I'm looking at page 162 in *Agile Web Development with Rails* and in
there they do the following once they find that a user has logged in
with the right name and password:
- - -
def login
if request.post?
user = User.authenticate(params[:username], params[:password])
if user
session[:user_id] = user.id
redirect_to(:action => "index")
else
flash.now[:notice] = "Invalid user/password combination"
end
end
end
- - -
The line that concerns me is
session[:user_id] = user.id
The authors write
#########
The logni action will need to record something in session to say that an
administrator is logged in. Let's have it store the id of their User
object using the hey user.id. The login code looks like this:
#########
Given that the session data is likely to be stored in cookies, and given
that user.id is likely to be a relatively small number (less than a
million) ... how secure is this as a flag to indicate that someone is an
authorized user of a store??? Couldn't an unauthorized user create the
session[:user_id] = user.id and then get access?
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