CVE-2023-39952
Last modified
CVE-2023-39952 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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. EPSS estimates a 0.80% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Nextcloud | Nextcloud Server | >= 22.0.0, < 22.2.10.13 |
| Nextcloud | Nextcloud Server | >= 23.0.0, < 23.0.12.8 |
| Nextcloud | Nextcloud Server | >= 24.0.0, < 24.0.12.4 |
| Nextcloud | Nextcloud Server | >= 25.0.0, < 25.0.8 |
| Nextcloud | Nextcloud Server | >= 26.0.0, < 26.0.3 |
| Nextcloud | Nextcloud Server | 27.0.0 |
References
- https://github.com/nextcloud/groupfolders/issues/1906Issue Tracking, Third Party Advisory
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-cq8w-v4fh-4rjqPatch, Vendor Advisory
- https://hackerone.com/reports/1808079Permissions Required
- https://github.com/nextcloud/groupfolders/issues/1906Issue Tracking, Third Party Advisory
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-cq8w-v4fh-4rjqPatch, Vendor Advisory
- https://hackerone.com/reports/1808079Permissions Required
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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