[tex-live] TeXLive Online Service?

Frank Küster frank at kuesterei.ch
Thu Jan 31 23:00:13 CET 2008

Patrice Dumas <pertusus at free.fr> wrote:

> On Thu, Jan 31, 2008 at 08:53:10AM +0100, Werner LEMBERG wrote:
>> Folks,
>> does someone offers a `TeXLive Online Service'?
>> I don't know whether this is the right name, but the idea is that you
>> submit a .tex file, and you receive a .pdf file, and TeXLive is used
>> for processing.
>> Is such a service available at all, with or without TeXLive?  A quick
>> search with google doesn't bring up anything.
> I would personally be very worried about security implications of this
> setup. 

I'd be worried, too. There are many details in a standard TeX setup, as
well as deep in the bowels of our code, which were never designed for
such a situation. 

> Isn't it possible to run any command when processing a document?

It's probably possible to exclude this possibility quite well, as Zdenek
pointed out. But the first attack which I would try would be to fill up
the /var partition by generating lots of useless fonts. Next, after some
reading, I'd try to generate a file outside the /var/cache hierarchy by
finding some loophole in kpathsea which no one ever cared to check for...

Regards, Frank
Frank Küster
Debian Developer (teTeX/TeXLive)

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