4.3

CVE-2021-41241

Advanced permissions is not respected for subfolders in Nextcloud server

Groupfolders advanced permissions is not obeyed for subfolders

Nextcloud server is a self hosted system designed to provide cloud style services. 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. It is recommended that the Nextcloud Server is upgraded to 20.0.14, 21.0.6 or 22.2.1. Users unable to upgrade should disable the "groupfolders" application in the admin settings.
Mögliche Gegenmaßnahme
Server: Disable the "groupfolders" application in the admin settings.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Nextcloud ≫ Nextcloud Server Version < 20.0.14
Nextcloud ≫ Nextcloud Server Version >= 21.0.0 < 21.0.6
Nextcloud ≫ Nextcloud Server Version22.2.0
VulnDex Vulnerability Enrichment
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Weitere Schwachstelleninformationen
SystemNextcloud
≫
Produkt Server
Version >= 0.0.0, < 20.0.14
Version >= 21.0.0, < 21.0.6
Version >= 22.2.0, < 22.2.1
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.84% 0.533
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 4.3 2.8 1.4
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
nvd@nist.gov 4 8 2.9
AV:N/AC:L/Au:S/C:P/I:N/A:N
security-advisories@github.com 4.3 2.8 1.4
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CWE-862 Missing Authorization

The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

CWE-863 Incorrect Authorization

The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

https://security.gentoo.org/glsa/202208-17
Third Party Advisory
https://github.com/nextcloud/groupfolders/issues/1692
Patch
Third Party Advisory
Issue Tracking
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-m4wp-r357-4q94
Third Party Advisory
Issue Tracking
https://github.com/nextcloud/server/pull/29362
Patch
Third Party Advisory
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-m4wp-r357-4q94
Third Party Advisory