[Openstack-security] Deriving Instance UUID

Russell Bryant rbryant at redhat.com
Tue Dec 10 15:09:49 UTC 2013


On 12/10/2013 10:02 AM, Michael Still wrote:
> Hmmm.
> 
> If you know the UUID of an instance, and can assume default
> configurations, then you know a bunch of information about how the
> files on the hypervisor disk are laid out.
> 
> Assuming:
>  - you're running an old release without patches (I'm thinking  Folsom
> from memory?)
>  - and have file injection turned on
>  - and know the path to another instance's data
>  - then that might make it possible to manipulate files in the
> instance directory
> 
> This is very theoretical though, there's a lot of assumptions there.

Assuming you can get at the host filesystem, right?  And if you can get
to the host filesystem, well ... there's plenty possibilities for bad
things.

-- 
Russell Bryant




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