Permissions, Privileges, and Access Controls in ownCloud Server - CVE-2021-35946

 

Permissions, Privileges, and Access Controls in ownCloud Server - CVE-2021-35946

Published: August 4, 2021


Vulnerability identifier: #VU55561
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-35946
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: ownCloud
Affected software:
ownCloud Server

Detailed vulnerability description

The vulnerability allows a remote authenticated attacker to escalate privileges on the system.

The vulnerability exists due to the federated share recipient can increase permissions, which leads to security restrictions bypass and privilege escalation.


How to mitigate CVE-2021-35946

Install updates from vendor's website.

Sources