Amazon Linux AMI Security Advisory: ALAS-2017-912
Advisory Release Date: 2017-10-13 00:11 Pacific
Command injection flaw within "enriched mode" handling:
A command injection flaw within the Emacs "enriched mode" handling has been discovered. By tricking an unsuspecting user into opening a specially crafted file using Emacs, a remote attacker could exploit this flaw to execute arbitrary commands with the privileges of the Emacs user. (CVE-2017-14482 )
Run yum update emacs to update your system.