CVE-2020-7245 : What You Need to Know

CTFd v2.0.0 - v2.2.2 allows attackers to take over arbitrary accounts by exploiting incorrect username validation in the registration process.

Understanding CVE-2020-7245

CTFd v2.0.0 - v2.2.2 vulnerability allows account takeover through username manipulation.

What is CVE-2020-7245?

The vulnerability in CTFd v2.0.0 - v2.2.2 enables attackers to register an account with the victim's username by adding white space before and/or after the username, triggering a password reset.

The Impact of CVE-2020-7245

Attackers can take over arbitrary accounts if usernames are known and emails are enabled on the CTFd instance.
Exploiting the flaw requires registering with a username identical to the victim's but with added white space.

Technical Details of CVE-2020-7245

CTFd v2.0.0 - v2.2.2 vulnerability details.

Vulnerability Description

Incorrect username validation in the registration process allows account takeover.

Affected Systems and Versions

CTFd versions 2.0.0 to 2.2.2 are impacted.

Exploitation Mechanism

Registering with a manipulated username triggers a password reset, compromising the victim's account.

Mitigation and Prevention

Protecting against CVE-2020-7245.

Immediate Steps to Take

Upgrade CTFd to version 2.2.3 to patch the vulnerability.
Disable email notifications for account activities to reduce attack surface.

Long-Term Security Practices

Regularly monitor account activities for suspicious behavior.
Educate users on creating unique and secure usernames.

Patching and Updates

Apply patches and updates promptly to mitigate known vulnerabilities.