Improper privilege management in ownCloud Server - #VU19532
Published: July 29, 2019 / Updated: July 29, 2019
Vulnerability identifier: #VU19532
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: N/A
CWE-ID: CWE-269
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: ownCloud
Affected software:
ownCloud Server
ownCloud Server
Detailed vulnerability description
The vulnerability allows a remote attacker to gain elevated privileges.
The vulnerability exists due to the possibility to extend internal-share permissions using the API. A remote attacker can extend the permission of a received subfolder share using the ocs api and gain elevated privileges. Additional risk exists because the privileged extension is also possible on public-shares.
Remediation
Install updates from vendor's website.