USN-4229-1: NTP vulnerability

Releases

• Ubuntu 16.04 ESM
• Ubuntu 14.04 ESM
• Ubuntu 12.04

Packages

• ntp - Network Time Protocol daemon and utility programs

Details

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

• ntp - 1:4.2.8p4+dfsg-3ubuntu5.10

Ubuntu 14.04

• ntp - 1:4.2.6.p5+dfsg-3ubuntu2.14.04.13+esm1
  Available with Ubuntu Pro

Ubuntu 12.04

• ntp - 1:4.2.6.p3+dfsg-1ubuntu3.13

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

References

• CVE-2018-12327

Related notices

• USN-4229-2: ntp, ntp-doc, sntp, ntpdate