Nextcloud server denial of service vulnerability (CNVD-2022-20690)

Nextcloud is an open source, self-hosted file synchronization and sharing communication application platform from Nextcloud Germany. nextcloud server has a denial of service vulnerability that stems from a networked system or product that does not properly validate data boundaries when performing operations on image memory, which can be exploited by an attacker to cause a denial of service by uploading specially crafted files.