CVE-2024-11716

Description

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.

Reserved 2024-11-25 | Published 2025-01-02 | Updated 2025-01-02 | Assigner CERT-PL

Problem types

CWE-837 Improper Enforcement of a Single, Unique Action

Product status

Default status
unaffected

3.7.0
affected

Credits

Błażej Adamczyk (efigo.pl) finder

References

github.com/CTFd/CTFd/pull/2636 patch

cert.pl/en/posts/2025/01/CVE-2024-11716 third-party-advisory

ctfd.io/ product

blog.ctfd.io/ctfd-3-7-5/ vendor-advisory

seclists.org/fulldisclosure/2024/Dec/21 mailing-list exploit

cve.org (CVE-2024-11716)

nvd.nist.gov (CVE-2024-11716)

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