USN-3421-1: Libidn2 vulnerability
18 September 2017
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 17.04
Libidn2 could be made to crash if it received specially crafted input.
- libidn2-0 - Internationalized domain names (IDNA2008) library
It was discovered that Libidn2 incorrectly handled certain input. A remote attacker could possibly use this issue to cause Libidn2 to crash, resulting in a denial of service.
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.