CVE-2020-0603: Remote code execution in ASP.NET Core

CVE-2020-0603 · Severity: info · Published 2022-05-24

Remote code execution in ASP.NET Core

Technologies: Microsoft.AspNetCore.All (NuGet), Microsoft.AspNetCore.App (NuGet), Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet), Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet), Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet), Microsoft.AspNetCore.App.Runtime.linux-musl-x64 (NuGet), Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet), Microsoft.AspNetCore.App.Runtime.osx-x64 (NuGet), Microsoft.AspNetCore.App.Runtime.win-arm (NuGet), Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet), Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet). Vendors: NuGet.

Quick answers

Is CVE-2020-0603 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2020-0603 being exploited in the wild.
How severe is CVE-2020-0603?
Informational severity, published 24 May 2022.
Which products and versions are affected?
Microsoft.AspNetCore.All (NuGet) ECOSYSTEM:introduced=2.1.0,fixed=2.1.15; Microsoft.AspNetCore.App (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.1; Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.1; Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.1; and 8 more.
Is there a fix for CVE-2020-0603?
Yes. Microsoft.AspNetCore.All (NuGet): upgrade to 2.1.15 or later; Microsoft.AspNetCore.App (NuGet): upgrade to 3.1.1 or later; Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet): upgrade to 3.1.1 or later; Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet): upgrade to 3.1.1 or later; Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet): upgrade to 3.1.1 or later; Microsoft.AspNetCore.App.Runtime.linux-musl-x64 (NuGet): upgrade to 3.1.1 or later; Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet): upgrade to 3.1.1 or later; Microsoft.AspNetCore.App.Runtime.osx-x64 (NuGet): upgrade to 3.1.1 or later; Microsoft.AspNetCore.App.Runtime.win-arm (NuGet): upgrade to 3.1.1 or later; Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet): upgrade to 3.1.1 or later; Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet): upgrade to 3.1.1 or later; Microsoft.AspNetCore.Http.Connections (NuGet): upgrade to 1.0.15 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2020-0603?
Check whether you run Microsoft.AspNetCore.All (NuGet), Microsoft.AspNetCore.App (NuGet), Microsoft.AspNetCore.App.Runtime.linux-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.All (NuGet): upgrade to 2.1.15 or later
    dotnet add package Microsoft.AspNetCore.All --version 2.1.15
  • Microsoft.AspNetCore.App (NuGet): upgrade to 3.1.1 or later
    dotnet add package Microsoft.AspNetCore.App --version 3.1.1
  • Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet): upgrade to 3.1.1 or later
    dotnet add package Microsoft.AspNetCore.App.Runtime.linux-arm --version 3.1.1
  • Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet): upgrade to 3.1.1 or later
    dotnet add package Microsoft.AspNetCore.App.Runtime.linux-arm64 --version 3.1.1
  • Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet): upgrade to 3.1.1 or later
    dotnet add package Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 --version 3.1.1
  • Microsoft.AspNetCore.App.Runtime.linux-musl-x64 (NuGet): upgrade to 3.1.1 or later
    dotnet add package Microsoft.AspNetCore.App.Runtime.linux-musl-x64 --version 3.1.1
  • Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet): upgrade to 3.1.1 or later
    dotnet add package Microsoft.AspNetCore.App.Runtime.linux-x64 --version 3.1.1
  • Microsoft.AspNetCore.App.Runtime.osx-x64 (NuGet): upgrade to 3.1.1 or later
    dotnet add package Microsoft.AspNetCore.App.Runtime.osx-x64 --version 3.1.1
  • Microsoft.AspNetCore.App.Runtime.win-arm (NuGet): upgrade to 3.1.1 or later
    dotnet add package Microsoft.AspNetCore.App.Runtime.win-arm --version 3.1.1
  • Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet): upgrade to 3.1.1 or later
    dotnet add package Microsoft.AspNetCore.App.Runtime.win-x64 --version 3.1.1
  • Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet): upgrade to 3.1.1 or later
    dotnet add package Microsoft.AspNetCore.App.Runtime.win-x86 --version 3.1.1
  • Microsoft.AspNetCore.Http.Connections (NuGet): upgrade to 1.0.15 or later
    dotnet add package Microsoft.AspNetCore.Http.Connections --version 1.0.15

Affected products

  • Microsoft.AspNetCore.All (NuGet) ECOSYSTEM:introduced=2.1.0,fixed=2.1.15
  • Microsoft.AspNetCore.App (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.1
  • Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.1
  • Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.1
  • Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.1
  • Microsoft.AspNetCore.App.Runtime.linux-musl-x64 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.1
  • Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.1
  • Microsoft.AspNetCore.App.Runtime.osx-x64 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.1
  • Microsoft.AspNetCore.App.Runtime.win-arm (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.1
  • Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.1
  • Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.1
  • Microsoft.AspNetCore.Http.Connections (NuGet) ECOSYSTEM:introduced=1.0.0,fixed=1.0.15

Identifiers

  • CVE-2020-0603
  • GHSA-655q-9gvg-q4cm

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