.NET Denial of Service Vulnerability
Date: 2022-08
Affected: nuget/Microsoft.AspNetCore.App.Runtime.linux-musl-arm, nuget/Microsoft.AspNetCore.App.Runtime.linux-musl-arm, nuget/Microsoft.AspNetCore.App.Runtime.linux-musl-arm
Attack vector: dos
Category: vulnerability-disclosure
Severity: High
CVE: CVE-2022-29145
CWE: CWE-400
CVSS: 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

Microsoft is releasing this security advisory to provide information about a vulnerability in .NET 6.0, .NET 5.0 and .NET Core 3.1. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in .NET 6.0, .NET 5.0 and .NET core 3.1 where a malicious client can can cause a denial of service when HTML forms are parsed. ### Affected software * Any .NET 6.0 application running on .NET 6.0.4 or earlier. * Any .NET 5.0 application running .NET 5.0.16 or earlier. * Any .NET Core 3.1 application running on .NET Core 3.1.24 or earlier. #### Affected packages **.NET Core 3.1** | Package name | Affected version | Patched version | |---------------------------------------------------|---------------------|---------------| | Microsoft.AspNetCore.App.Runtime.win-x64 | >=3.0.0,3.1.24 | 3.1.25 | | Microsoft.AspNetCore.App.Runtime.linux-x64 | >=3.0.0,3.1.24 | 3.1.25 | | Microsoft.AspNetCore.App.Runtime.win-x86 | >=3.0.0,3.1.24 | 3.1.25 | | Microsoft.AspNetCore.App.Runtime.osx-x64 | >=3.0.0,3.1.24 | 3.1.25 | | Microsoft.AspNetCore.App.Runtime.linux-musl-x64 | >=3.0.0,3.1.24 | 3.1.25 | | Microsoft.AspNetCore.App.Runtime.linux-arm64 | >=3.0.0,3.1.24 | 3.1.25 | | Microsoft.AspNetCore.App.Runtime.linux-arm | >=3.0.0,3.1.24 | 3.1.25 | | Microsoft.


Mitigations:

Architectural layers (MAESTRO):