CVE-2016-9461
Publication date 28 March 2017
Last updated 25 August 2025
Ubuntu priority
Description
Nextcloud Server before 9.0.52 & ownCloud Server before 9.0.4 are not properly verifying edit check permissions on WebDAV copy actions. The WebDAV endpoint was not properly checking the permission on a WebDAV COPY action. This allowed an authenticated attacker with access to a read-only share to put new files in there. It was not possible to modify existing files.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| nextcloud | ||
| 18.04 LTS bionic | Not in release | |
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty | Not in release | |
| owncloud | ||
| 18.04 LTS bionic | Not in release | |
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty | Not in release | |
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
4.3 · Medium
|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | Low |
| Availability impact | None |
| Vector | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
References
Other references
- https://github.com/nextcloud/server/commit/3491400261c1454a9a30d3ec96969573330120cc
- https://github.com/owncloud/core/commit/0622e635d97cb17c5e1363e370bb8268cc3d2547
- https://github.com/owncloud/core/commit/121a3304a0c37ccda0e1b63ddc528cba9121a36e
- https://github.com/owncloud/core/commit/acbbadb71ceee7f01da347f7dcd519beda78cc47
- https://github.com/owncloud/core/commit/c0a4b7b3f38ad2eaf506484b3b92ec678cb021c9
- https://hackerone.com/reports/145950
- https://nextcloud.com/security/advisory/?id=nc-sa-2016-004
- https://owncloud.org/security/advisory/?id=oc-sa-2016-014
- https://www.cve.org/CVERecord?id=CVE-2016-9461