CVE-2022-38013

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|>= 3.1.0, < 3.1.29|3.1.29 Microsoft.AspNetCore.App.Runtime.linux-arm64|>= 3.1.0, < 3.1.29|3.1.29 Microsoft.AspNetCore.App.Runtime.linux-musl-arm64|>= 3.1.0, < 3.1.29|3.1.29 Microsoft.AspNetCore.App.Runtime.linux-musl-x64|>= 3.1.0, < 3.1.29|3.1.29 Microsoft.AspNetCore.App.Runtime.linux-x64|>= 3.1.0, < 3.1.29|3.1.29 Microsoft.AspNetCore.App.Runtime.osx-x64|>= 3.1.0, < 3.1.29|3.1.29 Microsoft.AspNetCore.App.Runtime.win-arm|>= 3.1.0, < 3.1.29|3.1.29 Microsoft.AspNetCore.App.Runtime.win-arm64|>= 3.1.5, < 3.1.29|3.1.29 Microsoft.AspNetCore.App.Runtime.win-x64|>= 3.1.0, < 3.1.29|3.1.29 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|>= 5.0.0, < 6.0.9|6.0.9 Microsoft.AspNetCore.App.Runtime.linux-arm64|>= 5.0.0, < 6.0.9|6.0.9 Microsoft.AspNetCore.App.Runtime.linux-musl-arm|>= 5.0.1, < 6.0.9|6.0.9 Microsoft.AspNetCore.App.Runtime.linux-musl-arm64|>= 5.0.0, < 6.0.9|6.0.9 Microsoft.AspNetCore.App.Runtime.linux-musl-x64|>= 5.0.0, < 6.0.9|6.0.9 Microsoft.AspNetCore.App.Runtime.linux-x64|>= 5.0.0, < 6.0.9|6.0.9 Microsoft.AspNetCore.App.Runtime.osx-arm64|>= 6.0.0, < 6.0.9|6.0.9 Microsoft.AspNetCore.App.Runtime.osx-x64|>= 5.0.0, < 6.0.9|6.0.9 Microsoft.AspNetCore.App.Runtime.win-arm|>= 5.0.0, < 6.0.9|6.0.9…

.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 3.1.423 and .NET Runtime 3.1.29.

Security Fix(es):

• dotnet: DenialOfService - ASP.NET Core MVC vulnerable to stack overflow via ModelStateDictionary recursion. (CVE-2022-38013)

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 6.0.109 and .NET Runtime 6.0.9.

Security Fix(es):

• dotnet: DenialOfService - ASP.NET Core MVC vulnerable to stack overflow via ModelStateDictionary recursion. (CVE-2022-38013)

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 Core 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 6.0 to SDK 6.0.109 and Runtime 6.0.9.

Security Fix(es):

• dotnet: DenialOfService - ASP.NET Core MVC vulnerable to stack overflow via ModelStateDictionary recursion. (CVE-2022-38013)

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 3.1.423 and .NET Runtime 3.1.29.

Security Fix(es):

• dotnet: DenialOfService - ASP.NET Core MVC vulnerable to stack overflow via ModelStateDictionary recursion. (CVE-2022-38013)

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 6.0.109 and .NET Runtime 6.0.9.

Security Fix(es):

• dotnet: DenialOfService - ASP.NET Core MVC vulnerable to stack overflow via ModelStateDictionary recursion. (CVE-2022-38013)

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 Core and Visual Studio Denial of Service Vulnerability

.NET Core and Visual Studio Denial of Service Vulnerability

Graham Esau discovered that .NET 6 incorrectly parsed certain payloads during model binding. An attacker could possibly use this issue to cause a denial of service.