Ubuntu Security Notice USN-3203-1
20th February, 2017
A security issue affects these releases of Ubuntu and its
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
gtk-vnc could be made to crash or run programs if it received specially
crafted network traffic.
– VNC viewer widget
It was discovered that gtk-vnc incorrectly validated certain data. A
malicious server could use this issue to cause gtk-vnc to crash, resulting
in a denial of service, or possibly execute arbitrary code.
The problem can be corrected by updating your system to the following
- Ubuntu 14.04 LTS:
- Ubuntu 12.04 LTS:
To update your system, please follow these instructions:
In general, a standard system update will make all the necessary changes.