ntpd in NTP 4.x before 4.2.8p8 allows remote attackers to cause a denial of service (ephemeral-association demobilization) by sending a spoofed crypto-NAK packet with incorrect authentication data at a certain time.
Max CVSS
7.5
EPSS Score
2.32%
Published
2016-07-05
Updated
2021-07-16
The process_packet function in ntp_proto.c in ntpd in NTP 4.x before 4.2.8p8 allows remote attackers to cause a denial of service (peer-variable modification) by sending spoofed packets from many source IP addresses in a certain scenario, as demonstrated by triggering an incorrect leap indication.
Max CVSS
7.5
EPSS Score
2.29%
Published
2016-07-05
Updated
2021-07-16
ntpd in NTP 4.x before 4.2.8p8, when autokey is enabled, allows remote attackers to cause a denial of service (peer-variable clearing and association outage) by sending (1) a spoofed crypto-NAK packet or (2) a packet with an incorrect MAC value at a certain time.
Max CVSS
5.9
EPSS Score
1.83%
Published
2016-07-05
Updated
2021-07-16
ntpd in NTP 4.x before 4.2.8p8 allows remote attackers to cause a denial of service (interleaved-mode transition and time change) via a spoofed broadcast packet. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-1548.
Max CVSS
5.3
EPSS Score
2.03%
Published
2016-07-05
Updated
2021-07-16
ntpd in NTP before 4.2.8p8 allows remote attackers to cause a denial of service (daemon crash) via a crypto-NAK packet. NOTE: this vulnerability exists because of an incorrect fix for CVE-2016-1547.
Max CVSS
7.5
EPSS Score
92.98%
Published
2016-07-05
Updated
2020-06-18
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