Hi
The solution to this problem was already created.
Read this:
http://symfony.com/doc/2.0/book/installation.html#configuration-and-setup
There you will see how to setup your permissions to avoid sudo chmod...
stuff every time.
--
If you want to report a vulnerability issue on symfony,
This is a common scenario in my case.
The only advice I give you is to avoid working with other user than your
regular user (don't work with the root account)
if not, this will lead such file/dir permission issues.
This is the thing.
When you request a web url, i.e your app one, apache will