Thursday's security updates

Fedora has updated bind (F21; F20: denial of service), lftp (F21: automatically accepting ssh keys), and rubygem-actionpack (F20: two information leaks).

openSUSE has updated vsftpd (13.2, 13.1: access restriction bypass).

Ubuntu has updated icu (14.10, 14.04, 12.04: multiple vulnerabilities, some from 2013).