The NTP Project at Network Time Foundation publicly released ntp-4.2.8p13 on Thursday, 07 March 2019.

This release fixes one security issue in ntpd:

• MEDIUM: Sec 3565: Crafted null dereference attack from a trusted source with an authenticated mode 6 packet

  • A crafted malicious authenticated mode 6 (ntpq) packet from a permitted network address can trigger a NULL pointer dereference, crashing ntpd. Note that for this attack to work, the sending system must be on an address that the target’s ntpd accepts mode 6 packets from, and must properly authenticate the packet with a private key that is specifically listed as being used for mode 6 authorization.

  • Reported by Magnus Stubman.

and provides 17 bugfixes and 1 other improvement.

ENotification of these issues were delivered to our Institutional members on a rolling basis as they were reported and as progress was made.

Timeline:

• 2019 Mar 07: Public release

• 2019 Feb 20: Release to Advance Security Partners

• 2019 Jan 16: Notification to Institutional Members

• 2019 Jan 15: Notification from reporter