Ubuntu 18.04 LTS: USN-4050-1 Critical: ZeroMQ Network Issue

ubuntu

July 8, 2019

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

Summary

ZeroMQ could be made to crash or run programs if it received specially crafted

network traffic.

Software Description:

- zeromq3: lightweight messaging kernel

Details:

It was discovered that ZeroMQ incorrectly handled certain application metadata.

A remote attacker could use this issue to cause ZeroMQ to crash, or possibly

execute arbitrary code.

Topics Covered

security advisory arbitrary code execution Ubuntu network traffic crash zeromq

Update Instructions

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

Ubuntu 19.04:
  libzmq5                         4.3.1-3ubuntu2.1

Ubuntu 18.10:
  libzmq5                         4.2.5-2ubuntu0.2

Ubuntu 18.04 LTS:
  libzmq5                         4.2.5-1ubuntu0.2

Ubuntu 16.04 LTS:
  libzmq5                         4.1.4-7ubuntu0.1

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