Multiple vulnerabilities in Nextcloud Server and Enterprise Server

Published: 2025-01-20

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2024-52519 CVE-2024-52520
CWE-ID	CWE-922 CWE-400
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Nextcloud Server Client/Desktop applications / Messaging software Nextcloud Enterprise Server Client/Desktop applications / Messaging software
Vendor	Nextcloud

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Insecure Storage of Sensitive Information

EUVDB-ID: #VU103058

Risk: Low

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

CVE-ID: CVE-2024-52519

CWE-ID: CWE-922 - Insecure Storage of Sensitive Information

Exploit availability: No

Description

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

The vulnerability exists due to the OAuth2 client secrets are stored in a recoverable way. 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 - 29.0.6

Nextcloud Enterprise Server: 27.0.0 - 29.0.6

CPE2.3

External links

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-fvpc-8hq6-jgq2
https://github.com/nextcloud/server/pull/47635
https://github.com/nextcloud/server/commit/09b8aea8f6783514bffe00df6abbf9fa542faac5

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.

2) Resource exhaustion

EUVDB-ID: #VU103060

Risk: Medium

CVSSv4.0: 1.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-52520

CWE-ID: CWE-400 - Resource exhaustion