USN-2980-1: libndp vulnerability

17 May 2016

libndp vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 16.04 LTS
  • Ubuntu 15.10


libndp could be tricked into accepting an NDP message from outside the local network.

Software Description

  • libndp - Library for Neighbor Discovery Protocol


Julien Bernard discovered that libndp incorrectly performed origin checks when receiving Neighbor Discovery Protocol (NDP) messages. A remote attacker outside of the local network could use this issue to advertise a node as a router, causing a denial of service, or possibly to act as a man in the middle.

Update instructions

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

Ubuntu 16.04 LTS
libndp0 - 1.4-2ubuntu0.16.04.1
Ubuntu 15.10
libndp0 - 1.4-2ubuntu0.15.10.1

To update your system, please follow these instructions:

After a standard system update you need to reboot your computer to make all the necessary changes.