USN-1831-1: OpenStack Nova vulnerability

16 May 2013

Nova could be made to crash the system if instances used a specially crafted image.



  • nova - OpenStack Compute cloud infrastructure


Loganathan Parthipan discovered that Nova did not verify the size of QCOW2
instance storage. An authenticated attacker could exploit this to cause a
denial of service by creating an image with a large virtual size with
little data, then filling the virtual disk.

Update instructions

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

Ubuntu 13.04
Ubuntu 12.10
Ubuntu 12.04

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