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Ubuntu 14.04 LTS: USN-3203-1 Critical Threat: gtk-vnc DoS

ubuntu
Calendar Grey February 20, 2017
Dist Ubuntu Esm H88
Debian Security Alert DSA-4212-1 addresses vulnerabilities in libssh2; monitor channels for potential risks and secure your systems!
gtk-vnc could be made to crash or run programs if it received specially crafted network traffic.

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.

Topics%20covered

Topics Covered

security advisory denial of service ubuntu network exploit gtk-vnc

Update Instructions

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

Ubuntu 14.04 LTS:
  libgtk-vnc-1.0-0                0.5.3-0ubuntu2.1
  libgtk-vnc-2.0-0                0.5.3-0ubuntu2.1
  libgvnc-1.0-0                   0.5.3-0ubuntu2.1

Ubuntu 12.04 LTS:
  libgtk-vnc-1.0-0                0.5.0-1ubuntu1.1
  libgtk-vnc-2.0-0                0.5.0-1ubuntu1.1
  libgvnc-1.0-0                   0.5.0-1ubuntu1.1

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

References

https://ubuntu.com/security/notices/USN-3203-1

CVE-2017-5884, CVE-2017-5885

Severity
critical
Lowest
Low
Medium
High
Critical

February 20, 2017

Topics%20covered

Topics Covered

security advisory denial of service ubuntu network exploit gtk-vnc

Package Information

https://launchpad.net/ubuntu/+source/gtk-vnc/0.5.3-0ubuntu2.1
https://launchpad.net/ubuntu/+source/gtk-vnc/0.5.0-1ubuntu1.1

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