=========================================================================Ubuntu Security Notice USN-4050-1
July 08, 2019

zeromq3 vulnerability
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 19.04
- Ubuntu 18.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

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.

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.

References:
  https://ubuntu.com/security/notices/USN-4050-1
  CVE-2019-13132

Package Information:
  https://launchpad.net/ubuntu/+source/zeromq3/4.3.1-3ubuntu2.1
  https://launchpad.net/ubuntu/+source/zeromq3/4.2.5-2ubuntu0.2
  https://launchpad.net/ubuntu/+source/zeromq3/4.2.5-1ubuntu0.2
  https://launchpad.net/ubuntu/+source/zeromq3/4.1.4-7ubuntu0.1