# CVE-2020-1108: .NET Core & .NET Framework Denial of Service Vulnerability

Source: https://junglewise.ai/threats/cve-2020-1108-net-core-net-framework-denial-of-service-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2022-05-24  
License: CC BY 4.0 with a link back

CVE-2020-1108 · Severity: low · CVSS 3.1 · Published 2022-05-24

.NET Core & .NET Framework Denial of Service Vulnerability

Technologies: [Microsoft.NETCore.App (NuGet)](https://junglewise.ai/threats/technologies/microsoft-netcore-app), [Microsoft.NetCore.App.Runtime.linux-arm (NuGet)](https://junglewise.ai/threats/technologies/microsoft-netcore-app-runtime-linux-arm), [Microsoft.NetCore.App.Runtime.linux-arm64 (NuGet)](https://junglewise.ai/threats/technologies/microsoft-netcore-app-runtime-linux-arm64), [Microsoft.NetCore.App.Runtime.linux-musl-arm64 (NuGet)](https://junglewise.ai/threats/technologies/microsoft-netcore-app-runtime-linux-musl-arm64), [Microsoft.NetCore.App.Runtime.linux-musl-x64 (NuGet)](https://junglewise.ai/threats/technologies/microsoft-netcore-app-runtime-linux-musl-x64), [Microsoft.NetCore.App.Runtime.linux-x64 (NuGet)](https://junglewise.ai/threats/technologies/microsoft-netcore-app-runtime-linux-x64), [Microsoft.NetCore.App.Runtime.osx-x64 (NuGet)](https://junglewise.ai/threats/technologies/microsoft-netcore-app-runtime-osx-x64), [Microsoft.NETCore.App.Runtime.rhel.6-x64 (NuGet)](https://junglewise.ai/threats/technologies/microsoft-netcore-app-runtime-rhel-6-x64), [Microsoft.NetCore.App.Runtime.win-arm (NuGet)](https://junglewise.ai/threats/technologies/microsoft-netcore-app-runtime-win-arm), [Microsoft.NetCore.App.Runtime.win-arm64 (NuGet)](https://junglewise.ai/threats/technologies/microsoft-netcore-app-runtime-win-arm64), [Microsoft.NetCore.App.Runtime.win-x64 (NuGet)](https://junglewise.ai/threats/technologies/microsoft-netcore-app-runtime-win-x64), [Microsoft.NetCore.App.Runtime.win-x86 (NuGet)](https://junglewise.ai/threats/technologies/microsoft-netcore-app-runtime-win-x86). Vendors: [NuGet](https://junglewise.ai/threats/vendors/nuget).

## Quick answers

**Is CVE-2020-1108 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2020-1108 being exploited in the wild.

**How severe is CVE-2020-1108?** Low severity, with a CVSS score of 3.1, published 24 May 2022.

**Which products and versions are affected?** Microsoft.NETCore.App (NuGet) ECOSYSTEM:introduced=2.1.0,fixed=2.1.18; Microsoft.NetCore.App.Runtime.linux-arm (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.4; Microsoft.NetCore.App.Runtime.linux-arm64 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.4; Microsoft.NetCore.App.Runtime.linux-musl-arm64 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.4; and 8 more.

**Is there a fix for CVE-2020-1108?** Yes. Microsoft.NETCore.App (NuGet): upgrade to 2.1.18 or later; Microsoft.NetCore.App.Runtime.linux-arm (NuGet): upgrade to 3.1.4 or later; Microsoft.NetCore.App.Runtime.linux-arm64 (NuGet): upgrade to 3.1.4 or later; Microsoft.NetCore.App.Runtime.linux-musl-arm64 (NuGet): upgrade to 3.1.4 or later; Microsoft.NetCore.App.Runtime.linux-musl-x64 (NuGet): upgrade to 3.1.4 or later; Microsoft.NetCore.App.Runtime.linux-x64 (NuGet): upgrade to 3.1.4 or later; Microsoft.NetCore.App.Runtime.osx-x64 (NuGet): upgrade to 3.1.4 or later; Microsoft.NETCore.App.Runtime.rhel.6-x64 (NuGet): upgrade to 3.1.4 or later; Microsoft.NetCore.App.Runtime.win-arm (NuGet): upgrade to 3.1.4 or later; Microsoft.NetCore.App.Runtime.win-arm64 (NuGet): upgrade to 3.1.4 or later; Microsoft.NetCore.App.Runtime.win-x64 (NuGet): upgrade to 3.1.4 or later; Microsoft.NetCore.App.Runtime.win-x86 (NuGet): upgrade to 3.1.4 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2020-1108?** Check whether you run Microsoft.NETCore.App (NuGet), Microsoft.NetCore.App.Runtime.linux-arm (NuGet), Microsoft.NetCore.App.Runtime.linux-arm64 (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.NETCore.App (NuGet): upgrade to 2.1.18 or later

  ```sh
  dotnet add package Microsoft.NETCore.App --version 2.1.18
  ```

