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LD_PRELOAD and suid?

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jabol
Apprentice

Apprentice

Joined: 05 Oct 2005
Posts: 269

Posted: Fri Aug 17, 2007 10:13 pm Post subject: LD_PRELOAD and suid?

I suppose it does not work together, does it? (just want to be sure). Any other ways of disabling (or exploiting) it?

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Irom
Tux's lil' helper

Tux's lil' helper

Joined: 07 Oct 2003
Posts: 95
Location: am arsch..

Posted: Sun Aug 19, 2007 6:40 pm Post subject:

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No it doesn't. This is documented in "man ld.so":

man ld.so wrote:

LD_PRELOAD
A whitespace-separated list of additional, user-specified, ELF shared
libraries to be loaded before all others. This can be used to selec-
tively override functions in other shared libraries. For set-user-
ID/set-group-ID ELF binaries, only libraries in the standard search
directories that are also set-user-ID will be loaded.

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