Vulnerability identifier: #VU85602
Vulnerability risk: Medium
CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-177
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Guests
Web applications /
Modules and components for CMS
Vendor: Nextcloud
Description
The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper handling of request URLs in Guests app. A remote user can load the pages of apps they are not allowed to access.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Guests: 2.4.0 - 3.0.0
External links
http://github.com/nextcloud/security-advisories/security/advisories/GHSA-v3qw-7vgv-2fxj
http://github.com/nextcloud/guests/pull/1082
http://hackerone.com/reports/2251074
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.