- Microsoft.NetCore.App.Runtime.linux-arm (NuGet): upgrade to 3.1.4 or later

  ```sh
  dotnet add package Microsoft.NetCore.App.Runtime.linux-arm --version 3.1.4
  ```

- Microsoft.NetCore.App.Runtime.linux-arm64 (NuGet): upgrade to 3.1.4 or later

  ```sh
  dotnet add package Microsoft.NetCore.App.Runtime.linux-arm64 --version 3.1.4
  ```

- Microsoft.NetCore.App.Runtime.linux-musl-arm64 (NuGet): upgrade to 3.1.4 or later

  ```sh
  dotnet add package Microsoft.NetCore.App.Runtime.linux-musl-arm64 --version 3.1.4
  ```

- Microsoft.NetCore.App.Runtime.linux-musl-x64 (NuGet): upgrade to 3.1.4 or later

  ```sh
  dotnet add package Microsoft.NetCore.App.Runtime.linux-musl-x64 --version 3.1.4
  ```

- Microsoft.NetCore.App.Runtime.linux-x64 (NuGet): upgrade to 3.1.4 or later

  ```sh
  dotnet add package Microsoft.NetCore.App.Runtime.linux-x64 --version 3.1.4
  ```

- Microsoft.NetCore.App.Runtime.osx-x64 (NuGet): upgrade to 3.1.4 or later

  ```sh
  dotnet add package Microsoft.NetCore.App.Runtime.osx-x64 --version 3.1.4
  ```

- Microsoft.NETCore.App.Runtime.rhel.6-x64 (NuGet): upgrade to 3.1.4 or later

  ```sh
  dotnet add package Microsoft.NETCore.App.Runtime.rhel.6-x64 --version 3.1.4
  ```

- Microsoft.NetCore.App.Runtime.win-arm (NuGet): upgrade to 3.1.4 or later

  ```sh
  dotnet add package Microsoft.NetCore.App.Runtime.win-arm --version 3.1.4
  ```

- Microsoft.NetCore.App.Runtime.win-arm64 (NuGet): upgrade to 3.1.4 or later

  ```sh
  dotnet add package Microsoft.NetCore.App.Runtime.win-arm64 --version 3.1.4
  ```

- Microsoft.NetCore.App.Runtime.win-x64 (NuGet): upgrade to 3.1.4 or later

  ```sh
  dotnet add package Microsoft.NetCore.App.Runtime.win-x64 --version 3.1.4
  ```

- Microsoft.NetCore.App.Runtime.win-x86 (NuGet): upgrade to 3.1.4 or later

  ```sh
  dotnet add package Microsoft.NetCore.App.Runtime.win-x86 --version 3.1.4
  ```


## Affected products

- Microsoft.NETCore.App (NuGet) ECOSYSTEM:introduced=2.1.0,fixed=2.1.18
- Microsoft.NetCore.App.Runtime.linux-arm (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.4
- Microsoft.NetCore.App.Runtime.linux-arm64 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.4
- Microsoft.NetCore.App.Runtime.linux-musl-arm64 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.4
- Microsoft.NetCore.App.Runtime.linux-musl-x64 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.4
- Microsoft.NetCore.App.Runtime.linux-x64 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.4
- Microsoft.NetCore.App.Runtime.osx-x64 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.4
- Microsoft.NETCore.App.Runtime.rhel.6-x64 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.4
- Microsoft.NetCore.App.Runtime.win-arm (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.4
- Microsoft.NetCore.App.Runtime.win-arm64 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.4
- Microsoft.NetCore.App.Runtime.win-x64 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.4
- Microsoft.NetCore.App.Runtime.win-x86 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.4

## Identifiers

- CVE-2020-1108
- GHSA-3w5p-jhp5-c29q

## Related threats

- [Microsoft Visual Studio heap buffer overflow RCE](https://junglewise.ai/threats/duplicate-advisory-microsoft-security-advisory-visual-studio-remote-224be73b)
- [Microsoft Visual Studio heap-based buffer overflow](https://junglewise.ai/threats/duplicate-advisory-microsoft-security-advisory-visual-studio-remote-6a4b9d28)
- [Microsoft Visual Studio deserialization remote code execution](https://junglewise.ai/threats/duplicate-advisory-microsoft-security-advisory-visual-studio-remote-1eb2f932)
- [Microsoft Visual Studio heap-based buffer overflow](https://junglewise.ai/threats/duplicate-advisory-microsoft-security-advisory-visual-studio-remote-ba83a5c9)
- [Microsoft Visual Studio stack-based buffer overflow](https://junglewise.ai/threats/duplicate-advisory-microsoft-security-advisory-visual-studio-remote-d956164d)