CVE-2023-39952

Advanced permissions not respected when copying entire group folders

State: Published
Severity: 6.5 Medium
Published: Aug 10, 2023
Updated: Oct 8, 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, 24.0.12.4, 25.0.8, 26.0.3, and 27.0.1, a user can access files inside a subfolder of a groupfolder accessible to them, even if advanced permissions would block access to the subfolder. Nextcloud Server versions 25.0.8, 26.0.3, and 27.0.1 and Nextcloud Enterprise Server versions 22.2.10.13, 23.0.12.8, 24.0.12.4, 25.0.8, 26.0.3, and 27.0.1 contain a patch for this issue. No known workarounds are available.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N	GitHub_M

Weaknesses

CWE-284 Improper Access Control

Affected Products

Product	Versions
security-advisoriesnextcloud	>= 22.0.0, < 22.2.10.13Affected >= 23.0.0, < 23.0.12.8Affected >= 24.0.0, < 24.0.12.4Affected >= 25.0.0, < 25.0.8Affected >= 26.0.0, < 26.0.3Affected >= 27.0.0, < 27.0.1Affected

References

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