CVE Vulnerability

CVE-2020-7245

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.

6.8 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

9.8 /10

CVSS v3.0 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/CTFd/CTFd/releases/tag/2.2.3 Release Notes
https://github.com/CTFd/CTFd/pull/1218 Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:ctfd:ctfd:*:*:*:*:*:*:*:*
Information

Published : 2020-01-23 11:15

Updated : 2020-01-31 04:02

NVD link : CVE-2020-7245

Mitre link : CVE-2020-7245

Products Affected
No products.
CWE
CWE-640

Weak Password Recovery Mechanism for Forgotten Password