CVE-2017-6451

Published: 27 March 2017

The mx4200_send function in the legacy MX4200 refclock in NTP before 4.2.8p10 and 4.3.x before 4.3.94 does not properly handle the return value of the snprintf function, which allows local users to execute arbitrary code via unspecified vectors, which trigger an out-of-bounds memory write.

Priority

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package	Release	Status
ntp Launchpad, Ubuntu, Debian	precise	Not vulnerable (code not compiled)
	trusty	Not vulnerable (code not compiled)
	upstream	Needs triage
	xenial	Not vulnerable (code not compiled)
	yakkety	Not vulnerable (code not compiled)

Severity score breakdown

Parameter	Value
Base score	7.8
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Bugs

http://support.ntp.org/bin/view/Main/NtpBug3378

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