Bug 1915794 (CVE-2021-21241)

Summary:	CVE-2021-21241 python-flask-security: unprotected GET requests could lead to malicious party obtaining the authentication token
Product:	[Other] Security Response	Reporter:	Marian Rehak <mrehak>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	devrim, itamar
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-01-13 18:27:51 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1915795
Bug Blocks:

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.