W3C home > Mailing lists > Public > public-html-commits@w3.org > December 2010

html5/spec Overview.html,1.4577,1.4578

From: Ian Hickson via cvs-syncmail <cvsmail@w3.org>
Date: Wed, 08 Dec 2010 00:52:08 +0000
To: public-html-commits@w3.org
Message-Id: <E1PQ8GO-0003Mz-7w@lionel-hutz.w3.org>
Update of /sources/public/html5/spec
In directory hutz:/tmp/cvs-serv12939

Modified Files:
	Overview.html 
Log Message:
note advice from an anonymous IANA reviewer (whatwg r5713)

Index: Overview.html
===================================================================
RCS file: /sources/public/html5/spec/Overview.html,v
retrieving revision 1.4577
retrieving revision 1.4578
diff -u -d -r1.4577 -r1.4578
--- Overview.html	8 Dec 2010 00:28:00 -0000	1.4577
+++ Overview.html	8 Dec 2010 00:52:03 -0000	1.4578
@@ -67215,6 +67215,15 @@
     as <code><a href="#text-html-sandboxed">text/html-sandboxed</a></code> as regular
     <code><a href="#text-html">text/html</a></code> files, authors should avoid using the <code title="">.html</code> or <code title="">.htm</code> extensions for
     resources labeled as <code><a href="#text-html-sandboxed">text/html-sandboxed</a></code>.</p>
+    <p>Furthermore, since the <code><a href="#text-html-sandboxed">text/html-sandboxed</a></code> MIME
+    type impacts the origin security model, authors should be careful
+    to prevent tampering with the MIME type labeling mechanism itself
+    when documents are labeled as <code><a href="#text-html-sandboxed">text/html-sandboxed</a></code>. If
+    an attacker can cause a file to be served as
+    <code><a href="#text-html">text/html</a></code> instead of
+    <code><a href="#text-html-sandboxed">text/html-sandboxed</a></code>, then the sandboxing will not
+    take effect and a cross-site scripting attack will become
+    possible.</p>
     <p>Beyond this, the type is identical to <code><a href="#text-html">text/html</a></code>,
     and the same considerations apply.</p>
    </dd>
Received on Wednesday, 8 December 2010 00:52:10 GMT

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