CVE Vulnerability

CVE-2021-23385

This affects all versions of package Flask-Security. 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.

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://security.snyk.io/vuln/SNYK-PYTHON-FLASKSECURITY-1293234 Exploit Third Party Advisory
https://github.com/mattupstate/flask-security Product Third Party Advisory
https://snyk.io/blog/url-confusion-vulnerabilities/ Technical Description Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:flask-security_project:flask-security:*:*:*:*:*:*:*:*
Information

Published : 2022-08-02 02:15

Updated : 2022-08-09 12:47

NVD link : CVE-2021-23385

Mitre link : CVE-2021-23385

Products Affected
No products.
CWE
CWE-601

URL Redirection to Untrusted Site ('Open Redirect')