CVE-2023-39962

Users can delete external storage mount points

State: Published
Severity: 7.7 High
Published: Aug 10, 2023
Updated: Oct 3, 2024
Reserved: Aug 7, 2023

Description

Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 19.0.0 and prior to versions 19.0.13.10, 20.0.14.15, 21.0.9.13, 22.2.10.14, 23.0.12.8, 24.0.12.5, 25.0.9, 26.0.4, and 27.0.1, a malicious user could delete any personal or global external storage, making them inaccessible for everyone else as well. Nextcloud server versions 25.0.9, 26.0.4, and 27.0.1 and Nextcloud Enterprise Server versions 19.0.13.10, 20.0.14.15, 21.0.9.13, 22.2.10.14, 23.0.12.9, 24.0.12.5, 25.0.9, 26.0.4, and 27.0.1 contain a patch for this issue. As a workaround, disable app files_external. This also makes the external storage inaccessible but retains the configurations until a patched version has been deployed.

Scores

CVSS	Score	Vector	Source
3.1	7.7 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H	GitHub_M

Weaknesses

CWE-284 Improper Access Control

Affected Products

Product	Versions
security-advisoriesnextcloud	>= 19.0.0, < 19.0.13.10Affected >= 20.0.0, < 20.0.14.15Affected >= 21.0.0, < 21.0.9.13Affected >= 22.0.0, < 22.2.10.14Affected >= 23.0.0, < 23.0.12.9Affected >= 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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