full-disclosure - Re: DLL hijacking on Linux

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Message-ID: <20100825222151.C6C.0@argo.troja.mff.cuni.cz>
Date: Wed, 25 Aug 2010 22:37:39 +0200 (MET DST)
From: Pavel Kankovsky <peak@...o.troja.mff.cuni.cz>
To: Tim Brown <timb@...-dimension.org.uk>
Cc: full-disclosure@...ts.grok.org.uk, bugtraq@...urityfocus.com
Subject: Re: DLL hijacking on Linux

On Wed, 25 Aug 2010, Tim Brown wrote:

> the key point is that an empty directory specification statement in
> LD_LIBRARY_PATH, PATH (and probably others) is equivalent to $CWD.

And there is also the infamous DT_RPATH (and DT_RUNPATH) that makes it
possible to hardwire unsafe paths into executable files themselves.
This happens quite often and I find it very disturbing.

-- 
Pavel Kankovsky aka Peak                          / Jeremiah 9:21        \
"For death is come up into our MS Windows(tm)..." \ 21st century edition /

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