CVE-2021-32805

Advisory

Flask-appbuilder version 3.2.2 includes a fix for CVE-2021-32805: In affected versions, if using flask-appbuilder OAuth, an attacker can share a carefully crafted URL with a trusted domain for an application built with flask-appbuilder and this URL can redirect a user to a malicious site. This is an open redirect vulnerability. If upgrading is infeasible, as a workaround, users may filter HTTP traffic containing "?next={next-site}" where the "next-site" domain is different from the application you are protecting.
https://github.com/dpgaspar/Flask-AppBuilder/security/advisories/GHSA-624f-cqvr-3qw4
https://github.com/dpgaspar/Flask-AppBuilder/commit/6af28521589599b1dbafd6313256229ee9a4fa74

Affected package

Affected versions

Fixed versions

Vulnerability changelog

Flask-AppBuilder is an application development framework, built on top of Flask. In affected versions if using Flask-AppBuilder OAuth, an attacker can share a carefully crafted URL with a trusted domain for an application built with Flask-AppBuilder, this URL can redirect a user to a malicious site. This is an open redirect vulnerability. To resolve this issue upgrade to Flask-AppBuilder 3.2.2 or above. If upgrading is infeasible users may filter HTTP traffic containing `?next={next-site}` where the `next-site` domain is different from the application you are protecting as a workaround. See CVE-2021-32805.


CONFIRM:https://github.com/dpgaspar/Flask-AppBuilder/security/advisories/GHSA-624f-cqvr-3qw4: https://github.com/dpgaspar/Flask-AppBuilder/security/advisories/GHSA-624f-cqvr-3qw4
MISC:https://github.com/dpgaspar/Flask-AppBuilder/commit/6af28521589599b1dbafd6313256229ee9a4fa74: https://github.com/dpgaspar/Flask-AppBuilder/commit/6af28521589599b1dbafd6313256229ee9a4fa74

Resources

• https://github.com/dpgaspar/Flask-AppBuilder/security/advisories/GHSA-624f-cqvr-3qw4
• https://github.com/dpgaspar/Flask-AppBuilder/commit/6af28521589599b1dbafd6313256229ee9a4fa74
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-32805