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Message-ID: <20150724160148.GB16376@brightrain.aerifal.cx>
Date: Fri, 24 Jul 2015 12:01:48 -0400
From: Rich Felker <dalias@...c.org>
To: musl@...ts.openwall.com
Subject: Re: [PATCH] fix atexit when it is called from an atexit
handler
On Fri, Jul 24, 2015 at 08:52:23AM +0200, Jens Gustedt wrote:
> > not an input dependent dos attack surface.
>
> I am not an expert in these, but AFAIR all function pointers that are
> stored in predictable places are attack surfaces.
This is a valid position, but I would distinguish interface-level
attack surfaces, in the form of interfaces that are processing
attacker-controlled data, from secondary attack surfaces that are only
accessible once you have already exploited a bug that yields undefined
behavior. These function pointers are the latter.
Rich
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