Security Advisory

CVE-2021-32728

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2021-08-18 16:00:13
Last updated 2024-08-03 23:33:54
Assigner GitHub_M
State PUBLISHED

Description

The Nextcloud Desktop Client is a tool to synchronize files from Nextcloud Server with a computer. Clients using the Nextcloud end-to-end encryption feature download the public and private key via an API endpoint. In versions prior to 3.3.0, the Nextcloud Desktop client fails to check if a private key belongs to previously downloaded public certificate. If the Nextcloud instance serves a malicious public key, the data would be encrypted for this key and thus could be accessible to a malicious actor. This issue is fixed in Nextcloud Desktop Client version 3.3.0. There are no known workarounds aside from upgrading.