Ubuntu Security Notice USN-3203-1
20th February, 2017
gtk-vnc vulnerabilities
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
Summary
gtk-vnc could be made to crash or run programs if it received specially
crafted network traffic.
Software description
- gtk-vnc
– VNC viewer widget
Details
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.
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 14.04 LTS:
-
libgtk-vnc-1.0-0
0.5.3-0ubuntu2.1
-
libgvnc-1.0-0
0.5.3-0ubuntu2.1
-
libgtk-vnc-2.0-0
0.5.3-0ubuntu2.1
- Ubuntu 12.04 LTS:
-
libgtk-vnc-1.0-0
0.5.0-1ubuntu1.1
-
libgvnc-1.0-0
0.5.0-1ubuntu1.1
-
libgtk-vnc-2.0-0
0.5.0-1ubuntu1.1
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.