TITLE:
Internet Explorer Window Loading Race Condition Address Bar Spoofing

SECUNIA ADVISORY ID:
SA19521

VERIFY ADVISORY:
http://secunia.com/advisories/19521/

CRITICAL:
Less critical

IMPACT:
Spoofing

WHERE:
>From remote

SOFTWARE:
Microsoft Internet Explorer 6.x
http://secunia.com/product/11/

DESCRIPTION:
Hai Nam Luke has discovered a vulnerability in Internet Explorer,
which can be exploited by malicious people to conduct phishing
attacks.

The vulnerability is caused due to a race condition in the loading of
web content and Macromedia Flash Format files (".swf") in browser
windows. This can be exploited to spoof the address bar in a browser
window showing a Flash file from a malicious web site.

NOTE: The impact of exploitation is reduced because the URL of the
malicious Flash file is visible in the title of the browser window.

The vulnerability has been confirmed on a fully patched system with
Internet Explorer 6.0 and Microsoft Windows XP SP1/SP2. Other
versions may also be affected.

SOLUTION:
Disable Active Scripting support.

PROVIDED AND/OR DISCOVERED BY:
Hai Nam Luke

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