28 Feb
2013
28 Feb
'13
4:25 p.m.
On Feb 28, 2013, at 4:17 PM, Dave Wade wrote:
I haven't heard of any. It's a modern linux
and most tasks run as non-root.
In addition on its a non-standard chip set so standard buffer over runs
don't work.
Er, what? Buffer overruns are the same regardless of what chipset
you run, at least as long as your stack grows downwards (most stacks,
including ARMs' stacks, do). Stack headspace randomization, which
is generally a software thing, can cause the code intended to be
executed by a buffer overrun fail (since there's no static offset to
branch to), but it's not a feature of the hardware on most machines.
Side note: are there any architectures which provide hardware stack
randomization? Seems like an unlikely feature to implement, but it
would make sense since it tends to hurt performance to a measurable
degree.
- Dave