Escape URL in rails
I have a commenting system where people can leave a comment together with their website. Since rails now escapes everything by default I don't really do anything to avoid XSS and it works find - almost. For some reason the URL isn't escaped.
In order to display the username I have a simple helper:
def display_name(name, site)
if !site.blank?
return link_to(name, site)
else
return name
end
end
But if you put something like javascript:alert(1) into the website field it get injecte开发者_C百科d directly into the page - any idea how to escape this?
Even if you escape javascript, malicous users could still create URLs which point to, say, delete urls that could potentially affect a user's data. Why not verify the URL as such when you collect it?
validates :attribute, :url => true
I'd recommend using Thong Kuah's UrlValidator.
精彩评论