CVE-2021-41241CWE-863

Advanced permissions is not respected for subfolders in Nextcloud server

Medium · published March 8, 2022

CVSS v3.1
4.3
EPSS
1%
Percentile
57.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00850 · 57.7th percentile
Weakness
CWE-863 · Incorrect Authorization
Published
2022-03-08T18:25Z
EPSS history
Timeline
  • 08 MAR 18:25Z
    Advanced permissions is not respected for subfolders in Nextcloud server
    cvelistv5