IE Vulnerability: Address Bar Spoofing

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 web content from a malicious web site.

Secunia has constructed a test, which can be used to check if your browser is affected by this issue:
http://secunia.com/Internet_Explorer_Address_Bar_Spoofing_Vulnerability_Test/

The vulnerability has been confirmed on a fully patched system with Internet Explorer 6.0 and Microsoft Windows XP SP1/SP2. The vulnerability has also been confirmed in Internet Explorer 7 Beta 2 Preview (March edition).

Other versions may also be affected.

Please note, there is no fix for this vulnerability from Microsoft at the moment. Secunia advises to Disable Active Scripting support.