USN-5359-2: rsync vulnerability

USN-5359-2: rsync vulnerability

USN-5359-1 fixed vulnerabilities in rsync.
This update provides the corresponding updates for Ubuntu 16.04 ESM.

Original advisory details:

Danilo Ramos discovered that rsync incorrectly handled memory when
performing certain zlib deflating operations. An attacker could use this
issue to cause rsync to crash, resulting in a denial of service, or
possibly execute arbitrary code.
Source: USN-5359-2: rsync vulnerability