USN-512-1: Quagga vulnerability

15 September 2007

quagga vulnerability

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

  • Ubuntu 7.04
  • Ubuntu 6.10
  • Ubuntu 6.06 LTS

Software Description

  • quagga


It was discovered that Quagga did not correctly verify OPEN messages or COMMUNITY attributes sent from configured peers. Malicious authenticated remote peers could send a specially crafted message which would cause bgpd to abort, leading to a denial of service.

Update instructions

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

Ubuntu 7.04
quagga - 0.99.6-2ubuntu3.2
Ubuntu 6.10
quagga - 0.99.4-4ubuntu1.2
Ubuntu 6.06 LTS
quagga - 0.99.2-1ubuntu3.3

To update your system, please follow these instructions:

In general, a standard system upgrade is sufficient to effect the necessary changes.