Cross-site Request Forgery (CSRF) Affecting flask-security-too package, versions [3.2.0, 3.4.5)


Severity

Recommended
0.0
low
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about Cross-site Request Forgery (CSRF) vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-PYTHON-FLASKSECURITYTOO-1244523
  • published9 Apr 2021
  • disclosed8 Apr 2021
  • creditUnknown

Introduced: 8 Apr 2021

CVE NOT AVAILABLE CWE-352  (opens in a new tab)

How to fix?

Upgrade Flask-Security-Too to version 3.4.5 or higher.

Overview

Affected versions of this package are vulnerable to Cross-site Request Forgery (CSRF). When a user is setting up two-factor authentication using an authenticator app, a QRcode is generated and made available via a GET request to /tf-qrcode. Since GETs do not have any CSRF protection, it is possible a malicious 3rd party could access the QRcode and therefore gain access to two-factor authentication codes. Note that the /tf-qrcode endpoint is ONLY accessible while the user is initially setting up their device. Once setup is complete, there is no vulnerability.

CVSS Scores

version 3.1