The Eclipse Mosquitto broker up to version 1.4.15 does not reject strings that are not valid UTF-8. A malicious client could cause other clients that do reject invalid UTF-8 strings to disconnect themselves from the broker by sending a topic string which is not valid UTF-8, and so cause a denial of service for the clients. Upstream Bug: https://bugs.eclipse.org/bugs/show_bug.cgi?id=532113
Created mosquitto tracking bugs for this issue: Affects: epel-7 [bug 1588901] Affects: fedora-all [bug 1588902]