[scponly] Is it dangerous if user can write to home if chrooted and if yes could oplease anybody tell why?

[Peter Holm]

Hi,

I read in sources of scponly that it is not a good thing to have user
be able to write to his home if it is a chrooted installation.
Simething about .ssh is written there.

Could please anybody explain this? Why is it not good to have user
write to hie home? is it just the .ssh file? What could happen then?

If the file is ownedby root but readable, not writable for user, is it
ok then? 

Or are there more dangers with writable user dirs?

Thanks for your attention!

Peter