USN-5192-2: Apache Log4j 2 vulnerability

USN-5192-2: Apache Log4j 2 vulnerability

USN-5192-1 fixed a vulnerability in Apache Log4j 2. This update provides
the corresponding update for Ubuntu 16.04 ESM.

Original advisory details:

Chen Zhaojun discovered that Apache Log4j 2 allows remote attackers to run
programs via a special crafted input. An attacker could use this vulnerability
to cause a denial of service or possibly execute arbitrary code.
Source: USN-5192-2: Apache Log4j 2 vulnerability