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CVE-2024-21319: Microsoft ASP.NET Core project templates vulnerable to denial of service

January 9, 2024 (updated June 4, 2025)

A Denial of Service vulnerability exists in ASP.NET Core project templates which utilize JWT-based authentication tokens. This vulnerability allows an unauthenticated client to consume arbitrarily large amounts of server memory, potentially triggering an out-of-memory condition on the server and making the server no longer able to respond to legitimate requests.

References

  • github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/security/advisories/GHSA-8g9c-28fc-mcx2
  • github.com/advisories/GHSA-59j7-ghrg-fj52
  • github.com/dotnet/announcements/issues/290
  • github.com/dotnet/aspnetcore
  • github.com/dotnet/aspnetcore/security/advisories/GHSA-59j7-ghrg-fj52
  • nvd.nist.gov/vuln/detail/CVE-2024-21319

Code Behaviors & Features

Detect and mitigate CVE-2024-21319 with GitLab Dependency Scanning

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Affected versions

All versions before 5.7.0, all versions starting from 6.5.0 before 6.34.0, all versions starting from 7.0.0-preview before 7.1.2

Fixed versions

  • 5.7.0
  • 6.34.0
  • 7.1.2

Solution

Upgrade to versions 5.7.0, 6.34.0, 7.1.2 or above.

Impact 6.8 MEDIUM

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H

Learn more about CVSS

Weakness

  • CWE-400: Uncontrolled Resource Consumption

Source file

nuget/Microsoft.IdentityModel.JsonWebTokens/CVE-2024-21319.yml

Spotted a mistake? Edit the file on GitLab.

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