The remote host is missing an update to ntp announced via advisory FEDORA-2009-13121.
Apply the appropriate updates. This update can be installed with the yum update program. Use su -c 'yum update ntp' at the command line. For more information, refer to Managing Software with yum, available at http://docs.fedoraproject.org/yum/. https://secure1.securityspace.com/smysecure/catid.html?in=FEDORA-2009-13121
Update Information: This update fixes possible DoS with mode 7 packets. (CVE-2009-3563) ChangeLog: * Wed Dec 9 2009 Miroslav Lichvar 4.2.4p7-2 - fix DoS with mode 7 packets (#545557, CVE-2009-3563)
Updated on 2015-03-25
CVE CVE-2009-0021, CVE-2009-0159, CVE-2009-1252, CVE-2009-3563
CVSS Base Score: 6.8