USN-2980-1: libndp vulnerability

Ubuntu Security Notice USN-2980-1

17th May, 2016

libndp vulnerability

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

  • Ubuntu 16.04 LTS
  • Ubuntu 15.10

Summary

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

Software description

  • libndp - Library for Neighbor Discovery Protocol

Details

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 version:

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: https://wiki.ubuntu.com/Security/Upgrades.

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

References

CVE-2016-3698