Bug 1397331 (CVE-2016-7431)

Summary:	CVE-2016-7431 ntp: Zero Origin timestamp regression
Product:	[Other] Security Response	Reporter:	Adam Mariš <amaris>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	carnil, mlichvar, sardella, slawomir, yozone
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	ntp-4.2.8p9	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-11-24 14:21:20 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1397349

Description Adam Mariš 2016-11-22 10:37:07 UTC

Zero Origin timestamp problems were fixed by Bug 2945 in ntp-4.2.8p6. However, subsequent timestamp validation checks introduced a regression in the handling of some Zero origin timestamp checks.

External References:

http://support.ntp.org/bin/view/Main/NtpBug3102

Comment 1 Adam Mariš 2016-11-22 11:09:23 UTC

Created ntp tracking bugs for this issue:

Affects: fedora-all [bug 1397351]

Comment 3 Adam Mariš 2016-11-24 14:21:20 UTC

Statement:

This issue did not affect the versions of ntp as shipped with Red Hat Enterprise Linux 5, 6 and 7.