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Message-Id: <201012162255.37008.timb@nth-dimension.org.uk>
Date: Thu, 16 Dec 2010 22:55:36 +0000
From: Tim Brown <timb@...-dimension.org.uk>
To: oss-security@...ts.openwall.com
Cc: Ralf Wildenhues <Ralf.Wildenhues@....de>
Subject: Re: Re: Breaking the links: Exploiting the linker
On Thursday 16 December 2010 17:00:57 Ralf Wildenhues wrote:
> Hello Tim, all,
>
> Tim Brown <timb@...> writes:
> > In the interests of a thorough peer review I'd be curious what people
> > think of the following paper I've been working on Linux and POSIX
> > linkers:
> >
> > http://www.nth-dimension.org.uk/downloads.php?id=77
>
> Replacing
> LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/dir/name
>
> with
> LD_LIBRARY_PATH=${LD_LIBRARY_PATH:-/dir/name}
>
> changes semantics in a way that are not generally desirable: if I want to
> append a directory to the search path, then the latter is not the way to
> do it (because it doesn't change the path if the variable is already set).
> Rather, I think you meant
> LD_LIBRARY_PATH=${LD_LIBRARY_PATH:-$LD_LIBRARY_PATH:}/dir/name
Actually, I think Tomas' has the correct suggestion although yes, the line in
the paper is incorrect.
> On page 5, the footnotes have several markup errors resulting in weird PDF
> output.
>
> I suggest using the url package for nicer URL typesetting (in case you're
> writing this with LaTeX) and the hyperref package with
> \hypersetup{pdfborder={0 0 0}} for decent clickable links.
Great, LaTeX tips are always helpful.
Tim
--
Tim Brown
<mailto:timb@...-dimension.org.uk>
<http://www.nth-dimension.org.uk/>
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