | 7.0.17 Microsoft.NETCore.App.Runtime.linux-musl-arm | <= 7.0.16 | 7.0.17 Microsoft.NETCore.App.Runtime.linux-musl-arm64 | <= 7.0.16 | 7.0.17 Microsoft.NETCore.App.Runtime.linux-musl-x64 | <= 7.0.16 | 7.0.17 Microsoft.NETCore.App.Runtime.linux-x64 | <= 7.0.16 | 7.0.17 Microsoft.NETCore.App.Runtime.osx-arm64 | <= 7.0.16 | 7.0.17 Microsoft.NETCore.App.Runtime.osx-x64 | <= 7.0.16 | 7.0.17 Microsoft.NETCore.App.Runtime.win-arm | <= 7.0.16 | 7.0.17 Microsoft.NETCore.App.Runtime.win-arm64 | <= 7.0.16 | 7.0.17 Microsoft.NETCore.App.Runtime.win-x64 | <= 7.0.16 | 7.0.17 Microsoft.NETCore.App.Runtime.win-x86 | <= 7.0.16 | 7.0.17

<a name=".NET 7"></a>.NET 8.0

Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- Microsoft.NETCore.App.Runtime.linux-arm | <= 8.0.2 | 8.0.3 Microsoft.NETCore.App.Runtime.linux-arm64 | <= 8.0.2 | 8.0.3 Microsoft.NETCore.App.Runtime.linux-musl-arm | <= 8.0.2 | 8.0.3 Microsoft.NETCore.App.Runtime.linux-musl-arm64 | <= 8.0.2 | 8.0.3 Microsoft.NETCore.App.Runtime.linux-musl-x64 | <= 8.0.2 | 8.0.3…

.NET and Visual Studio Denial of Service Vulnerability

.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 7.0.117 and .NET Runtime 7.0.17.

Security Fix(es):

• dotnet: DoS in .NET Core / YARP HTTP / 2 WebSocket support (CVE-2024-21392)

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.

.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 7.0.117 and .NET Runtime 7.0.17.

Security Fix(es):

• dotnet: DoS in .NET Core / YARP HTTP / 2 WebSocket support (CVE-2024-21392)

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.

.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 8.0.103 and .NET Runtime 8.0.3.

Security Fix(es):

• dotnet: DoS in .NET Core / YARP HTTP / 2 WebSocket support (CVE-2024-21392)

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.

.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 8.0.103 and .NET Runtime 8.0.3.

Security Fix(es):

• dotnet: DoS in .NET Core / YARP HTTP / 2 WebSocket support (CVE-2024-21392)

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.

.NET and Visual Studio Denial of Service Vulnerability

.NET and Visual Studio Denial of Service Vulnerability

.NET and Visual Studio Denial of Service Vulnerability

.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 7.0.117 and .NET Runtime 7.0.17.

Security Fix(es):

• dotnet: DoS in .NET Core / YARP HTTP / 2 WebSocket support (CVE-2024-21392)

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.

.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 8.0.103 and .NET Runtime 8.0.3.

Security Fix(es):

• dotnet: DoS in .NET Core / YARP HTTP / 2 WebSocket support (CVE-2024-21392)

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.

It was discovered that .NET did not properly handle certain specially crafted requests. An attacker could potentially use this issue to cause a resource leak, leading to a denial of service.