Vulnerability · Published Jan 2, 2025 · Assigned by CERT-PL

CVE-2024-11716

Medium 5.3

In plain English

A medium-severity security flaw in CTFd from CTFd. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 11.6% (higher than 96% of all known vulnerabilities).

Severity (CVSS 4.0)5.3Medium

Exploit odds (30 days)11.6%top 3.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
CTFd	CTFd	3.7.0 – through 3.7.4

Weakness: CWE-837 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

References

https://github.com/CTFd/CTFd/pull/2636 patch
https://cert.pl/en/posts/2025/01/CVE-2024-11716 third-party-advisory
https://ctfd.io/ product
https://blog.ctfd.io/ctfd-3-7-5/ vendor-advisory
https://seclists.org/fulldisclosure/2024/Dec/21 mailing-list, exploit
http://seclists.org/fulldisclosure/2024/Dec/21