Information disclosure in Nextcloud Enterprise Server



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-25159
CWE-ID CWE-284
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Nextcloud Enterprise Server
Client/Desktop applications / Messaging software

Vendor Nextcloud

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Improper access control

EUVDB-ID: #VU72489

Risk: Low

CVSSv4.0: 1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-25159

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a local user to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to previews are accessible without a watermark. A local administrator can bypass implemented security restrictions and gain unauthorized access to sensitive information on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Nextcloud Enterprise Server: 24.0.4 - 25.0.0

CPE2.3 External links

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-92g2-h5jv-jjmg


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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



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