Vulnerability identifier: #VU55561

Vulnerability risk: Medium

CVSSv3.1: 5 [CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-35946

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
ownCloud Server
Web applications / Modules and components for CMS

Vendor: ownCloud

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.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

ownCloud Server: 10.0 - 10.7.0

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External links
http://owncloud.com/security-advisories/cve-2021-35946/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.