Vulnerability · Published Jan 23, 2020 · Assigned by mitre
CVE-2020-7245
Critical 9.8
In plain English
A critical-severity security flaw in the affected software. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 67% of all known vulnerabilities).
Official description
Incorrect username validation in the registration process of CTFd v2.0.0 - v2.2.2 allows an attacker to take over an arbitrary account if the username is known and emails are enabled on the CTFd instance. To exploit the vulnerability, one must register with a username identical to the victim's username, but with white space inserted before and/or after the username. This will register the account with the same username as the victim. After initiating a password reset for the new account, CTFd will reset the victim's account password due to the username collision.
Affected products (as reported)
References
- https://github.com/CTFd/CTFd/pull/1218 x_refsource_MISC
- https://github.com/CTFd/CTFd/releases/tag/2.2.3 x_refsource_MISC