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USN-4572-1: Spice vulnerability

6 October 2020

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



  • spice - SPICE protocol client and server library


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.

Update instructions

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

Ubuntu 20.04
Ubuntu 18.04
Ubuntu 16.04

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


Related notices

  • USN-4572-2: libspice-server1, spice-client, spice, libspice-server-dev