7.5
CVSSv3

CVE-2016-4953

Published: 05/07/2016 Updated: 21/11/2024

Vulnerability Summary

ntpd in NTP 4.x prior to 4.2.8p8 allows remote malicious users to cause a denial of service (ephemeral-association demobilization) by sending a spoofed crypto-NAK packet with incorrect authentication data at a certain time.

Vulnerability Trend

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ntp ntp

ntp ntp 4.2.8

oracle solaris 10

oracle solaris 11.3

suse manager 2.1

suse manager proxy 2.1

suse openstack cloud 5

opensuse leap 42.1

opensuse opensuse 13.2

suse linux enterprise desktop 12

suse linux enterprise server 11

suse linux enterprise server 12

siemens simatic net cp 443-1 opc ua firmware

siemens tim 4r-ie firmware

siemens tim 4r-ie dnp3 firmware

Vendor Advisories

It was discovered that ntpd as a client did not correctly check the originate timestamp in received packets A remote attacker could use this flaw to send a crafted packet to an ntpd client that would effectively disable synchronization with the server, or push arbitrary offset/delay measurements to modify the time on the client (CVE-2015-8138) A ...
ntpd in NTP 4x before 428p8 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 ...