CVE-2021-41241
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| nextcloud | security-advisories | < 20.0.14 | affected |
| nextcloud | security-advisories | >= 21.0.0, < 21.0.6 | affected |
| nextcloud | security-advisories | >= 22.2.0, < 22.2.1 | affected |
Weaknesses
- CWE-863: CWE-863: Incorrect Authorization
ADP Enrichment
CVE Program Container
Additional References
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-m4wp-r357-4q94
- https://github.com/nextcloud/groupfolders/issues/1692
- https://github.com/nextcloud/server/pull/29362
- https://security.gentoo.org/glsa/202208-17
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-m4wp-r357-4q94
- https://github.com/nextcloud/groupfolders/issues/1692
- https://github.com/nextcloud/server/pull/29362
- https://security.gentoo.org/glsa/202208-17
Feedback
Was this page helpful?
Glad to hear it! Please tell us how we can improve.
Sorry to hear that. Please tell us how we can improve.