Ubuntu 20.04 LTS Advisory: USN-4572-1 Moderate Spice DoS Threat

ubuntu

October 6, 2020

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

Summary

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

Details:

Frediano Ziglio discovered that Spice incorrectly handled QUIC image

decoding. A remote attacker could use this to cause Spice to crash,

resulting in a denial of service, or possibly execute arbitrary code.

Topics Covered

security advisory denial of service remote code execution Ubuntu spice

Update Instructions

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

Ubuntu 20.04 LTS:
  libspice-server1                0.14.2-4ubuntu3.1

Ubuntu 18.04 LTS:
  libspice-server1                0.14.0-1ubuntu2.5

Ubuntu 16.04 LTS:
  libspice-server1                0.12.6-4ubuntu0.5

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