[ Ivan Voras <ivoras@[...].hr>  ]

>  Sebastian 'lunar' Wiesner wrote:
> > Carsten Haese <carsten@[...].com> typed
>  
> >> I don't think that that has anything to do with Linux or not. The
> >> script is not the actual executable, hence its suid bit is
> >> irrelevant.
> > 
> > I don't think so. From what I know, the script is passed as
> > executable to the kernel loader, which interprets the shebang and
> > feeds the script through the correct interpreter. So the kernel
> > loader sees the script itself as executable instead of the
> > interpreter binary. I've heard of other Unix systems, which handle
> > this differently (meaning that the SUID bit on scripts has an
> > effect), but I may be wrong.
>  
>  Yes, the kernel parses #! but the suid-ness is still controlled by the
>  target interpreter (i.e. python executable). At least BSD systems also
>  behave this way.

I don't think, that the interpreter controls SUID-ness. Privileges are
always handled by the kernel. At least the kernel needs to agree, when
a normal user wants to execute a SUID scripts.

-- 
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                                      (Rosa Luxemburg)
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