Ubuntu 12.04 LTS / 14.04 LTS / 16.04 LTS / 16.10 : libvncserver vulnerabilities (USN-3171-1)
High Nessus Plugin ID 96445
SynopsisThe remote Ubuntu host is missing one or more security-related patches.
DescriptionJosef Gajdusek discovered that the LibVNCServer client library incorrectly handled certain FrameBufferUpdate messages. If a user were tricked into connecting to a malicious server, an attacker could use this issue to cause a denial of service, or possibly execute arbitrary code. (CVE-2016-9941, CVE-2016-9942).
Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
SolutionUpdate the affected libvncclient1, libvncserver0 and / or libvncserver1 packages.