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Internet Explorer Page Loading Race Condition and URL Spoofing

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Release Date:  2007-06-06    Last Update:  2009-06-10    Views:  23,031

Secunia Advisory SA25564

Where:

From remote

Impact:

Security Bypass, Spoofing

Solution Status:

Vendor Patch

CVE Reference(s):

Description


Michal Zalewski has reported two vulnerabilities in Internet Explorer, which potentially can be exploited by a malicious website to display a fake URL in the address bar or to bypass certain security restrictions.

1) A race condition when navigating to a new site from a page can be exploited to perform certain actions and access the contents of the newly loaded page with the permissions of the old page.

2) An error within the handling of "location" DOM objects can be exploited to spoof the URL address bar.

Note: This issue reportedly does not affect Internet Explorer 7.


Solution:
Apply patches.

Further details available to Secunia VIM customers

Provided and/or discovered by:
Michal Zalewski

Original Advisory:
Microsoft (KB969897):
http://www.microsoft.com/technet/security/Bulletin/MS09-019.mspx

Michal Zalewski
http://archives.neohapsis.com/archives/fulldisclosure/2007-06/0026.html
http://lcamtuf.coredump.cx/ierace/

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Internet Explorer Page Loading Race Condition and URL Spoofing

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