Use of Incorrectly-Resolved Name or Reference in Nextcloud Server and Enterprise Server

1) Use of Incorrectly-Resolved Name or Reference

EUVDB-ID: #VU74351

Risk: Medium

CVSSv4.0: 0.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-28643

CWE-ID: CWE-706 - Use of Incorrectly-Resolved Name or Reference

Exploit availability: No

Description

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

The vulnerability exists due to use of incorrectly-resolved name or reference. A remote user can cause share collision for recipients when caching is enabled.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Nextcloud Enterprise Server: 24.0.0 - 25.0.2

Nextcloud Server: 24.0.0 - 25.0.2

CPE2.3

• cpe:2.3:a:nextcloud:nextcloud_enterprise_server:24.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:nextcloud:nextcloud_enterprise_server:24.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:nextcloud:nextcloud_enterprise_server:24.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:nextcloud:nextcloud_server:24.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:nextcloud:nextcloud_server:24.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:nextcloud:nextcloud_server:24.0.2:*:*:*:*:*:*:*

External links

https://github.com/nextcloud/server/issues/34015
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-hhq4-4pr8-wm27
https://github.com/nextcloud/server/pull/36047

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.