USN-5956-2: PHPMailer vulnerability

USN-5956-1 fixed vulnerabilities in PHPMailer. It was discovered that the
fix for CVE-2017-11503 was incomplete. This update fixes the problem.

Original advisory details:

Dawid Golunski discovered that PHPMailer was not properly escaping user
input data used as arguments to functions executed by the system shell. An
attacker could possibly use this issue to execute arbitrary code. This
issue only affected Ubuntu 16.04 ESM. (CVE-2016-10033, CVE-2016-10045)

It was discovered that PHPMailer was not properly escaping characters
in certain fields of the …

advisory characters code cve data fix fixes functions input issue phpmailer problem shell system ubuntu update usn vulnerabilities vulnerability