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NTP mode 7 MODE_PRIVATE Packet Remote Denial of Service Vulnerability

oval:org.mitre.oval:def:7076

ntp_request.c in ntpd in NTP before 4.2.4p8 and 4.2.5 allows remote attackers to cause a denial of service (CPU and bandwidth consumption) by using MODE_PRIVATE to send a spoofed (1) request or (2) response packet that triggers a continuous exchange of MODE_PRIVATE error responses between two NTP daemons.

Family:
unix
Status:
ACCEPTED
Platform(s):
  • VMWare ESX Server 4.0
Class:
vulnerability
Reference(s):
  • CVE-2009-3563
Product(s):