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Category:   Application (Generic)  >   ntp Vendors:   ntp.org
(Ubuntu Issues Fix) ntp Multiple Bugs Let Remote or Local Users Cause the Target Service to Crash
SecurityTracker Alert ID:  1038832
SecurityTracker URL:  http://securitytracker.com/id/1038832
CVE Reference:   CVE-2016-9042, CVE-2017-6458, CVE-2017-6460, CVE-2017-6462, CVE-2017-6463, CVE-2017-6464   (Links to External Site)
Date:  Jul 6 2017
Impact:   Denial of service via local system, Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 4.2.8p9 and prior
Description:   Multiple vulnerabilities were reported in ntp. A remote or local user can cause the target service to crash.

A remote authenticated user can set a specially crafted configuration directive to cause the target ntpd service to crash [CVE-2017-6464].

A local user that can load a specially crafted '/dev/datum/' device can trigger a buffer overflow in datum_pts_receive() in the legacy Datum Programmable Time Server refclock driver and cause denial of service conditions [CVE-2017-6462].

A remote authenticated user can send a specially crafted ':config' directive to trigger a segmentation fault on the target NTP server [CVE-2017-6463].

A local user can cause DLLs to be executed with elevated privileges and cause denial of service conditions on Windows-based systems [CVE-2017-6455].

A local user can supply specially crafted command line parameters to trigger a stack overflow in addSourceToRegistry() on Windows-based systems [CVE-2017-6452].

A remote user can cause a data structure to be terminated incorrectly on Windows-based systems [CVE-2017-6459].

A remote user can send specially crafted data to trigger an overflow in the ctl_put() function and cause the target service to crash [CVE-2017-6458].

A remote user may be able to trigger an out-of-bounds memory write error in mx4200_send() on systems with the legacy MX4200 refclock enabled and cause the target service to crash [CVE-2017-6451].

A remote ntpd server can trigger a stack buffer overflow in ntpq when return a restriction list to cause the target ntpq service to crash [CVE-2017-6460].

A remote user that can spoof servers can exploit a timestamp origin check flaw and cause timestamp reset replies to be dropped [CVE-2016-9042].

Cure53 and Matthew Van Gundy of Cisco ASIG reported these vulnerabilities.

Impact:   A remote or local user can cause the target service to crash.
Solution:   Ubuntu has issued a fix for CVE-2016-9042, CVE-2017-6458, CVE-2017-6460, CVE-2017-6462, CVE-2017-6463, and CVE-2017-6464.

The Ubuntu advisory is available at:

https://www.ubuntu.com/usn/usn-3349-1

Vendor URL:  www.ubuntu.com/usn/usn-3349-1 (Links to External Site)
Cause:   Access control error, Boundary error, Input validation error, State error
Underlying OS:  Linux (Ubuntu)
Underlying OS Comments:  14.04 LTS, 16.04 LTS, 16.10, 17.04

Message History:   This archive entry is a follow-up to the message listed below.
Mar 24 2017 ntp Multiple Bugs Let Remote or Local Users Cause the Target Service to Crash



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