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USN-4137-1: Mosquitto vulnerability

23 September 2019

Mosquitto could be made to crash or run programs if it received specially crafted network traffic.



  • mosquitto - MQTT version 3.1/3.1.1 compatible message broker


It was discovered that Mosquitto incorrectly handled certain specially crafted
input and network packets. A remote attacker could use this to cause a denial
of service.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 19.04

In general, a standard system update will make all the necessary changes.