MGASA-2021-0421 - Updated nextcloud-client packages fix security vulnerability Publication date: 23 Sep 2021 URL: https://advisories.mageia.org/MGASA-2021-0421.html 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 References: - https://bugs.mageia.org/show_bug.cgi?id=29043 - https://security-tracker.debian.org/tracker/source-package/nextcloud-desktop - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-22895 - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-32728 SRPMS: - 8/core/nextcloud-client-3.3.3-1.mga8