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Category:   Application (Generic)  >   ntp Vendors:   ntp.org
ntp Debian/Ubuntu Cron Job Lets Local Users Obtain Root Privileges
SecurityTracker Alert ID:  1034808
SecurityTracker URL:  http://securitytracker.com/id/1034808
CVE Reference:   CVE-2016-0727   (Links to External Site)
Date:  Jan 26 2016
Impact:   Root access via local system
Vendor Confirmed:  Yes  Exploit Included:  Yes  

Description:   A vulnerability was reported in ntp on Debian/Ubuntu Linux. A local user can obtain root privileges on the target system.

The '/etc/cron.daily/ntp' script distributed with Debian-based Linux systems performs unsafe operations on ntp statistics files owned by the 'ntp' user with root privileges. A local user can modify the files to cause the script to modify arbitrary files with root privileges.

The original advisory is available at:

http://www.halfdog.net/Security/2015/NtpCronjobUserNtpToRootPrivilegeEscalation/

Eric Romang reported this vulnerability.

Impact:   A local user can obtain root privileges on the target system.
Solution:   No solution was available at the time of this entry.
Cause:   Access control error
Underlying OS:  Linux (Debian), Linux (Ubuntu)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Oct 6 2016 (Ubuntu Issues Fix) ntp Debian/Ubuntu Cron Job Lets Local Users Obtain Root Privileges
Ubuntu has issued a fix for Ubuntu Linux 12.04 LTS, 14.04 LTS, and 16.04 LTS.



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