This script is Copyright (C) 2013-2015 Tenable Network Security, Inc.
The remote device is missing a vendor-supplied security patch.
A vulnerability in the implementation of the Network Time Protocol
(NTP) feature in Cisco IOS XE Software allows an unauthenticated,
remote attacker to cause an affected device to reload, resulting in a
denial of service (DoS) condition. The vulnerability is due to
improper handling of multicast NTP packets that are sent to an
affected device encapsulated in a Multicast Source Discovery Protocol
(MSDP) Source-Active (SA) message from a configured MSDP peer. An
attacker can exploit this vulnerability by sending multicast NTP
packets to an affected device. Repeated exploitation can result in a
sustained DoS condition. Cisco has released free software updates that
address this vulnerability. A workaround is available to mitigate this
See also :
Apply the relevant patch referenced in Cisco security advisory
Risk factor :
High / CVSS Base Score : 7.1
CVSS Temporal Score : 6.2
Public Exploit Available : true
Nessus Plugin ID: 70321 ()
Bugtraq ID: 62640
CVE ID: CVE-2013-5472
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