CVE-2020-1045: Cookie parsing failure

Quick answers

Is CVE-2020-1045 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2020-1045 being exploited in the wild.

How severe is CVE-2020-1045?

Low severity, with a CVSS score of 3.1, published 24 May 2022.

Which products and versions are affected?

Microsoft.AspNetCore.App (NuGet) ECOSYSTEM:introduced=0,fixed=2.1.22; Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.8; Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.8; Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.8; and 9 more.

Is there a fix for CVE-2020-1045?

Yes. Microsoft.AspNetCore.App (NuGet): upgrade to 2.1.22 or later; Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet): upgrade to 3.1.8 or later; Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet): upgrade to 3.1.8 or later; Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet): upgrade to 3.1.8 or later; Microsoft.AspNetCore.App.Runtime.linux-musl-x64 (NuGet): upgrade to 3.1.8 or later; Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet): upgrade to 3.1.8 or later; Microsoft.AspNetCore.App.Runtime.osx-x64 (NuGet): upgrade to 3.1.8 or later; Microsoft.AspNetCore.App.Runtime.win-arm (NuGet): upgrade to 3.1.8 or later; Microsoft.AspNetCore.App.Runtime.win-arm64 (NuGet): upgrade to 3.1.8 or later; Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet): upgrade to 3.1.8 or later; Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet): upgrade to 3.1.8 or later; Microsoft.AspNetCore.Http (NuGet): upgrade to 2.1.22 or later; Microsoft.Owin (NuGet): upgrade to 4.1.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

Am I affected by CVE-2020-1045?

Check whether you run Microsoft.AspNetCore.App (NuGet), Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet), Microsoft.AspNetCore.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.AspNetCore.App (NuGet): upgrade to 2.1.22 or later

  dotnet add package Microsoft.AspNetCore.App --version 2.1.22

• Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet): upgrade to 3.1.8 or later

  dotnet add package Microsoft.AspNetCore.App.Runtime.linux-arm --version 3.1.8

• Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet): upgrade to 3.1.8 or later

  dotnet add package Microsoft.AspNetCore.App.Runtime.linux-arm64 --version 3.1.8

• Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet): upgrade to 3.1.8 or later

  dotnet add package Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 --version 3.1.8

• Microsoft.AspNetCore.App.Runtime.linux-musl-x64 (NuGet): upgrade to 3.1.8 or later

  dotnet add package Microsoft.AspNetCore.App.Runtime.linux-musl-x64 --version 3.1.8

• Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet): upgrade to 3.1.8 or later

  dotnet add package Microsoft.AspNetCore.App.Runtime.linux-x64 --version 3.1.8

• Microsoft.AspNetCore.App.Runtime.osx-x64 (NuGet): upgrade to 3.1.8 or later

  dotnet add package Microsoft.AspNetCore.App.Runtime.osx-x64 --version 3.1.8

• Microsoft.AspNetCore.App.Runtime.win-arm (NuGet): upgrade to 3.1.8 or later

  dotnet add package Microsoft.AspNetCore.App.Runtime.win-arm --version 3.1.8

• Microsoft.AspNetCore.App.Runtime.win-arm64 (NuGet): upgrade to 3.1.8 or later

  dotnet add package Microsoft.AspNetCore.App.Runtime.win-arm64 --version 3.1.8

• Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet): upgrade to 3.1.8 or later

  dotnet add package Microsoft.AspNetCore.App.Runtime.win-x64 --version 3.1.8

• Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet): upgrade to 3.1.8 or later

  dotnet add package Microsoft.AspNetCore.App.Runtime.win-x86 --version 3.1.8

• Microsoft.AspNetCore.Http (NuGet): upgrade to 2.1.22 or later

  dotnet add package Microsoft.AspNetCore.Http --version 2.1.22

• Microsoft.Owin (NuGet): upgrade to 4.1.1 or later

  dotnet add package Microsoft.Owin --version 4.1.1

Affected products

• Microsoft.AspNetCore.App (NuGet) ECOSYSTEM:introduced=0,fixed=2.1.22
• Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.8
• Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.8
• Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.8
• Microsoft.AspNetCore.App.Runtime.linux-musl-x64 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.8
• Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.8
• Microsoft.AspNetCore.App.Runtime.osx-x64 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.8
• Microsoft.AspNetCore.App.Runtime.win-arm (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.8
• Microsoft.AspNetCore.App.Runtime.win-arm64 (NuGet) ECOSYSTEM:introduced=3.1.5,fixed=3.1.8
• Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.8
• Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet) ECOSYSTEM:introduced=3.1.0,fixed=3.1.8
• Microsoft.AspNetCore.Http (NuGet) ECOSYSTEM:introduced=0,fixed=2.1.22
• Microsoft.Owin (NuGet) ECOSYSTEM:introduced=0,fixed=4.1.1

Identifiers

• CVE-2020-1045
• GHSA-hxrm-9w7p-39cc