[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Full-disclosure] Exploiting buffer overflows via protected GCC
- To: ArcSighter Elite <arcsighter@xxxxxxxxx>
- Subject: Re: [Full-disclosure] Exploiting buffer overflows via protected GCC
- From: Marcus Meissner <meissner@xxxxxxx>
- Date: Mon, 16 Feb 2009 15:06:21 +0100
On Mon, Feb 16, 2009 at 09:00:33AM -0500, ArcSighter Elite wrote:
> James Matthews wrote:
> > I would recommend doing the following things.
> >
> > 1. Ask on the Ubuntu GCC list what protection is implemented. (Or just look
> > at the source)
> > 2. Use GCC to see where the execution is being redirected and so you can
> > have a better visual of whats going on.
> > 3. Are you sure the stack is executable?
_fortify_fail is caused by the light weight buffer overflow checking,
enabled by the -D_FORTIFY_SOURCE=2 compile time flag.
Ciao, Marcus
_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/