SB2023052911 - Improper Restriction of Excessive Authentication Attempts in Nexrcloud Server and Enterprise Server

Description

This security bulletin contains information about 1 vulnerability.

1) Improper Restriction of Excessive Authentication Attempts (CVE-ID: CVE-2023-32319)

CWE-ID: CWE-307 - Improper Restriction of Excessive Authentication Attempts

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

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

The vulnerability exists due to missing brute force protection on the WebDAV endpoints. A remote user can brute-force user credentials when the provided user name is not an email address.

Remediation

Install update from vendor's website.

References

• https://github.com/nextcloud/security-advisories/security/advisories/GHSA-mr7q-xf62-fw54
• https://github.com/nextcloud/server/pull/37227