=========================================================================Ubuntu Security Notice USN-3650-1
May 21, 2018

xdg-utils vulnerability
=========================================================================
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:

xdg-utils could be made to run arbitrary code if it received a
specially crafted input.

Software Description:
- xdg-utils: desktop integration utilities from freedesktop.org

Details:

It was discovered that xdg-utils incorrectly handled certain inputs.
An attacker could possibly use this to execute arbitrary code.

Update instructions:

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

Ubuntu 18.04 LTS:
  xdg-utils                       1.1.2-1ubuntu2.2

Ubuntu 17.10:
  xdg-utils                       1.1.1-1ubuntu3.2

Ubuntu 16.04 LTS:
  xdg-utils                       1.1.1-1ubuntu1.16.04.3

Ubuntu 14.04 LTS:
  xdg-utils                       1.1.0~rc1-2ubuntu7.2

In general, a standard system update will make all the necessary
changes.

References:
  https://ubuntu.com/security/notices/USN-3650-1
  CVE-2017-18266

Package Information:
  https://launchpad.net/ubuntu/+source/xdg-utils/1.1.2-1ubuntu2.2
  https://launchpad.net/ubuntu/+source/xdg-utils/1.1.1-1ubuntu3.2
  https://launchpad.net/ubuntu/+source/xdg-utils/1.1.1-1ubuntu1.16.04.3
  https://launchpad.net/ubuntu/+source/xdg-utils/1.1.0~rc1-2ubuntu7.2