USN-5378-4: Gzip vulnerability

USN-5378-4: Gzip vulnerability

USN-5378-1 fixed a vulnerability in Gzip. This update provides
the corresponding update for Ubuntu 14.04 ESM and 16.04 ESM.

Original advisory details:

Cleemy Desu Wayo discovered that Gzip incorrectly handled certain
filenames. If a user or automated system were tricked into performing zgrep
operations with specially crafted filenames, a remote attacker could
overwrite arbitrary files.
Source: USN-5378-4: Gzip vulnerability