CVE-2021-34485: .NET Core Information Disclosure Vulnerability

CVE-2021-34485 · Severity: low · CVSS 3.1 · Published 2022-10-20

.NET Core Information Disclosure Vulnerability

Technologies: Microsoft.NETCore.App (NuGet), Microsoft.NetCore.App.Runtime.linux-arm (NuGet), Microsoft.NetCore.App.Runtime.linux-arm64 (NuGet), Microsoft.NetCore.App.Runtime.linux-musl-arm (NuGet), Microsoft.NetCore.App.Runtime.linux-musl-arm64 (NuGet), Microsoft.NetCore.App.Runtime.linux-musl-x64 (NuGet), Microsoft.NetCore.App.Runtime.linux-x64 (NuGet), Microsoft.NETCore.App.Runtime.Mono.linux-arm (NuGet), Microsoft.NETCore.App.Runtime.Mono.linux-arm64 (NuGet), Microsoft.NETCore.App.Runtime.Mono.linux-musl-x64 (NuGet), Microsoft.NETCore.App.Runtime.Mono.linux-x64 (NuGet), Microsoft.NETCore.App.Runtime.Mono.LLVM.AOT.linux-arm64 (NuGet), Microsoft.NETCore.App.Runtime.Mono.LLVM.AOT.linux-x64 (NuGet), Microsoft.NETCore.App.Runtime.Mono.LLVM.AOT.osx-x64 (NuGet), Microsoft.NETCore.App.Runtime.Mono.LLVM.linux-arm64 (NuGet), Microsoft.NETCore.App.Runtime.Mono.LLVM.linux-x64 (NuGet), Microsoft.NETCore.App.Runtime.Mono.LLVM.osx-x64 (NuGet), Microsoft.NETCore.App.Runtime.Mono.osx-x64 (NuGet), Microsoft.NetCore.App.Runtime.osx-x64 (NuGet), Microsoft.NETCore.App.Runtime.rhel.6-x64 (NuGet), Microsoft.NetCore.App.Runtime.win-arm (NuGet), Microsoft.NetCore.App.Runtime.win-arm64 (NuGet), Microsoft.NetCore.App.Runtime.win-x64 (NuGet), Microsoft.NetCore.App.Runtime.win-x86 (NuGet). Vendors: NuGet.

