CVE-2023-39958

Missing brute force protection on password reset token OAuth2 API controller

State: Published
Severity: 5.8 Medium
Published: Aug 10, 2023
Updated: Oct 10, 2024
Reserved: Aug 7, 2023

Description

Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 22.0.0 and prior to versions 22.2.10.13, 23.0.12.8, 24.0.12.5, 25.0.9, 26.0.4, and 27.0.1, missing protection allows an attacker to brute force the client secrets of configured OAuth2 clients. Nextcloud Server versions 25.0.9, 26.0.4, and 27.0.1 and Nextcloud Enterprise Server versions 22.2.10.13, 23.0.12.8, 24.0.12.5, 25.0.9, 26.0.4, and 27.0.1 contain a patch for this issue. No known workarounds are available.

Scores

CVSS	Score	Vector	Source
3.1	5.8 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N	GitHub_M

Weaknesses

CWE-307 Improper Restriction of Excessive Authentication Attempts

Affected Products

Product	Versions
security-advisoriesnextcloud	>= 22.0.0, < 22.2.10.13Affected >= 23.0.0, < 23.0.12.8Affected >= 24.0.0, < 24.0.12.5Affected >= 25.0.0, < 25.0.9Affected >= 26.0.0, < 26.0.4Affected >= 27.0.0, < 27.0.1Affected

References

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