CVE-2022-21659: Observable Response Discrepancy in Flask-AppBuilder
First published: Mon Jan 31 2022(Updated: )
### Impact User enumeration in database authentication in Flask-AppBuilder < 3.4.4. Allows for a non authenticated user to enumerate existing accounts by timing the response time from the server when you are logging in. ### Patches Upgrade to 3.4.4 ### Workarounds ### References ### For more information If you have any questions or comments about this advisory: * Open an issue in [example link to repo](http://example.com) * Email us at [example email address](mailto:example@example.com)
Credit: security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Flask-appbuilder Project Flask-appbuilder | <3.4.2 | |
| pip/Flask-AppBuilder | <3.4.4 | 3.4.4 |
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Reference Links
- https://github.com/dpgaspar/Flask-AppBuilder/pull/1775
- https://github.com/dpgaspar/Flask-AppBuilder/security/advisories/GHSA-wfjw-w6pv-8p7f
- https://nvd.nist.gov/vuln/detail/CVE-2022-21659
- https://github.com/dpgaspar/Flask-AppBuilder/commit/e2b744c258ff62ece9d5ac7172c3b4644ff4c2fe
- https://github.com/dpgaspar/Flask-AppBuilder/commits/v3.4.4
- https://github.com/pypa/advisory-database/tree/main/vulns/flask-appbuilder/PYSEC-2022-24.yaml
- https://github.com/advisories/GHSA-wfjw-w6pv-8p7f (Advisory)
Frequently Asked Questions
What is CVE-2022-21659?
CVE-2022-21659 is a user enumeration vulnerability in Flask-AppBuilder, allowing unauthenticated users to enumerate existing accounts.
What is the severity of CVE-2022-21659?
CVE-2022-21659 has a severity rating of 5.3 (medium).
How does CVE-2022-21659 work?
CVE-2022-21659 allows attackers to determine the existence of user accounts by timing the response time from the server.
Which versions of Flask-AppBuilder are affected by CVE-2022-21659?
Flask-AppBuilder versions up to 3.4.2 are affected by CVE-2022-21659.
How can I mitigate CVE-2022-21659?
To mitigate CVE-2022-21659, it is recommended to update Flask-AppBuilder to a version beyond 3.4.2.
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