CVE-2021-29621

Advisory

Flask-AppBuilder 3.3.0 includes a fix for CVE-2021-29621: User enumeration in database authentication in Flask-AppBuilder <= 3.2.3 allows for a non authenticated users to enumerate existing accounts by timing the response time from the server when you are logging in.

Affected package

Affected versions

Fixed versions

Vulnerability changelog

Flask-AppBuilder is a development framework, built on top of Flask. User enumeration in database authentication in Flask-AppBuilder <= 3.2.3. Allows for a non authenticated user to enumerate existing accounts by timing the response time from the server when you are logging in. Upgrade to version 3.3.0 or higher to resolve. See CVE-2021-29621.


CONFIRM:https://github.com/dpgaspar/Flask-AppBuilder/security/advisories/GHSA-434h-p4gx-jm89: https://github.com/dpgaspar/Flask-AppBuilder/security/advisories/GHSA-434h-p4gx-jm89
MISC:https://github.com/dpgaspar/Flask-AppBuilder/commit/780bd0e8fbf2d36ada52edb769477e0a4edae580: https://github.com/dpgaspar/Flask-AppBuilder/commit/780bd0e8fbf2d36ada52edb769477e0a4edae580
MISC:https://pypi.org/project/Flask-AppBuilder/: https://pypi.org/project/Flask-AppBuilder/

Resources

• https://github.com/dpgaspar/Flask-AppBuilder/security/advisories/GHSA-434h-p4gx-jm89
• https://github.com/dpgaspar/Flask-AppBuilder/commit/780bd0e8fbf2d36ada52edb769477e0a4edae580
• https://pypi.org/project/Flask-AppBuilder/
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29621
• https://lists.apache.org/thread.html/r5b754118ba4e996adf03863705d34168bffec202da5c6bdc9bf3add5@%3Cannounce.apache.org%3E
• https://lists.apache.org/thread.html/r466759f377651f0a690475d5a52564d0e786e82c08d5a5730a4f8352@%3Cannounce.apache.org%3E
• https://lists.apache.org/thread.html/r91067f953906d93aaa1c69fe2b5472754019cc6bd4f1ba81349d62a0@%3Ccommits.airflow.apache.org%3E