On Wed, Dec 04, 2013 at 05:11:16PM -0600, Ian Pilcher wrote:
> On 12/04/2013 04:56 PM, Brendan Jones wrote:
> > Patching is not a problem. Unnecessary is the question. Explain to me
> > (not you in particular Rahul) how these printf's can possibly be exploited?
>
> char *output;
>
> output = get_user_input(...);
> printf(output);
>
> What happens when the user enters %n?
With -D_FORTIFY_SOURCE=2 the program is aborted, unless the string resides
in read-only memory ;)
Jakub
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