Advisories ยป MGASA-2021-0421

Updated nextcloud-client packages fix security vulnerability

Publication date: 23 Sep 2021
Type: security
Affected Mageia releases : 8
CVE: CVE-2021-22895 , CVE-2021-32728


Nextcloud Desktop Client before 3.3.1 is vulnerable to improper certificate
validation due to lack of SSL certificate verification when using the
"Register with a Provider" flow. (CVE-2021-22895)

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