LibVNCServer could be made to crash, expose sensitive information, or run programs if it received specially crafted network traffic.
It was discovered that LibVNCServer incorrectly handled certain packet lengths. A remote attacker able to connect to a LibVNCServer could possibly use this issue to obtain sensitive information, cause a denial of service, or execute arbitrary code.
4 April 2018
A security issue affects these releases of Ubuntu and its derivatives:
LibVNCServer could be made to crash, expose sensitive information, or run programs if it received specially crafted network traffic.
It was discovered that LibVNCServer incorrectly handled certain packet lengths. A remote attacker able to connect to a LibVNCServer could possibly use this issue to obtain sensitive information, cause a denial of service, or execute arbitrary code.
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to restart LibVNCServer applications to make all the necessary changes.
Vulmon