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CVE-2021-23393

MEDIUM

5.4

Description

This affects the package Flask-Unchained before 0.9.0. When using the the _validate_redirect_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. 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.

CVE Details

CVSS v3.1 Score5.4

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionREQUIRED

Published6/11/2021

Last Modified11/21/2024

Sourcenvd

Honeypot Sightings0

Affected Products

flask_unchained_project:flask_unchained

Weaknesses (CWE)

CWE-601

References

https://github.com/briancappello/flask-unchained/commit/71e36b28166f9ffbe0a991f51127f0984f7e6a40(report@snyk.io)

https://snyk.io/vuln/SNYK-PYTHON-FLASKUNCHAINED-1293189(report@snyk.io)

https://github.com/briancappello/flask-unchained/commit/71e36b28166f9ffbe0a991f51127f0984f7e6a40(af854a3a-2127-422b-91ae-364da2661108)

https://snyk.io/vuln/SNYK-PYTHON-FLASKUNCHAINED-1293189(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.