USN-3659-1: Spice vulnerability

23 May 2018

spice, spice-protocol vulnerability

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

  • Ubuntu 18.04 LTS
  • Ubuntu 17.10
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS


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

Software Description

  • spice - SPICE protocol client and server library
  • spice-protocol - SPICE protocol headers


Frediano Ziglio discovered that Spice incorrectly handled certain client messages. An attacker could possibly use this to cause Spice to crash, resulting in a denial of service, or possibly execute arbitrary code.

Update instructions

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

Ubuntu 18.04 LTS
libspice-server1 - 0.14.0-1ubuntu2.1
Ubuntu 17.10
libspice-server1 - 0.12.8-2.2ubuntu0.1
Ubuntu 16.04 LTS
libspice-protocol-dev - 0.12.10-1ubuntu0.1
Ubuntu 14.04 LTS
libspice-server1 - 0.12.4-0nocelt2ubuntu1.6

To update your system, please follow these instructions:

After a standard system update you need to restart qemu guests to make all the necessary changes.