Package: vsftpd Version: 3.0.3-12 Fedora have a number of patches available via https://src.fedoraproject.org/rpms/vsftpd/tree/master that enable modern encryption standards and make the defualt ssl implementation TLS V1.2.
Please consider including these or similar patches in your package. SSL V2, V3, and TLSV1.0 which are the only current config options provided by this package are all deprecated and should be considered insecure at this point. Many thanks! — Chris