Several security issues were fixed in Quagga.
It was discovered that Quagga incorrectly handled dumping data. A remote attacker could possibly use a large BGP packet to cause Quagga to crash, resulting in a denial of service. (CVE-2016-4049)
13 October 2016
A security issue affects these releases of Ubuntu and its derivatives:
Several security issues were fixed in Quagga.
It was discovered that Quagga incorrectly handled dumping data. A remote attacker could possibly use a large BGP packet to cause Quagga to crash, resulting in a denial of service. (CVE-2016-4049)
It was discovered that the Quagga package incorrectly set permissions on the configuration directory. A local user could use this issue to possibly obtain sensitive information. (CVE-2016-4036)
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 Quagga to make all the necessary changes.