- From: Adam Barth <w3c@adambarth.com>
- Date: Fri, 11 Jan 2013 01:18:08 -0800
- To: Yoav Weiss <yoav@yoav.ws>
- Cc: Boris Zbarsky <bzbarsky@mit.edu>, "public-webappsec@w3.org" <public-webappsec@w3.org>
Keep in mind that an attacker who can inject an <img> tag into your site can use a data URL to display whatever image he or she likes. Adding data: as a src does increase the risk from an XSS attack. Adam On Thu, Jan 10, 2013 at 7:33 AM, Yoav Weiss <yoav@yoav.ws> wrote: > OK, my mistake. > In that case, I understand that enabling "img-src data:" in CSP can be > recommended as part of a Web performance best practice. > > > On Thu, Jan 10, 2013 at 4:02 PM, Boris Zbarsky <bzbarsky@mit.edu> wrote: >> >> On 1/10/13 9:44 AM, Yoav Weiss wrote: >>> >>> It seems that at least in some browsers, img data URIs are XSS >>> exploitable[1][2]. >> >> >> Uh.... no. They're not. What made you think they are, exactly? The >> links you point to certainly say nothing of the sort. >> >> -Boris >> >
Received on Friday, 11 January 2013 09:19:08 UTC