Vulnerability identifier: #VU74598
Vulnerability risk: Low
CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-284
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Nextcloud Server
Client/Desktop applications /
Messaging software
Nextcloud Enterprise Server
Client/Desktop applications /
Messaging software
Vendor: Nextcloud
Description
The vulnerability allows a remote user to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions. A remote user without download permissions can bypass implemented security restrictions and download older versions of files from the server.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Nextcloud Server: 24.0.4 - 25.0.3
Nextcloud Enterprise Server: 24.0.4 - 25.0.3
External links
http://github.com/nextcloud/security-advisories/security/advisories/GHSA-w47p-f66h-h2vj
http://github.com/nextcloud/server/pull/36113
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.