Quick answers

Is CVE-2021-34485 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2021-34485 being exploited in the wild.
How severe is CVE-2021-34485?
Low severity, with a CVSS score of 3.1, published 20 October 2022.
Which products and versions are affected?
Microsoft.NETCore.App (NuGet) ECOSYSTEM:introduced=2.1.0,fixed=2.1.29; Microsoft.NetCore.App.Runtime.linux-arm (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.18; Microsoft.NetCore.App.Runtime.linux-arm64 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.18; Microsoft.NetCore.App.Runtime.linux-musl-arm (NuGet) ECOSYSTEM:introduced=5.0.0,fixed=5.0.9; and 20 more.
Is there a fix for CVE-2021-34485?
Yes. Microsoft.NETCore.App (NuGet): upgrade to 2.1.29 or later; Microsoft.NetCore.App.Runtime.linux-arm (NuGet): upgrade to 3.1.18 or later; Microsoft.NetCore.App.Runtime.linux-arm64 (NuGet): upgrade to 3.1.18 or later; Microsoft.NetCore.App.Runtime.linux-musl-arm (NuGet): upgrade to 5.0.9 or later; Microsoft.NetCore.App.Runtime.linux-musl-arm64 (NuGet): upgrade to 3.1.18 or later; Microsoft.NetCore.App.Runtime.linux-musl-x64 (NuGet): upgrade to 3.1.18 or later; Microsoft.NetCore.App.Runtime.linux-x64 (NuGet): upgrade to 3.1.18 or later; Microsoft.NETCore.App.Runtime.Mono.linux-arm (NuGet): upgrade to 5.0.9 or later; Microsoft.NETCore.App.Runtime.Mono.linux-arm64 (NuGet): upgrade to 5.0.9 or later; Microsoft.NETCore.App.Runtime.Mono.linux-musl-x64 (NuGet): upgrade to 5.0.9 or later; Microsoft.NETCore.App.Runtime.Mono.linux-x64 (NuGet): upgrade to 5.0.9 or later; Microsoft.NETCore.App.Runtime.Mono.LLVM.AOT.linux-arm64 (NuGet): upgrade to 5.0.9 or later; Microsoft.NETCore.App.Runtime.Mono.LLVM.AOT.linux-x64 (NuGet): upgrade to 5.0.9 or later; Microsoft.NETCore.App.Runtime.Mono.LLVM.AOT.osx-x64 (NuGet): upgrade to 5.0.9 or later; Microsoft.NETCore.App.Runtime.Mono.LLVM.linux-arm64 (NuGet): upgrade to 5.0.9 or later; Microsoft.NETCore.App.Runtime.Mono.LLVM.linux-x64 (NuGet): upgrade to 5.0.9 or later; Microsoft.NETCore.App.Runtime.Mono.LLVM.osx-x64 (NuGet): upgrade to 5.0.9 or later; Microsoft.NETCore.App.Runtime.Mono.osx-x64 (NuGet): upgrade to 5.0.9 or later; Microsoft.NetCore.App.Runtime.osx-x64 (NuGet): upgrade to 3.1.18 or later; Microsoft.NETCore.App.Runtime.rhel.6-x64 (NuGet): upgrade to 3.1.18 or later; Microsoft.NetCore.App.Runtime.win-arm (NuGet): upgrade to 3.1.18 or later; Microsoft.NetCore.App.Runtime.win-arm64 (NuGet): upgrade to 3.1.18 or later; Microsoft.NetCore.App.Runtime.win-x64 (NuGet): upgrade to 3.1.18 or later; Microsoft.NetCore.App.Runtime.win-x86 (NuGet): upgrade to 3.1.18 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2021-34485?
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 2.1.29 or later
    dotnet add package Microsoft.NETCore.App --version 2.1.29
  • Microsoft.NetCore.App.Runtime.linux-arm (NuGet): upgrade to 3.1.18 or later
    dotnet add package Microsoft.NetCore.App.Runtime.linux-arm --version 3.1.18
  • Microsoft.NetCore.App.Runtime.linux-arm64 (NuGet): upgrade to 3.1.18 or later
    dotnet add package Microsoft.NetCore.App.Runtime.linux-arm64 --version 3.1.18
  • Microsoft.NetCore.App.Runtime.linux-musl-arm (NuGet): upgrade to 5.0.9 or later
    dotnet add package Microsoft.NetCore.App.Runtime.linux-musl-arm --version 5.0.9
  • Microsoft.NetCore.App.Runtime.linux-musl-arm64 (NuGet): upgrade to 3.1.18 or later
    dotnet add package Microsoft.NetCore.App.Runtime.linux-musl-arm64 --version 3.1.18
  • Microsoft.NetCore.App.Runtime.linux-musl-x64 (NuGet): upgrade to 3.1.18 or later
    dotnet add package Microsoft.NetCore.App.Runtime.linux-musl-x64 --version 3.1.18
  • Microsoft.NetCore.App.Runtime.linux-x64 (NuGet): upgrade to 3.1.18 or later
    dotnet add package Microsoft.NetCore.App.Runtime.linux-x64 --version 3.1.18
  • Microsoft.NETCore.App.Runtime.Mono.linux-arm (NuGet): upgrade to 5.0.9 or later
    dotnet add package Microsoft.NETCore.App.Runtime.Mono.linux-arm --version 5.0.9
  • Microsoft.NETCore.App.Runtime.Mono.linux-arm64 (NuGet): upgrade to 5.0.9 or later
    dotnet add package Microsoft.NETCore.App.Runtime.Mono.linux-arm64 --version 5.0.9
  • Microsoft.NETCore.App.Runtime.Mono.linux-musl-x64 (NuGet): upgrade to 5.0.9 or later
    dotnet add package Microsoft.NETCore.App.Runtime.Mono.linux-musl-x64 --version 5.0.9
  • Microsoft.NETCore.App.Runtime.Mono.linux-x64 (NuGet): upgrade to 5.0.9 or later
    dotnet add package Microsoft.NETCore.App.Runtime.Mono.linux-x64 --version 5.0.9
  • Microsoft.NETCore.App.Runtime.Mono.LLVM.AOT.linux-arm64 (NuGet): upgrade to 5.0.9 or later
    dotnet add package Microsoft.NETCore.App.Runtime.Mono.LLVM.AOT.linux-arm64 --version 5.0.9
  • Microsoft.NETCore.App.Runtime.Mono.LLVM.AOT.linux-x64 (NuGet): upgrade to 5.0.9 or later
    dotnet add package Microsoft.NETCore.App.Runtime.Mono.LLVM.AOT.linux-x64 --version 5.0.9
  • Microsoft.NETCore.App.Runtime.Mono.LLVM.AOT.osx-x64 (NuGet): upgrade to 5.0.9 or later
    dotnet add package Microsoft.NETCore.App.Runtime.Mono.LLVM.AOT.osx-x64 --version 5.0.9
  • Microsoft.NETCore.App.Runtime.Mono.LLVM.linux-arm64 (NuGet): upgrade to 5.0.9 or later
    dotnet add package Microsoft.NETCore.App.Runtime.Mono.LLVM.linux-arm64 --version 5.0.9
  • Microsoft.NETCore.App.Runtime.Mono.LLVM.linux-x64 (NuGet): upgrade to 5.0.9 or later
    dotnet add package Microsoft.NETCore.App.Runtime.Mono.LLVM.linux-x64 --version 5.0.9
  • Microsoft.NETCore.App.Runtime.Mono.LLVM.osx-x64 (NuGet): upgrade to 5.0.9 or later
    dotnet add package Microsoft.NETCore.App.Runtime.Mono.LLVM.osx-x64 --version 5.0.9
  • Microsoft.NETCore.App.Runtime.Mono.osx-x64 (NuGet): upgrade to 5.0.9 or later
    dotnet add package Microsoft.NETCore.App.Runtime.Mono.osx-x64 --version 5.0.9
  • Microsoft.NetCore.App.Runtime.osx-x64 (NuGet): upgrade to 3.1.18 or later
    dotnet add package Microsoft.NetCore.App.Runtime.osx-x64 --version 3.1.18
  • Microsoft.NETCore.App.Runtime.rhel.6-x64 (NuGet): upgrade to 3.1.18 or later
    dotnet add package Microsoft.NETCore.App.Runtime.rhel.6-x64 --version 3.1.18
  • Microsoft.NetCore.App.Runtime.win-arm (NuGet): upgrade to 3.1.18 or later
    dotnet add package Microsoft.NetCore.App.Runtime.win-arm --version 3.1.18
  • Microsoft.NetCore.App.Runtime.win-arm64 (NuGet): upgrade to 3.1.18 or later
    dotnet add package Microsoft.NetCore.App.Runtime.win-arm64 --version 3.1.18
  • Microsoft.NetCore.App.Runtime.win-x64 (NuGet): upgrade to 3.1.18 or later
    dotnet add package Microsoft.NetCore.App.Runtime.win-x64 --version 3.1.18
  • Microsoft.NetCore.App.Runtime.win-x86 (NuGet): upgrade to 3.1.18 or later
    dotnet add package Microsoft.NetCore.App.Runtime.win-x86 --version 3.1.18

