#VU56355 Authorization bypass through user-controlled key in Deck - CVE-2021-37631
Published: September 7, 2021
Vulnerability identifier: #VU56355
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-37631
CWE-ID:
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Deck
Deck
Software vendor:
Nextcloud
Nextcloud
Description
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to the affected application does not properly check membership of users in a Circle. A remote authenticated attacker can gain access to boards that have been shared with a Circle, even if the user was not a member of the circle.
Remediation
Install updates from vendor's website.