Bug 1274261 (CVE-2015-7852)

Summary:	CVE-2015-7852 ntp: ntpq atoascii memory corruption vulnerability
Product:	[Other] Security Response	Reporter:	Martin Prpič <mprpic>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	dsirrine, gnaik, jaeshin, jwright, mlichvar, moshiro, sardella, security-response-team, slawomir, yozone
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	ntp 4.2.8p4	Doc Type:	Bug Fix
Doc Text:	An off-by-one flaw, leading to a buffer overflow, was found in cookedprint functionality of ntpq. A specially crafted NTP packet could potentially cause ntpq to crash.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-11-06 04:14:09 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:	1274351, 1296207, 1317795
Bug Blocks:	1260670, 1323912

Description Martin Prpič 2015-10-22 11:31:18 UTC

The following flaw was found in ntpd:

A potential off by one vulnerability exists in the cookedprint functionality of ntpq. A specially crafted buffer could cause a buffer overflow potentially resulting in null byte being written out of bounds.

External References:

http://talosintel.com/reports/TALOS-2015-0063/
http://support.ntp.org/bin/view/Main/NtpBug2919

Comment 1 Martin Prpič 2015-10-22 14:34:13 UTC

Created ntp tracking bugs for this issue:

Affects: fedora-all [bug 1274351]

Comment 2 Martin Prpič 2015-10-23 09:11:18 UTC

Upstream patch:

https://github.com/ntp-project/ntp/commit/07a5b8141e354a998a52994c3c9cd547927e56ce

Comment 3 Fedora Update System 2015-11-02 18:52:59 UTC

ntp-4.2.6p5-34.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.

Comment 4 Fedora Update System 2015-11-04 22:49:34 UTC

ntp-4.2.6p5-34.fc21 has been pushed to the Fedora 21 stable repository. If problems still persist, please make note of it in this bug report.

Comment 11 Fedora Update System 2016-02-21 02:25:18 UTC

ntp-4.2.6p5-36.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.

Comment 13 errata-xmlrpc 2016-05-10 20:17:40 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2016:0780 https://rhn.redhat.com/errata/RHSA-2016-0780.html

Comment 14 errata-xmlrpc 2016-11-03 19:33:08 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2016:2583 https://rhn.redhat.com/errata/RHSA-2016-2583.html