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Ubuntu Security Notice USN-3622-1
April 09, 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

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

References:
https://usn.ubuntu.com/usn/usn-3622-1
CVE-2017-16612

Package Information:
https://launchpad.net/ubuntu/+source/wayland/1.14.0-1ubuntu0.1
https://launchpad.net/ubuntu/+source/wayland/1.12.0-1~ubuntu16.04.3
https://launchpad.net/ubuntu/+source/wayland/1.4.0-1ubuntu1.1

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