- From: James French <jfrench@denirostaff.com>
- Date: Wed, 25 Jul 2012 22:42:13 +0000
- To: Phillip Hallam-Baker <hallam@gmail.com>
- Cc: "ietf-http-wg@w3.org Group" <ietf-http-wg@w3.org>
It occurs to me that a man-in-the-middle could change a Content-Type header to trick a web service into a delivering scripted data. 1.) MITM uploads script.jpg to https2://legit-host/script.jpg 2.) Client requests /script.jpg from legit-host 3.) legit-host signs and delivers script.jpg with a Content-Type of: image/jpg 4.) MITM changes Content-Type header from image/jpg to text/html 5.) Client runs script.jpg with the permissions level of a script running on legit-host It's unlikely that this scenario would come up in practice, but it does exist as a hypothetical vector. On Wed, Jul 25, 2012 at 9:59 AM, Phillip Hallam-Baker <hallam@gmail.com> wrote: > > > 3) HTTP security controls should only secure content. Signing headers > is not only difficult, it is often counterproductive. If a Web service > depends on information in a header there is probably something wrong >
Received on Thursday, 26 July 2012 08:49:19 UTC