CVE-2017-11883: Denial of service in ASP.NET Core

CVE-2017-11883 · Severity: low · CVSS 3 · Published 2022-05-13

Denial of service in ASP.NET Core

Technologies: Microsoft.AspNetCore.Server.HttpSys (NuGet). Vendors: NuGet.

Quick answers

Is CVE-2017-11883 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2017-11883 being exploited in the wild.
How severe is CVE-2017-11883?
Low severity, with a CVSS score of 3, published 13 May 2022.
Which products and versions are affected?
Microsoft.AspNetCore.Server.HttpSys (NuGet) ECOSYSTEM:introduced=2.0.0,fixed=2.0.2; Microsoft.AspNetCore.Server.WebListener (NuGet) ECOSYSTEM:introduced=1.0.0,fixed=1.0.6; Microsoft.Net.Http.Server (NuGet) ECOSYSTEM:introduced=1.0.0,fixed=1.0.6.
Is there a fix for CVE-2017-11883?
Yes. Microsoft.AspNetCore.Server.HttpSys (NuGet): upgrade to 2.0.2 or later; Microsoft.AspNetCore.Server.WebListener (NuGet): upgrade to 1.0.6 or later; Microsoft.Net.Http.Server (NuGet): upgrade to 1.0.6 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2017-11883?
Check whether you run Microsoft.AspNetCore.Server.HttpSys (NuGet), Microsoft.AspNetCore.Server.WebListener (NuGet) or Microsoft.Net.Http.Server (NuGet) 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.Server.HttpSys (NuGet): upgrade to 2.0.2 or later
    dotnet add package Microsoft.AspNetCore.Server.HttpSys --version 2.0.2
  • Microsoft.AspNetCore.Server.WebListener (NuGet): upgrade to 1.0.6 or later
    dotnet add package Microsoft.AspNetCore.Server.WebListener --version 1.0.6
  • Microsoft.Net.Http.Server (NuGet): upgrade to 1.0.6 or later
    dotnet add package Microsoft.Net.Http.Server --version 1.0.6

Affected products

  • Microsoft.AspNetCore.Server.HttpSys (NuGet) ECOSYSTEM:introduced=2.0.0,fixed=2.0.2
  • Microsoft.AspNetCore.Server.WebListener (NuGet) ECOSYSTEM:introduced=1.0.0,fixed=1.0.6
  • Microsoft.Net.Http.Server (NuGet) ECOSYSTEM:introduced=1.0.0,fixed=1.0.6

Identifiers

  • CVE-2017-11883
  • GHSA-f9jc-rrm2-pmfg

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