Violation of Secure Design Principles in Nextcloud Server

1) Violation of Secure Design Principles

EUVDB-ID: #VU85591

Risk: Low

CVSSv4.0: 0.1 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-22403

CWE-ID: CWE-657 - Violation of Secure Design Principles

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to OAuth2 authorization codes are valid indefinetly. A remote user can gain access to an authorization code and could authenticate at any time using the code.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Nextcloud Server: - - 27.1.5

CPE2.3

• cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*
• cpe:2.3:a:nextcloud:nextcloud_server:0.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:nextcloud:nextcloud_server:1.0.0:*:*:*:*:*:*:*

External links

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-wppc-f5g8-vx36
https://github.com/nextcloud/server/pull/40766
https://hackerone.com/reports/1784162

Q & A

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.