As I said on Irc, I'm willing to bet they got in via Joomla, as the site's portal didn't look like it was updated in ages, they might have exploited an old bug.
While It is indeed a shame that such a thing happened, I think this teaches us a lesson in the importance of having all the software properly updated. While I do not know for a fact that it was indeed hacked via Joomla, I stand by my theory, as both http://blog.fedora-ve.org, and http://wiki.fedora-ve.org still stand.
Keep us updated!
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Ing. Juan M. Rodriguez Moreno
Desarrollador de Sistemas Abiertos
Sitio: http://proyectofedora.org/mexico