USN-3622-1: Wayland vulnerability

9 April 2018

wayland vulnerability

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

  • Ubuntu 17.10
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS

Summary

Wayland could be made to crash or run programs if it opened a specially crafted file.

Software Description

  • wayland - Wayland compositor infrastructure

Details

It was discovered that the Wayland Xcursor support incorrectly handled certain files. An attacker could use these issues to cause Wayland 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 17.10
libwayland-cursor0 - 1.14.0-1ubuntu0.1
Ubuntu 16.04 LTS
libwayland-bin - 1.12.0-1~ubuntu16.04.3
libwayland-client0 - 1.12.0-1~ubuntu16.04.3
libwayland-cursor0 - 1.12.0-1~ubuntu16.04.3
libwayland-dev - 1.12.0-1~ubuntu16.04.3
libwayland-doc - 1.12.0-1~ubuntu16.04.3
libwayland-server0 - 1.12.0-1~ubuntu16.04.3
Ubuntu 14.04 LTS
libwayland-cursor0 - 1.4.0-1ubuntu1.1

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

After a standard system update you need to reboot your computer to make all the necessary changes.

References