CVE Vulnerability

CVE-2021-23401

This affects all versions of package Flask-User. When using the make_safe_url function, 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 or \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.

5.8 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 4.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact NONE

Scope

6.1 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References
Link Resource
https://snyk.io/vuln/SNYK-PYTHON-FLASKUSER-1293188 Third Party Advisory
https://github.com/lingthio/Flask-User Product Third Party Advisory
https://github.com/lingthio/Flask-User/blob/master/flask_user/user_manager__utils.py Exploit Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:flask-user_project:flask-user:*:*:*:*:*:*:*:*
Information

Published : 2021-07-05 11:15

Updated : 2021-07-08 06:08

NVD link : CVE-2021-23401

Mitre link : CVE-2021-23401

Products Affected
No products.
CWE
CWE-601

URL Redirection to Untrusted Site ('Open Redirect')