Bug 1915794 (CVE-2021-21241) - CVE-2021-21241 python-flask-security: unprotected GET requests could lead to malicious party obtaining the authentication token
Summary: CVE-2021-21241 python-flask-security: unprotected GET requests could lead to ...
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2021-21241
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1915795
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-01-13 12:54 UTC by Marian Rehak
Modified: 2021-01-13 18:27 UTC (History)
2 users (show)

Fixed In Version:
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Last Closed: 2021-01-13 18:27:51 UTC
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Description Marian Rehak 2021-01-13 12:54:36 UTC 
In Flask-Security-Too from version 3.3.0 and before version 3.4.5, 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.

Reference:

https://github.com/Flask-Middleware/flask-security/pull/422
Comment 1 Marian Rehak 2021-01-13 12:54:55 UTC 
Created python-flask-security tracking bugs for this issue:

Affects: fedora-all [bug 1915795]
Comment 2 Product Security DevOps Team 2021-01-13 18:27:51 UTC 
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.
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