CVE-2020-7245
Last modified
CVE-2020-7245 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. EPSS estimates a 1.17% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Ctfd | Ctfd | >= 2.0.0, <= 2.2.2 |
References
- https://github.com/CTFd/CTFd/pull/1218Third Party Advisory
- https://github.com/CTFd/CTFd/releases/tag/2.2.3Release Notes
- https://github.com/CTFd/CTFd/pull/1218Third Party Advisory
- https://github.com/CTFd/CTFd/releases/tag/2.2.3Release Notes
Timeline
- Published
- Last Modified
- Status
- Modified
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