Comment 53 for bug 1221190
Revision history for this message
| Tristan Cacqueray (tristan-cacqueray) wrote Re: Image format not enforced when using rescue | #53 |
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a60fb26
(Get the code!)
Added Nova in title and the new affected version field.
Draft impact description #3 -
Title: Nova host data leak to vm instance in rescue mode.
Reporter: Stanislaw Pitucha (HP)
Products: Nova
Versions: 2013.1.1 to 2013.1.4 and 2013.2 versions up to 2013.2.1
Description:
Stanislaw Pitucha from Hewlett Packard reported a vulnerability in the Nova instance rescue mode. By overwriting the disk inside an instance with a malicious image and switching the instance to rescue mode, an authenticated user would be able to leak an arbitrary file from the compute host to the virtual instance. Note that the host file must be readable by the libvirt/kvm context to be exposed. Only setups using libvirt to spawn instance, and having "use_cow_images = False" in Nova configuration are affected.