QID 376262

Date Published: 2022-01-24

QID 376262: Python Flask-Security Plugin Open Redirect Vulnerability

Affected versions of this package are vulnerable to Open Redirect. When using the get_post_logout_redirect and get_post_login_redirect functions, it is possible to bypass URL validation and redirect a user to an arbitrary URL by providing multiple back slashes such as \evil.com/path.
This vulnerability is only exploitable if an alternative WSGI server other than Werkzeug is used, or the default behaviour of Werkzeug is modified using 'autocorrect_location_header=False'.

Affected Versions:
All versions of Flask-Security plugin are vulnerable

QID detection logic(Authenticated):
This QID checks for vulnerable versions of Flask-Security plugin using the 'pip list' command.

Note: Flask-Security is not maintained anymore. Please update to Flask-Security-Too plugin instead

Successful exploitation of the vulnerability may allow an attacker to redirect a user to a malicious website of attacker's choosing.

CVSS V3 rated as High - 6.1 severity.

CVSS V2 rated as Medium - 5.8 severity.

Solution

Flask-Security is not maintained anymore and there is no patch available. For more info please refer to Flask-Security Advisory

Vendor References

Flask-Security Advisory - github.com/mattupstate/flask-security/issues/872

CVEs related to QID 376262

CVE-2021-23385 |

Software Advisories

Advisory ID	Software	Component	Link

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