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SubjectRe: Conditional SymLinks
On Tue, 16 Dec 1997, Pavel Machek wrote:

> > About in.telnetd I don't know much, except that it's
> > environment isn't inherited from the telnet client
> > program, which can't write in /etc/tmp...
>
> Well, environment is passed using special protocal. How much of it is
> used depends on in.telned version. Look:
>
[proof of Pavel's (correct) theory]
>
> And what about suid programs?
>
> TMP=/etc ping localhost?
>
> Ok, ping will not use $TMP, but X for sure will?
>
> No, no, this is not secure.

OTOH, do you know of any setuid programs that behave so
badly that they are a security hole?

Rik.
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