Authorization bypass through user-controlled key in Nextcloud Server - CVE-2021-32654
Published: June 4, 2021
Vulnerability identifier: #VU53819
CSH Severity: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2021-32654
CWE-ID:
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Nextcloud Server
Nextcloud Server
Software vendor:
Nextcloud
Nextcloud
Description
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to improper authorization. A remote attacker can receive write/read privileges on any Federated File Share.
Remediation
Install updates from vendor's website.