OptiPNG could be made to crash or run programs as your login if it opened a specially crafted file.
It was discovered that OptiPNG incorrectly handled memory. A remote attacker could use this issue with a specially crafted image file to cause OptiPNG to crash, resulting in a denial of service, or possibly execute arbitrary code.
27 November 2017
A security issue affects these releases of Ubuntu and its derivatives:
OptiPNG could be made to crash or run programs as your login if it opened a specially crafted file.
It was discovered that OptiPNG incorrectly handled memory. A remote attacker could use this issue with a specially crafted image file to cause OptiPNG to crash, resulting in a denial of service, or possibly 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.
In general, a standard system update will make all the necessary changes.
Vulmon