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CVE-2017-8700: Cross-origin Resource Sharing bypass in ASP.NET Core

May 13, 2022 (updated July 8, 2022)

ASP.NET Core 1.0, 1.1, and 2.0 allow an attacker to bypass Cross-origin Resource Sharing (CORS) configurations and retrieve normally restricted content from a web application, aka “ASP.NET Core Information Disclosure Vulnerability”.

References

  • github.com/advisories/GHSA-3rp6-rjw4-cq39
  • github.com/aspnet/Announcements/issues/279
  • github.com/github/advisory-database/issues/302
  • nvd.nist.gov/vuln/detail/CVE-2017-8700
  • portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8700

Code Behaviors & Features

Detect and mitigate CVE-2017-8700 with GitLab Dependency Scanning

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Affected versions

All versions starting from 1.0.0 before 1.0.6, all versions starting from 1.1.0 before 1.1.6

Fixed versions

  • 1.0.6
  • 1.1.6

Solution

Upgrade to versions 1.0.6, 1.1.6 or above.

Impact 7.5 HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Learn more about CVSS

Source file

nuget/Microsoft.AspNetCore.Mvc.Cors/CVE-2017-8700.yml

Spotted a mistake? Edit the file on GitLab.

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