[USN-3659-1] Spice vulnerability

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Ubuntu Security Notice USN-3659-1
May 23, 2018

spice, spice-protocol vulnerability
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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

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
- spice-protocol: SPICE protocol headers

Details:

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

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

References:
  https://usn.ubuntu.com/usn/usn-3659-1
  CVE-2017-12194

Package Information:
  https://launchpad.net/ubuntu/+source/spice/0.14.0-1ubuntu2.1
  https://launchpad.net/ubuntu/+source/spice/0.12.8-2.2ubuntu0.1
  https://launchpad.net/ubuntu/+source/spice-protocol/0.12.10-1ubuntu0.1
  https://launchpad.net/ubuntu/+source/spice/0.12.4-0nocelt2ubuntu1.6