USN-3203-1: gtk-vnc vulnerabilities

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.

References

CVE-2017-5884,

CVE-2017-5885

Source: USN-3203-1: gtk-vnc vulnerabilities

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