Affected products

  • Microsoft.NETCore.App (NuGet) ECOSYSTEM:introduced=2.1.0,fixed=2.1.29
  • Microsoft.NetCore.App.Runtime.linux-arm (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.18
  • Microsoft.NetCore.App.Runtime.linux-arm64 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.18
  • Microsoft.NetCore.App.Runtime.linux-musl-arm (NuGet) ECOSYSTEM:introduced=5.0.0,fixed=5.0.9
  • Microsoft.NetCore.App.Runtime.linux-musl-arm64 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.18
  • Microsoft.NetCore.App.Runtime.linux-musl-x64 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.18
  • Microsoft.NetCore.App.Runtime.linux-x64 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.18
  • Microsoft.NETCore.App.Runtime.Mono.linux-arm (NuGet) ECOSYSTEM:introduced=5.0.0,fixed=5.0.9
  • Microsoft.NETCore.App.Runtime.Mono.linux-arm64 (NuGet) ECOSYSTEM:introduced=5.0.0,fixed=5.0.9
  • Microsoft.NETCore.App.Runtime.Mono.linux-musl-x64 (NuGet) ECOSYSTEM:introduced=5.0.0,fixed=5.0.9
  • Microsoft.NETCore.App.Runtime.Mono.linux-x64 (NuGet) ECOSYSTEM:introduced=5.0.0,fixed=5.0.9
  • Microsoft.NETCore.App.Runtime.Mono.LLVM.AOT.linux-arm64 (NuGet) ECOSYSTEM:introduced=5.0.0,fixed=5.0.9
  • Microsoft.NETCore.App.Runtime.Mono.LLVM.AOT.linux-x64 (NuGet) ECOSYSTEM:introduced=5.0.0,fixed=5.0.9
  • Microsoft.NETCore.App.Runtime.Mono.LLVM.AOT.osx-x64 (NuGet) ECOSYSTEM:introduced=5.0.0,fixed=5.0.9
  • Microsoft.NETCore.App.Runtime.Mono.LLVM.linux-arm64 (NuGet) ECOSYSTEM:introduced=5.0.0,fixed=5.0.9
  • Microsoft.NETCore.App.Runtime.Mono.LLVM.linux-x64 (NuGet) ECOSYSTEM:introduced=5.0.0,fixed=5.0.9
  • Microsoft.NETCore.App.Runtime.Mono.LLVM.osx-x64 (NuGet) ECOSYSTEM:introduced=5.0.0,fixed=5.0.9
  • Microsoft.NETCore.App.Runtime.Mono.osx-x64 (NuGet) ECOSYSTEM:introduced=5.0.0,fixed=5.0.9
  • Microsoft.NetCore.App.Runtime.osx-x64 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.18
  • Microsoft.NETCore.App.Runtime.rhel.6-x64 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.18
  • Microsoft.NetCore.App.Runtime.win-arm (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.18
  • Microsoft.NetCore.App.Runtime.win-arm64 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.18
  • Microsoft.NetCore.App.Runtime.win-x64 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.18
  • Microsoft.NetCore.App.Runtime.win-x86 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.18

Identifiers

  • CVE-2021-34485
  • GHSA-vgwq-hfqc-58wv

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.