Permissions, Privileges, and Access Controls in Nextcloud Server - CVE-2021-32725
Published: July 12, 2021
Vulnerability identifier: #VU54671
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-32725
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Nextcloud
Affected software:
Nextcloud Server
Nextcloud Server
Detailed vulnerability description
The vulnerability allows a remote attacker to escalate privileges on the system.
The vulnerability exists due to default share permissions are not respected for federated reshares of files and folders, which leads to security restrictions bypass and privilege escalation.
How to mitigate CVE-2021-32725
Install updates from vendor's website.