This script is Copyright (C) 2014-2015 Tenable Network Security, Inc.
The remote Amazon Linux AMI host is missing a security update.
The installUpdates function in yum-cron/yum-cron.py in yum 3.4.3 and
earlier does not properly check the return value of the sigCheckPkg
function, which allows remote attackers to bypass the RMP package
signing restriction via an unsigned package.
See also :
Run 'yum update yum' to update your system.
Risk factor :
Medium / CVSS Base Score : 5.0