Possibility to extend internal-share permissions using the API
Platform: ownCloud Server
Risk level: High
CVSS v3 Base Score: 8 (Improper Privilege Management (CWE-269)
An Attacker can extend the permission of a received subfolder share using the ocs api. Additional risk exists because the previlege extension is also possible on public-shares.
- ownCloud Server < 10.2.1 (CVE-2019-????)
Added better checks which prevent extending the permission to OCS-API.