Several security issues were fixed in libytnef.
It was discovered that libytnef incorrectly handled certain files. An attacker could possibly use this to cause a denial of service. (CVE-2017-12141, CVE-2017-9146, CVE-2017-9471, CVE-2017-9473)
31 May 2018
A security issue affects these releases of Ubuntu and its derivatives:
Several security issues were fixed in libytnef.
It was discovered that libytnef incorrectly handled certain files. An attacker could possibly use this to cause a denial of service. (CVE-2017-12141, CVE-2017-9146, CVE-2017-9471, CVE-2017-9473)
It was discovered that libytnef incorrectly handled certain files. An attacker could possibly use this to access sensitive information. (CVE-2017-9058)
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 applications using libytnef, such as Evolution, to make all the necessary changes.
Vulmon