Amazon Linux AMI Security Advisory: ALAS-2012-110
Advisory Release Date: 2012-07-25 18:00 Pacific
Advisory Updated Date: 2014-09-14 16:47 Pacific
A flaw was found in the way the network matching code in sudo handled multiple IP networks listed in user specification configuration directives. A user, who is authorized to run commands with sudo on specific hosts, could use this flaw to bypass intended restrictions and run those commands on hosts not matched by any of the network specifications. (CVE-2012-2337)
Run yum update sudo to update your system.