Bug 2063895 (CVE-2021-41241) - CVE-2021-41241 nextcloud: groupfolders advanced permissions is not obeyed for subfolders
Summary: CVE-2021-41241 nextcloud: groupfolders advanced permissions is not obeyed for...
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2021-41241
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2063896
Blocks:
TreeView+ depends on / blocked
 
Reported: 2022-03-14 15:19 UTC by Marian Rehak
Modified: 2022-03-14 22:32 UTC (History)
2 users (show)

Fixed In Version: nextcloud 20.0.14, nextcloud 21.0.6, nextcloud 22.2.1
Clone Of:
Environment:
Last Closed: 2022-03-14 22:32:03 UTC
Embargoed:


Attachments (Terms of Use)

Description Marian Rehak 2022-03-14 15:19:37 UTC
The groupfolders application for Nextcloud allows sharing a folder with a group of people. In addition, it allows setting "advanced permissions" on subfolders, for example, a user could be granted access to the groupfolder but not specific subfolders. Due to a lacking permission check in affected versions, a user could still access these subfolders by copying the groupfolder to another location. Users unable to upgrade should disable the "groupfolders" application in the admin settings.

Reference:

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-m4wp-r357-4q94
https://github.com/nextcloud/server/pull/29362
https://github.com/nextcloud/groupfolders/issues/1692

Comment 1 Marian Rehak 2022-03-14 15:19:52 UTC
Created nextcloud tracking bugs for this issue:

Affects: fedora-all [bug 2063896]

Comment 2 Product Security DevOps Team 2022-03-14 22:32:01 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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