CVE-2021-23401

描述

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.

如何修補 CVE-2021-23401

目前尚未發布修補版本。可考慮移除受影響套件,或參考下方連結中的上游建議。

• —未列出修補版本
• —未列出修補版本

CVE-2021-23401 正在被利用嗎?

低 — EPSS 為 0.3%,目前沒有觀察到大規模利用活動。

受影響套件(2)

• from 0, <= 1.0.2.2
• from 0

CVSS 分數

參考連結(6)

• ADVISORYgithub.com/advisories/GHSA-4298-89hc-6rfv
• ADVISORYnvd.nist.gov/vuln/detail/CVE-2021-23401
• PATCHgithub.com/lingthio/Flask-User
• WEBgithub.com/lingthio/Flask-User/blob/master/flask_user/user_manager__utils.py