This script is Copyright (C) 2012-2015 Tenable Network Security, Inc.
The remote Scientific Linux host is missing a security update.
The dnsmasq DNS resolver used a fixed source UDP port. This could have
made DNS spoofing attacks easier. dnsmasq has been updated to use
random UDP source ports, helping to make DNS spoofing attacks harder.
See also :
Update the affected dnsmasq package.
Risk factor :
Medium / CVSS Base Score : 5.0