Authentication bypass using an alternate path or channel in Nextcloud Global Site Selector

1) Authentication bypass using an alternate path or channel

EUVDB-ID: #VU85605

Risk: High

CVSSv3.1: 8.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-22212

CWE-ID: CWE-288 - Authentication Bypass Using an Alternate Path or Channel

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to the authentication bypass in the password verification method. A remote attacker can authenticate as another user.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Global Site Selector: 1.1.0 - 2.4.4

External links

http://github.com/nextcloud/security-advisories/security/advisories/GHSA-vj5q-f63m-wp77
http://github.com/nextcloud/globalsiteselector/commit/ab5da57190d5bbc79079ce4109b6bcccccd893ee
http://hackerone.com/reports/2248689

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.