CVE-2024-11716

Summary

While assignment of a user to a team (bracket) in CTFd should be possible only once, at the registration, a flaw in logic implementation allows an authenticated user to reset it's bracket and then pick a new one, joining another team while a competition is already ongoing. This issue impacts releases from 3.7.0 up to 3.7.4 and was addressed by pull request 2636 https://github.com/CTFd/CTFd/pull/2636  included in 3.7.5 release.

Affected Software

Weaknesses

• CWE-837: CWE-837 Improper Enforcement of a Single, Unique Action

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: no
  • Technical Impact: partial

Additional References

• https://seclists.org/fulldisclosure/2024/Dec/21

CVE Program Container

Additional References

• http://seclists.org/fulldisclosure/2024/Dec/21

References

• https://github.com/CTFd/CTFd/pull/2636
• https://cert.pl/en/posts/2025/01/CVE-2024-11716
• https://ctfd.io/
• https://blog.ctfd.io/ctfd-3-7-5/
• https://seclists.org/fulldisclosure/2024/Dec/21

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