CVE-2018-7185

Published: 6 March 2018

The protocol engine in ntp 4.2.6 before 4.2.8p11 allows a remote attackers to cause a denial of service (disruption) by continually sending a packet with a zero-origin timestamp and source IP address of the "other side" of an interleaved association causing the victim ntpd to reset its association.

Priority

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package	Release	Status
ntp Launchpad, Ubuntu, Debian	upstream	Released (4.2.8p11)
	precise	Released (1:4.2.6.p3+dfsg-1ubuntu3.12)
	trusty	Released (1:4.2.6.p5+dfsg-3ubuntu2.14.04.13)
	xenial	Released (1:4.2.8p4+dfsg-3ubuntu5.9)
	artful	Released (1:4.2.8p10+dfsg-5ubuntu3.3)
	bionic	Released (1:4.2.8p10+dfsg-5ubuntu7.1)
	cosmic	Released (1:4.2.8p11+dfsg-1ubuntu1)
	Patches: upstream: http://bk.ntp.org/ntp-stable/?PAGE=cset&REV=5a7582492yN93iXAexe6x1wcM744TQ

Severity score breakdown

Parameter	Value
Base score	7.5
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Bugs

http://support.ntp.org/bin/view/Main/NtpBug3454

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