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Another ld-linux.so problem


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X-RDate: Mon, 09 Feb 1998 11:26:04 +0500 (ESK)
Date: Sun, 8 Feb 1998 15:39:10 -0600
From: Aleph One <[email protected]>
To: [email protected]
Subject: Re: Another ld-linux.so problem

On Sat, 7 Feb 1998 [email protected] wrote:

> Yes. SOCKSifying stupid protocols that require binding ports <1024, for
> example. Assuming you install libsocks5_sh.so in /usr/lib, you can do:
>
> $ (export LD_PRELOAD=/usr/lib/libsocks5_sh.so; rsh machine.outside.firewall
> pwd)
>
> and have it work. This is basically what the runsocks script does.

Another example: installing a library that overides mktemp, tempnam and
other dangerous library functions with more secure ones. So the feature
is indeed useful. The correct behavior should be for the dynamic linker
to give up at the first error. Alternatively you should be able to
configure such libraries via the configuration file instead of an
environment variable. You cant do so now as far as I can tell.

> --
> Carson Gaspar -- [email protected] [email protected] [email protected]
> http://www.cs.columbia.edu/~carson/home.html
> Queen Trapped in a Butch Body
>

Aleph One / [email protected]
http://underground.org/
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