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TITLE:
Mozilla Firefox IDN Spoofing Security Issue

SECUNIA ADVISORY ID:
SA34096

VERIFY ADVISORY:
http://secunia.com/advisories/34096/

DESCRIPTION:
A security issue has been discovered in Mozilla Firefox, which can be
exploited by a malicious people to conduct spoofing attacks.

The problem is caused due to the handling of IDN (International
Domain Name) support, which can be exploited to spoof a URL via e.g.
a ".cn" domain containing certain international characters that
resemble other commonly used characters (e.g. "/") in the sub-domain
part.

This is related to:
SA14163

The security issue is confirmed in version 3.0.6. Other versions may
also be affected.

SOLUTION:
Disable IDN support in "about:config".

PROVIDED AND/OR DISCOVERED BY:
Additional vector provided by Moxie Marlinspike.

ORIGINAL ADVISORY:
https://www.blackhat.com/presentations/bh-dc-09/Marlinspike/BlackHat-DC-09-Marlinspike-Defeating-SSL.pdf

OTHER REFERENCES:
SA14163:
http://secunia.com/advisories/14163/

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