Information disclosure in Nextcloud Server and Enterprise Server

1) Information disclosure

EUVDB-ID: #VU103063

Risk: Low

CVSSv4.0: 0.6 [CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-52517

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to global credentials of external storages are sent back to the frontend. An administrator with physical access can gain unauthorized access to sensitive information on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Nextcloud Server: 28.0.0 - 30.0.0

Nextcloud Enterprise Server: 25.0.0 - 30.0.0

CPE2.3

• cpe:2.3:a:nextcloud:nextcloud_server:28.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:nextcloud:nextcloud_server:28.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:nextcloud:nextcloud_server:28.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:nextcloud:nextcloud_enterprise_server:25.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:nextcloud:nextcloud_enterprise_server:25.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:nextcloud:nextcloud_enterprise_server:25.0.2:*:*:*:*:*:*:*

External links

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-x9q3-c7f8-3rcg
https://github.com/nextcloud/server/pull/48359
https://github.com/nextcloud/server/commit/c45ed55f959ff54f3ea23dd2ae1a5868a075c9fe
https://hackerone.com/reports/2554079

Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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