[USN-4572-2] Spice vulnerability

[Leonidas S. Barbosa]

==========================================================================
Ubuntu Security Notice USN-4572-2
October 07, 2020

spice vulnerability
==========================================================================

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

- Ubuntu 14.04 ESM

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:

USN-4572-1 fixed a vulnerability in Spice. This update provides
the corresponding update for Ubuntu 14.04 ESM.

Original advisory 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.

Update instructions:

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

Ubuntu 14.04 ESM:
  libspice-server1                0.12.4-0nocelt2ubuntu1.8+esm1

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

References:
  https://usn.ubuntu.com/4572-2
  https://usn.ubuntu.com/4572-1
  CVE-2020-14355
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