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.

CVSS v3 6.1 MEDIUM
CVSS v2.0 5.8 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

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

5.8^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:P/I:P/A:N

Exploitability : 8.6 / Impact : 4.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
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
https://snyk.io/vuln/SNYK-PYTHON-FLASKUSER-1293188	Third Party Advisory

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2021-07-05 11:15

Updated : 2024-02-28 18:28

NVD link : CVE-2021-23401

Mitre link : CVE-2021-23401

CVE.ORG link : CVE-2021-23401

JSON object : View

Products Affected

flask-user_project

flask-user

CWE

CWE-601

URL Redirection to Untrusted Site ('Open Redirect')

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