CVE-2016-0727

Publication date 22 January 2016

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

The crontab script in the ntp package before 1:4.2.6.p3+dfsg-1ubuntu3.11 on Ubuntu 12.04 LTS, before 1:4.2.6.p5+dfsg-3ubuntu2.14.04.10 on Ubuntu 14.04 LTS, on Ubuntu Wily, and before 1:4.2.8p4+dfsg-3ubuntu5.3 on Ubuntu 16.04 LTS allows local users with access to the ntp account to write to arbitrary files and consequently gain privileges via vectors involving statistics directory cleanup.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
ntp	17.04 zesty	Not affected
	16.10 yakkety	Not affected
	16.04 LTS xenial	Fixed 1:4.2.8p4+dfsg-3ubuntu5.3
	15.10 wily	Ignored end of life
	15.04 vivid	Ignored end of life
	14.04 LTS trusty	Fixed 1:4.2.6.p5+dfsg-3ubuntu2.14.04.10
	12.04 LTS precise	Fixed 1:4.2.6.p3+dfsg-1ubuntu3.11

Severity score breakdown

Parameter	Value
Base score	7.8 · High
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

Related Ubuntu Security Notices (USN)

USN-3096-1
NTP vulnerabilities
5 October 2016