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CVE-2023-47634: Race condition in Endorsements

February 20, 2024 (updated February 14, 2025)

A race condition in the endorsement of resources (for instance, a proposal) allows a user to make more than once endorsement.

To exploit this vulnerability, the request to set an endorsement must be sent several times in parallel.

References

  • github.com/advisories/GHSA-r275-j57c-7mf2
  • github.com/decidim/decidim
  • github.com/decidim/decidim/commit/5c5ee7a50d75c10643dd8c495e2517641e4d74db
  • github.com/decidim/decidim/commit/7b840d2c37a562709f4481db644d8c43add28536
  • github.com/decidim/decidim/releases/tag/v0.26.9
  • github.com/decidim/decidim/releases/tag/v0.27.5
  • github.com/decidim/decidim/releases/tag/v0.28.0
  • github.com/decidim/decidim/security/advisories/GHSA-r275-j57c-7mf2
  • github.com/rubysec/ruby-advisory-db/blob/master/gems/decidim/CVE-2023-47634.yml
  • nvd.nist.gov/vuln/detail/CVE-2023-47634

Code Behaviors & Features

Detect and mitigate CVE-2023-47634 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Learn more about Dependency Scanning →

Affected versions

All versions starting from 0.10.0 before 0.26.9, all versions starting from 0.27.0 before 0.27.5

Fixed versions

  • 0.26.9
  • 0.27.5

Solution

Upgrade to versions 0.26.9, 0.27.5 or above.

Impact 3.1 LOW

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

Learn more about CVSS

Weakness

  • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Source file

gem/decidim/CVE-2023-47634.yml

Spotted a mistake? Edit the file on GitLab.

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