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.

Weakness Type (CWE)

CWE-837 CWE-837

References

Other References

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

Frequently Asked Questions

What is CVE-2024-11716? +

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.

How do I check if I'm vulnerable to CVE-2024-11716? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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