USN-5503-2: GnuPG vulnerability

USN-5503-2: GnuPG vulnerability

USN-5503-1 fixed a vulnerability in GnuPG. This update provides
the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.

Original advisory details:

Demi Marie Obenour discovered that GnuPG incorrectly handled injection in
the status message. A remote attacker could possibly use this issue to
forge signatures.
Source: USN-5503-2: GnuPG vulnerability