Red Hat Security Advisory 2017-1285-01 - collectd is a small C-language daemon, which reads various system metrics periodically and updates RRD files. Because the daemon does not start up each time it updates files, it has a low system footprint. The following packages have been upgraded to a newer upstream version: collectd. Security Fix: collectd contains an infinite loop due to how the parse_packet() and parse_part_sign_sha256() functions interact. If an instance of collectd is configured with "SecurityLevel None" and with empty "AuthFile" options an attacker can send crafted UDP packets that trigger the infinite loop, causing a denial of service.