Bugtraq mailing list archives

Re: GCC 2.7.? /tmp files


From: perry () piermont com (Perry E. Metzger)
Date: Sun, 18 Jan 1998 21:18:44 -0500


Theo de Raadt writes:
In OpenBSD we have fixed hundreds of these /tmp races.  I do not
believe there is a simple answer.

I believe there is.

General publically writable /tmp directories are bad. Systems should
move towards using /tmp/${USER}/ directories on a per-user basis, with
these directories being only touchable by the user. These would cut,
in a gordion knot fashion, literally hundreds of exploits that have
shown up in dozens of places.

I believe, btw, that a similar general fix might help out the
spate of /var/mail security problems.

Perry



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