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.

CVSS v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/mattupstate/flask-security	Product Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/08/msg00034.html
https://security.snyk.io/vuln/SNYK-PYTHON-FLASKSECURITY-1293234	Exploit Third Party Advisory
https://snyk.io/blog/url-confusion-vulnerabilities/	Technical Description Third Party Advisory
https://github.com/mattupstate/flask-security	Product Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/08/msg00034.html
https://security.snyk.io/vuln/SNYK-PYTHON-FLASKSECURITY-1293234	Exploit Third Party Advisory
https://snyk.io/blog/url-confusion-vulnerabilities/	Technical Description Third Party Advisory

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2022-08-02 14:15

Updated : 2024-11-21 05:51

NVD link : CVE-2021-23385

Mitre link : CVE-2021-23385

CVE.ORG link : CVE-2021-23385

JSON object : View

Products Affected

flask-security_project

flask-security

CWE

CWE-601

URL Redirection to Untrusted Site ('Open Redirect')

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