[Dailydave] Dangling pointers exploitation

[Thomas Ptacek]

Unitialized automatic variables and use-after-free variables seem
of-a-kind: you have a pointer who's value seems unpredictable but is
in fact strongly influenced by the execution environment which is in
turn often influenced by inputs and timing.

On 7/25/07, jf <jf at danglingpointers.net> wrote:
> > Let me just qualify that I was talking about the whole class of
> > wild-pointer bugs.
>
> how would it be any different than
> ptr+overflowed_offset/array[negative_index]/et cetera bugs?
>
> perhaps the guys found a new way of reliably exploiting a very specific
> form of dangling pointer bugs, but i dont see how it could possibly
> qualify as being a new class of vulns, nor can i think of anyone who has
> ever said a dangling pointer was a QA issue and not a security issue
>


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Thomas H. Ptacek // matasano security
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