Network Time Protocol (NTP) Amplification Attacks

["US-CERT" <US-CERT () ncas us-cert gov>]

NCCIC / US-CERT

National Cyber Awareness System:

Network Time Protocol (NTP) Amplification Attacks [ 
https://www.us-cert.gov/ncas/current-activity/2014/01/10/Network-Time-Protocol-NTP-Amplification-Attacks ] 01/10/2014 
01:35 PM EST 
Original release date: January 10, 2014

A vulnerability in the "monlist" feature of NTP can allow remote attackers to cause distributed denial of service 
attack (DDoS) via forged requests. US-CERT and the Canadian Cyber Incident Response Center (CCIRC) have both observed 
active use of this attack vector in recent DDoS attacks.

US-CERT encourages users and administrators to review the CCIRC document [ 
http://www.publicsafety.gc.ca/cnt/rsrcs/cybr-ctr/2014/av14-001-eng.aspx ] as well as US-CERT Vulnerability Note 
VU348126 [ http://www.kb.cert.org/vuls/id/348126 ] for more information.

________________________________________________________________________

This product is provided subject to this Notification [ http://www.us-cert.gov/privacy/notification ] and this Privacy 
& Use [ http://www.us-cert.gov/privacy/ ] policy.

________________________________________________________________________

OTHER RESOURCES: Contact Us [ http://www.us-cert.gov/contact-us/ ] | Security Publications [ 
http://www.us-cert.gov/security-publications ] | Alerts and Tips [ http://www.us-cert.gov/ncas ] | Related Resources [ 
http://www.us-cert.gov/related-resources ] 

STAY CONNECTED: Sign up for email updates [ http://public.govdelivery.com/accounts/USDHSUSCERT/subscriber/new ]