# CVE-2022-21986: .NET Denial of Service Vulnerability

Source: https://junglewise.ai/threats/cve-2022-21986-net-denial-of-service-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2022-10-21  
License: CC BY 4.0 with a link back

CVE-2022-21986 · Severity: low · CVSS 3.1 · Published 2022-10-21

.NET Denial of Service Vulnerability

Technologies: [Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet)](https://junglewise.ai/threats/technologies/microsoft-aspnetcore-app-runtime-linux-arm), [Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet)](https://junglewise.ai/threats/technologies/microsoft-aspnetcore-app-runtime-linux-arm64), [Microsoft.AspNetCore.App.Runtime.linux-musl-arm (NuGet)](https://junglewise.ai/threats/technologies/microsoft-aspnetcore-app-runtime-linux-musl-arm), [Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet)](https://junglewise.ai/threats/technologies/microsoft-aspnetcore-app-runtime-linux-musl-arm64), [Microsoft.AspNetCore.App.Runtime.linux-musl-x64 (NuGet)](https://junglewise.ai/threats/technologies/microsoft-aspnetcore-app-runtime-linux-musl-x64), [Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet)](https://junglewise.ai/threats/technologies/microsoft-aspnetcore-app-runtime-linux-x64), [Microsoft.AspNetCore.App.Runtime.osx-arm64 (NuGet)](https://junglewise.ai/threats/technologies/microsoft-aspnetcore-app-runtime-osx-arm64), [Microsoft.AspNetCore.App.Runtime.osx-x64 (NuGet)](https://junglewise.ai/threats/technologies/microsoft-aspnetcore-app-runtime-osx-x64), [Microsoft.AspNetCore.App.Runtime.win-arm (NuGet)](https://junglewise.ai/threats/technologies/microsoft-aspnetcore-app-runtime-win-arm), [Microsoft.AspNetCore.App.Runtime.win-arm64 (NuGet)](https://junglewise.ai/threats/technologies/microsoft-aspnetcore-app-runtime-win-arm64), [Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet)](https://junglewise.ai/threats/technologies/microsoft-aspnetcore-app-runtime-win-x64), [Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet)](https://junglewise.ai/threats/technologies/microsoft-aspnetcore-app-runtime-win-x86). Vendors: [NuGet](https://junglewise.ai/threats/vendors/nuget).

## Quick answers

**Is CVE-2022-21986 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2022-21986 being exploited in the wild.

**How severe is CVE-2022-21986?** Low severity, with a CVSS score of 3.1, published 21 October 2022.

**Which products and versions are affected?** Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet) ECOSYSTEM:introduced=5.0.0,fixed=5.0.14; Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet) ECOSYSTEM:introduced=5.0.0,fixed=5.0.14; Microsoft.AspNetCore.App.Runtime.linux-musl-arm (NuGet) ECOSYSTEM:introduced=5.0.0,fixed=5.0.14; Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet) ECOSYSTEM:introduced=5.0.0,fixed=5.0.14; and 8 more.

**Is there a fix for CVE-2022-21986?** Yes. Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet): upgrade to 5.0.14 or later; Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet): upgrade to 5.0.14 or later; Microsoft.AspNetCore.App.Runtime.linux-musl-arm (NuGet): upgrade to 5.0.14 or later; Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet): upgrade to 5.0.14 or later; Microsoft.AspNetCore.App.Runtime.linux-musl-x64 (NuGet): upgrade to 5.0.14 or later; Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet): upgrade to 5.0.14 or later; Microsoft.AspNetCore.App.Runtime.osx-arm64 (NuGet): upgrade to 6.0.2 or later; Microsoft.AspNetCore.App.Runtime.osx-x64 (NuGet): upgrade to 5.0.14 or later; Microsoft.AspNetCore.App.Runtime.win-arm (NuGet): upgrade to 5.0.14 or later; Microsoft.AspNetCore.App.Runtime.win-arm64 (NuGet): upgrade to 5.0.14 or later; Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet): upgrade to 5.0.14 or later; Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet): upgrade to 5.0.14 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2022-21986?** Check whether you run Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet), Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet), Microsoft.AspNetCore.App.Runtime.linux-musl-arm (NuGet) or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet): upgrade to 5.0.14 or later

  ```sh
  dotnet add package Microsoft.AspNetCore.App.Runtime.linux-arm --version 5.0.14
  ```

- Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet): upgrade to 5.0.14 or later

  ```sh
  dotnet add package Microsoft.AspNetCore.App.Runtime.linux-arm64 --version 5.0.14
  ```

- Microsoft.AspNetCore.App.Runtime.linux-musl-arm (NuGet): upgrade to 5.0.14 or later

  ```sh
  dotnet add package Microsoft.AspNetCore.App.Runtime.linux-musl-arm --version 5.0.14
  ```

- Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet): upgrade to 5.0.14 or later

  ```sh
  dotnet add package Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 --version 5.0.14
  ```

- Microsoft.AspNetCore.App.Runtime.linux-musl-x64 (NuGet): upgrade to 5.0.14 or later

  ```sh
  dotnet add package Microsoft.AspNetCore.App.Runtime.linux-musl-x64 --version 5.0.14
  ```

- Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet): upgrade to 5.0.14 or later

  ```sh
  dotnet add package Microsoft.AspNetCore.App.Runtime.linux-x64 --version 5.0.14
  ```

- Microsoft.AspNetCore.App.Runtime.osx-arm64 (NuGet): upgrade to 6.0.2 or later

  ```sh
  dotnet add package Microsoft.AspNetCore.App.Runtime.osx-arm64 --version 6.0.2
  ```

- Microsoft.AspNetCore.App.Runtime.osx-x64 (NuGet): upgrade to 5.0.14 or later

  ```sh
  dotnet add package Microsoft.AspNetCore.App.Runtime.osx-x64 --version 5.0.14
  ```

- Microsoft.AspNetCore.App.Runtime.win-arm (NuGet): upgrade to 5.0.14 or later

  ```sh
  dotnet add package Microsoft.AspNetCore.App.Runtime.win-arm --version 5.0.14
  ```

- Microsoft.AspNetCore.App.Runtime.win-arm64 (NuGet): upgrade to 5.0.14 or later

  ```sh
  dotnet add package Microsoft.AspNetCore.App.Runtime.win-arm64 --version 5.0.14
  ```

- Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet): upgrade to 5.0.14 or later

  ```sh
  dotnet add package Microsoft.AspNetCore.App.Runtime.win-x64 --version 5.0.14
  ```

- Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet): upgrade to 5.0.14 or later

  ```sh
  dotnet add package Microsoft.AspNetCore.App.Runtime.win-x86 --version 5.0.14
  ```


## Affected products

- Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet) ECOSYSTEM:introduced=5.0.0,fixed=5.0.14
- Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet) ECOSYSTEM:introduced=5.0.0,fixed=5.0.14
- Microsoft.AspNetCore.App.Runtime.linux-musl-arm (NuGet) ECOSYSTEM:introduced=5.0.0,fixed=5.0.14
- Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet) ECOSYSTEM:introduced=5.0.0,fixed=5.0.14
- Microsoft.AspNetCore.App.Runtime.linux-musl-x64 (NuGet) ECOSYSTEM:introduced=5.0.0,fixed=5.0.14
- Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet) ECOSYSTEM:introduced=5.0.0,fixed=5.0.14
- Microsoft.AspNetCore.App.Runtime.osx-arm64 (NuGet) ECOSYSTEM:introduced=6.0.0,fixed=6.0.2
- Microsoft.AspNetCore.App.Runtime.osx-x64 (NuGet) ECOSYSTEM:introduced=5.0.0,fixed=5.0.14
- Microsoft.AspNetCore.App.Runtime.win-arm (NuGet) ECOSYSTEM:introduced=5.0.0,fixed=5.0.14
- Microsoft.AspNetCore.App.Runtime.win-arm64 (NuGet) ECOSYSTEM:introduced=5.0.0,fixed=5.0.14
- Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet) ECOSYSTEM:introduced=5.0.0,fixed=5.0.14
- Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet) ECOSYSTEM:introduced=5.0.0,fixed=5.0.14

## Identifiers

- CVE-2022-21986
- GHSA-x459-p2rx-f8ff

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