CVE-2023-39962
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.
How to fix
- nextcloud nextcloud_server19.0.13.10, 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 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| nextcloud nextcloud_server | 19.0.0 ≤ v < 19.0.13.10, 20.0.0 ≤ v < 20.0.14.15, 21.0.0 ≤ v < 21.0.9.13, 22.0.0 ≤ v < 22.2.10.14, 23.0.0 ≤ v < 23.0.12.9, 24.0.0 ≤ v < 24.0.12.5, 25.0.0 ≤ v < 25.0.9, 26.0.0 ≤ v < 26.0.4, 27.0.0 | 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 |
Check your version
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Attack Surface Management
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