On Tue, Apr 07, 2020 at 09:51:15AM -0600, Theo de Raadt wrote:
> Stefan Sperling <s...@stsp.name> wrote:
> 
> > On Tue, Apr 07, 2020 at 09:37:02AM -0600, Theo de Raadt wrote:
> > > > The idea was to have /var/www/tmp created by default, but with
> > > > www:www ownership.
> >  
> > > Create the directory.  Now as a user, completely fill it.
> > 
> > The proposal is to create tmp with www:www ownership, writable only for
> > that user, not like the old /var/tmp which was writable by anyone.
> 
> That's not true; the diff created it mode 1777.

Ah, I missed that. Yes that would be a problem in the diff.

> A smaller secondary concern is if you can convince software using this space,
> from remote, to hog the space too much, and/or lose track of files in there.
> Which would also create the fallout problems of "/var is full".
> 
> It's a matter of how other /var-using software misbehaves or fails in
> those circumstances.  These concerns have been ignored too long.

Yes, absolutely correct. Logs or tempfiles filling up /var are a problem,
and in the gotweb application Tracey and I created it is indeed possible
for requests to trigger large tempfiles. We need to look at that and come
up with a better solution.
We could check whether httpd/slowcgi could help with this somehow and try
to come up with something that works for any application and not just ours.

Reply via email to