RHSA-2016:0063: ntp security update

Description

The Network Time Protocol (NTP) is used to synchronize a computer's timewith a referenced time source.It was discovered that ntpd as a client did not correctly check theoriginate timestamp in received packets. A remote attacker could use thisflaw to send a crafted packet to an ntpd client that would effectivelydisable synchronization with the server, or push arbitrary offset/delaymeasurements to modify the time on the client. (CVE-2015-8138)All ntp users are advised to upgrade to these updated packages, whichcontain a backported patch to resolve this issue. After installing theupdate, the ntpd daemon will restart automatically.