CVE-2024-11716
CVE-2024-11716
In short
A flaw in CTFd allows an authenticated user to change their team assignment during an ongoing competition, even though they should only be able to join a team once at registration. This breaks the fairness of the competition by letting players switch teams mid-event.
Technical detail
The vulnerability exists in CTFd 3.7.0–3.7.4 due to improper logic validation when resetting a user's bracket assignment. An authenticated user can trigger a bracket reset and reassign themselves to a different team mid-competition, bypassing the intended one-time-only team assignment constraint. This impacts competition integrity and fairness.
Summary generated and translated by AI from the 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.
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
Affected products
CTFd · CTFdWant to know if your infrastructure is exposed to this?
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