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Vulnerability Development: Re: stackguard-like embedded protection

Re: stackguard-like embedded protection

From: Greg KH <greg_at_WIREX.COM>
Date: Tue, 5 Sep 2000 21:57:27 -0700

On Tue, Sep 05, 2000 at 05:09:20PM +0200, typo_at_INFERNO.TUSCULUM.EDU wrote:
>
> where's the need for research? i've made glibc rpms without %n the day
> the first format bugs went to bugtraq, and had them installed on all of my
> [linux] machines since then...

That doesn't solve much, as there are a bunch of programs out there that
actually _use_ the '%n' modifier legitimately. Once the format bugs came
out, I did a scan of all of the source code on a RedHat box. There are
more programs that use '%n' than I expected. I can dig up the list if
people want.

So a "real" solution can't just ignore the C Standard. And just
removing '%n' isn't a "real" solution.

greg k-h

--
greg@(kroah|wirex).com
Received on Sep 06 2000
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