CVE-2017-6458

Publication date 27 March 2017

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

Multiple buffer overflows in the ctl_put* functions in NTP before 4.2.8p10 and 4.3.x before 4.3.94 allow remote authenticated users to have unspecified impact via a long variable.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
ntp	21.04 hirsute	Not affected
	20.10 groovy	Not affected
	20.04 LTS focal	Not affected
	19.10 eoan	Not affected
	19.04 disco	Not affected
	18.10 cosmic	Not affected
	18.04 LTS bionic	Not affected
	17.10 artful	Not affected
	17.04 zesty	Fixed 1:4.2.8p9+dfsg-2ubuntu1.1
	16.10 yakkety	Fixed 1:4.2.8p8+dfsg-1ubuntu2.1
	16.04 LTS xenial	Fixed 1:4.2.8p4+dfsg-3ubuntu5.5
	14.04 LTS trusty	Fixed 1:4.2.6.p5+dfsg-3ubuntu2.14.04.11
	12.04 LTS precise	Ignored end of life

Notes

mdeslaur

This is not a vulnerability per se, but a weakness in an internal helper function

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
ntp	Upstream: http://bk1.ntp.org/ntp-stable/?PAGE=cset&REV=58a008c2PtxGYR8g6fLpoaFecrZ-zQ

Severity score breakdown

Parameter	Value
Base score	8.8 · High
Attack vector	Network
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H