Improper access control in Nextcloud Enterprise Server and Nextcloud Server - CVE-2023-48239
Published: November 21, 2023
Vulnerability identifier: #VU83360
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2023-48239
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Nextcloud
Affected software:
Nextcloud Enterprise Server
Nextcloud Server
Nextcloud Enterprise Server
Nextcloud Server
Detailed vulnerability description
The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions. A remote user can update any personal or global external storage and make them inaccessible for everyone else as well.
How to mitigate CVE-2023-48239
Install updates from vendor's website.