GitHub Advisoryadvisory · PyPI
GHSA-hh7m-rx4f-4vpv CSRF can expose users authentication token
HIGH
Official page ↗
- Aliases
- CVE-2021-21241
- Ecosystem
- PyPI
- Packages
- Flask-Security-Too
- Severity
- High
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
- Weaknesses
- CWE-352
- Reviewed
- 2021-01-11
Affected packages
• PyPI Flask-Security-Too: >= 3.3.0, < 3.4.5 → fixed in 3.4.5
Description
Issue
The /login and /change endpoints can return the authenticated user's authentication token in response to a GET request. Since GET requests aren't protected with a CSRF token, this could lead to a malicious 3rd party site acquiring the authentication token.
Patches
Version 3.4.5 and soon to be released 4.0.0 are patched.
Workarounds
If you aren't using authentication tokens - you can set the SECURITY_TOKEN_MAX_AGE to "0" (seconds) which should make the token unusable.
References
None
Related
Alias · CVE (1)
- CVE-2021-21241 The Python "Flask-Security-Too" package is used for adding security features to your Flask application. vulnerability
Weakness · CWE (1)
- CWE-352 Cross-Site Request Forgery weakness
References
- https://nvd.nist.gov/vuln/detail/CVE-2021-21241 advisory
- https://github.com/pypa/advisory-database/tree/main/vulns/flask-security-too/PYSEC-2021-91.yaml web
- https://pypi.org/project/Flask-Security-Too web
- https://web.archive.org/web/20210118165844/https://github.com/Flask-Middleware/flask-security/releases/tag/3.4.5 web
- https://web.archive.org/web/20210118165958/https://github.com/Flask-Middleware/flask-security/commit/6d50ee9169acf813257c37b75babe9c28e83542a web
- https://web.archive.org/web/20210118170445/https://github.com/Flask-Middleware/flask-security/commit/61d313150b5f620d0b800896c4f2199005e84b1f web
- https://web.archive.org/web/20210118170502/https://github.com/Flask-Middleware/flask-security/security/advisories/GHSA-hh7m-rx4f-4vpv web
- https://web.archive.org/web/20211207005640/https://github.com/Flask-Middleware/flask-security/pull/422 web