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Re: ld-linux.so security issue?


From: Roland McGrath
Subject: Re: ld-linux.so security issue?
Date: Thu, 9 Aug 2001 15:05:40 -0400 (EDT)

> I've a partition that I would not like users to execute from for various 
> reasons,
> so it's mounted noexec. However this can be trivially bypassed by the user
> doing /lib/ld-linux.so.2 /path/to/binary.

Unless you strictly limit the executables your users can run, there is
always a way to run other code you can read.  If you want to prevent your
users from running arbitrary executables, clear the execute bits on
/lib/ld-linux.so.2; that breaks ldd, but nothing else.



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