CVE-2021-23393 - OpenCVE

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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v3.0

Access Vector Network

Access Complexity Medium

Authentication None

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact None

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

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Vendors	Products
Flask Unchained Project	Flask Unchained

Configuration 1 [-]

cpe:2.3:a:flask_unchained_project:flask_unchained:*:*:*:*:*:*:*:*

No data.

References

Link	Providers
https://github.com/briancappello/flask-unchained/commit/71e36b28166f9ffbe0a991f51127f0984f7e6a40
https://snyk.io/vuln/SNYK-PYTHON-FLASKUNCHAINED-1293189

History

No history.

MITRE

Status: PUBLISHED

Assigner: snyk

Published: 2021-06-10T23:20:10.252434Z

Updated: 2024-09-16T17:18:13.774Z

Reserved: 2021-01-08T00:00:00

Link: CVE-2021-23393

Vulnrichment

No data.

NVD

Status : Analyzed

Published: 2021-06-11T00:15:09.273

Modified: 2021-06-22T16:53:53.523

Link: CVE-2021-23393

Redhat

No data.

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