Mozilla engineer Matt Wobensmith discovered that when the getUserMedia permission dialog for an iframe appears in one domain, it will display its origin as that of the top-level document and not the calling framed page. This could lead to users incorrectly giving camera or microphone permissions when confusing the requesting page's location for a hosting one's.


External Reference:

http://www.mozilla.org/security/announce/2013/mfsa2013-60.html


Acknowledgements:

Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Matt Wobensmith as the original reporter.

Statement:

This issue does not affect the version of firefox and thunderbird as shipped with Red Hat Enterprise Linux 5 and 6