Improper Restriction of Excessive Authentication Attempts in Nextcloud Enterprise Server and Nextcloud Server - CVE-2023-25820

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Main Vulnerability Database Vulnerabilities #VU73916

Improper Restriction of Excessive Authentication Attempts in Nextcloud Enterprise Server and Nextcloud Server - CVE-2023-25820

Published: March 22, 2023


Vulnerability identifier: #VU73916
CSH Severity: Low
CVSS v4: 1 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-25820
CWE-ID: CWE-307
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to compromise the target system.

The vulnerability exists due to improper restriction of excessive authentication attempts on password confirmation modal. A local user can brute force the password on the confirmation endpoint.


Affected software

Nextcloud Enterprise Server
Nextcloud Server

How to mitigate CVE-2023-25820

Install updates from vendor's website.

Nextcloud Enterprise Server - addressed in versions 21.0.9.10, 22.2.10.10, 23.0.12.5, 24.0.10, 25.0.4
Nextcloud Server - addressed in versions 24.0.10, 25.0.4

External References

Related Security Bulletins