It was discovered that Quagga did not correctly verify length information sent from configured peers. Remote malicious peers could send a specially crafted UPDATE message which would cause bgpd to abort, leading to a denial of service.
The problem can be corrected by updating your system to the following package versions:
17 May 2007
A security issue affects these releases of Ubuntu and its derivatives:
It was discovered that Quagga did not correctly verify length information sent from configured peers. Remote malicious peers could send a specially crafted UPDATE message which would cause bgpd to abort, leading to a denial of service.
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system upgrade is sufficient to effect the necessary changes.
Vulmon