[net.unix] Security Is Us

conor@Glacier.ARPA (Conor Rafferty) (08/21/85)

$ ls -l /dev/null
crw-rw----  1 root       3,   2 Aug 20 16:00 /dev/null

[sighted on su-fuji.arpa] 

Don't want no pesky user-writeable security holes on this system...

Conor Rafferty                  conor@su-glacier.arpa
231A Applied Electronics Lab.   conor@su-sierra.arpa
Stanford University Ca.94305	decwrl!glacier!conor
(415)497-1515

stephen@dcl-cs.UUCP (Stephen J. Muir) (08/23/85)

In article <10966@Glacier.ARPA> conor@Glacier.ARPA (Conor Rafferty) writes:
>$ ls -l /dev/null
>crw-rw----  1 root       3,   2 Aug 20 16:00 /dev/null
>
>[sighted on su-fuji.arpa] 
>
>Don't want no pesky user-writeable security holes on this system...

Try doing the same for "/dev/tty" and a lot of inexplicable things will happen.
When this happened on our system, it took me AGES to find the cause.

P.S. It takes me 73 tapes to do a full dump on /dev/null at the moment :-).
-- 
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JANET:	stephen@uk.ac.lancs.comp	|	Department of Computing,
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mcferrin@inuxc.UUCP (P McFerrin) (09/02/85)

> In article <10966@Glacier.ARPA> conor@Glacier.ARPA (Conor Rafferty) writes:
> >$ ls -l /dev/null
> >crw-rw----  1 root       3,   2 Aug 20 16:00 /dev/null
> >
> >[sighted on su-fuji.arpa] 
> >
> >Don't want no pesky user-writeable security holes on this system...
> 
> Try doing the same for "/dev/tty" and a lot of inexplicable things will happen.
> When this happened on our system, it took me AGES to find the cause.
> 
> P.S. It takes me 73 tapes to do a full dump on /dev/null at the moment :-).

You must really have a LARGE bit bucket.  I would try the following
/dev/null compression scheme:
	cat /dev/null | cat >/dev/null
:-)	:-)	:-)	:-)	:-)	:-)	:-)	:-)