USN-1501-1: Nova vulnerability

11 July 2012

nova vulnerability

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

  • Ubuntu 12.04 LTS


Nova could be made to not respond if passed specially crafted input.

Software Description

  • nova - OpenStack Compute cloud infrastructure


Dan Prince discovered that the Nova scheduler, when using DifferentHostFilter or SameHostFilter, would make repeated database instance lookup calls based on passed scheduler hints. An authenticated attacker could use this to cause a denial of service.

Update instructions

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

Ubuntu 12.04 LTS
python-nova - 2012.1+stable~20120612-3ee026e-0ubuntu1.2

To update your system, please follow these instructions:

In general, a standard system update will make all the necessary changes.