Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Nextcloud | Nextcloud Server | >= 19.0.0, < 19.0.13.10 |
Related Weaknesses (CWE)
References
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-xwxx-2Vendor Advisory
- https://github.com/nextcloud/server/pull/39323Patch
- https://hackerone.com/reports/2047168Third Party Advisory
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-xwxx-2Vendor Advisory
- https://github.com/nextcloud/server/pull/39323Patch
- https://hackerone.com/reports/2047168Third Party Advisory
FAQ
What is CVE-2023-39962?
CVE-2023-39962 is a vulnerability with a CVSS score of 7.7 (HIGH). 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....
How severe is CVE-2023-39962?
CVE-2023-39962 has been rated HIGH with a CVSS base score of 7.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-39962?
Check the references section above for vendor advisories and patch information. Affected products include: Nextcloud Nextcloud Server.