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USN-4229-1: NTP vulnerability

09 January 2020

A security issue was fixed in ntpq and ntpdc.



  • ntp - Network Time Protocol daemon and utility programs


It was discovered that ntpq and ntpdc incorrectly handled some arguments.
An attacker could possibly use this issue to cause ntpq or ntpdc to crash,
execute arbitrary code, or escalate to higher privileges.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 16.04
Ubuntu 14.04
Ubuntu 12.04

In general, a standard system update will make all the necessary changes.