USN-3110-1: Quagga vulnerability

25 October 2016

quagga vulnerability

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

  • Ubuntu 16.10
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS
  • Ubuntu 12.04 LTS


Quagga could be made to crash if it received specially crafted network traffic.

Software Description

  • quagga - BGP/OSPF/RIP routing daemon


David Lamparter discovered that Quagga incorrectly handled certain IPv6 router advertisements. A remote attacker could possibly use this issue to cause Quagga to crash, resulting in a denial of service.

Update instructions

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

Ubuntu 16.10
quagga - 1.0.20160315-2ubuntu0.1
Ubuntu 16.04 LTS
quagga -
Ubuntu 14.04 LTS
quagga -
Ubuntu 12.04 LTS
quagga -

To update your system, please follow these instructions:

After a standard system update you need to restart Quagga to make all the necessary changes.