Open Redirect Affecting flask-security package, versions [0,]


0.0
medium

Snyk CVSS

    Attack Complexity Low
    User Interaction Required

    Threat Intelligence

    Exploit Maturity Proof of concept
    EPSS 0.09% (36th percentile)
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NVD
6.1 medium
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SUSE
5.4 medium

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  • Snyk ID SNYK-PYTHON-FLASKSECURITY-1293234
  • published 18 May 2021
  • disclosed 18 May 2021
  • credit Noam Moshe of Claroty

How to fix?

There is no fixed version for Flask-Security.

Overview

Flask-Security is a Simple security for Flask apps.

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`.

Note: Flask-Security is not maintained anymore.