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AUSCERT External Security Bulletin Redistribution
ESB-2017.0472
gtk-vnc vulnerabilities
21 February 2017
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AusCERT Security Bulletin Summary
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Product: gtk-vnc
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Denial of Service -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2017-5885 CVE-2017-5884
Original Bulletin:
http://www.ubuntu.com/usn/usn-3203-1
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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
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