Hello, In short:
Browsers can be easily cut from any resources hosted on Content Delivery Networks that use a domain shared between users, by a visit to a malicious site that sets large number of cookies on the common prefix of the CDN domain. For example, an HTML document on 'foo.rackcdn.com' (visited directly or iframed) can set large number of large cookies with a domain attribute set to 'rackcdn.com'. This prevents the browser from accessing any content on '*.rackcdn.com'. A single site can target multiple CDNs at once. More detailed writeup: http://mixedbit.org/blog/2013/04/11/dos_attack_on_cdn_users.html Best regards, Jan _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
