USN-775-1: Quagga vulnerability

12 May 2009

quagga vulnerability

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

  • Ubuntu 9.04
  • Ubuntu 8.10
  • Ubuntu 8.04 LTS
  • Ubuntu 6.06 LTS

Software Description

  • quagga


It was discovered that the BGP service in Quagga did not correctly handle certain AS paths containing 4-byte ASNs. An authenticated remote attacker could exploit this flaw to 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 9.04
quagga - 0.99.11-1ubuntu0.1
Ubuntu 8.10
quagga - 0.99.9-6ubuntu0.1
Ubuntu 8.04 LTS
quagga - 0.99.9-2ubuntu1.2
Ubuntu 6.06 LTS
quagga - 0.99.2-1ubuntu3.5

To update your system, please follow these instructions:

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