USN-5355-2: zlib vulnerability

USN-5355-2: zlib vulnerability

USN-5355-1 fixed a vulnerability in zlib. This update provides
the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.

Original advisory details:

Danilo Ramos discovered that zlib incorrectly handled memory when
performing certain deflating operations. An attacker could use this issue
to cause zlib to crash, resulting in a denial of service, or possibly
execute arbitrary code.
Source: USN-5355-2: zlib vulnerability