On Thu, 2011-05-26 at 09:34 -0700, Casey Schaufler wrote: > On 5/25/2011 11:08 PM, Pavel Machek wrote: > > ... > > Fourthly, is it likely to find its way to the next cellphone I buy, > > and will it prevent me from rooting it? > > Pavel > > That will of course depend on the phone vendor. You are certainly > going to be able to vote with your checkbook (digital wallet?) but > odds are pretty good that should EVM prove effective it will be > ubiquitous within the next five years on embedded devices. um, not quite the right threat model... Rooting is normally done through an exploit of the loader or the kernel, neither of which EVM can prevent. The phones which have blocked rooting in hardware have done so by adding and enforcing digital signatures on the boot images, which is entirely orthogonal to EVM. Whether or not the phone is rooted, IMA-Appraisal, EVM, and the Digital Signature Extensions help protect against remote software attacks, and offline hardware attacks on individual files, but not against rooting itself. dave (happy owner of a rooted Droid) -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
