This is something of a repeat. As openstack has gotten caught before not cleaning out reusable memory locations.
As has Amazon. But, it’s always annoying to see a vulnerability that has previously bit us in the ass come back to do so again.
OpenStack Security Advisory: 2012-020
Date: December 11, 2012
Title: Information leak in libvirt LVM-backed instances
Reporter: Eric Windisch (Cloudscaling)
Affects: Folsom, Grizzly
Eric Windisch from Cloudscaling reported a vulnerability in libvirt
LVM-backed instances. The physical volume content was not wiped out
before being reallocated and passed to an instance, which may result in
the disclosure of information from previously-allocated logical volumes.
Only setups using libvirt and LVM-backed instances
(libvirt_images_type=lvm) are affected.