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Internet Explorer Page Loading Race Condition and URL Spoofing Advisory Available in Danish  Advisory Available in German 

Secunia Advisory: SA25564  
Release Date: 2007-06-06
Last Update: 2007-06-11

Critical:
Less critical
Impact: Security Bypass
Spoofing
Where: From remote
Solution Status: Unpatched

Software:Microsoft Internet Explorer 6.x
Microsoft Internet Explorer 7.x

CVE reference:CVE-2007-3091 (Secunia mirror)

This advisory is currently marked as unpatched!
- Companies can be alerted when a patch is released!


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:
Do not browse untrusted websites.

Provided and/or discovered by:
Michal Zalewski

Changelog:
2007-06-11: Added CVE reference.

Original Advisory:
http://lists.grok.org.uk/pipermail/full-disclosure/2007-June/063712.html

Other References:
US-CERT VU#471361:
http://www.kb.cert.org/vuls/id/471361



Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.

Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.

143 Related Secunia Security Advisories, displaying 10

1. Internet Explorer MHTML Protocol Handler Cross-Domain Information Disclosure
2. Internet Explorer Multiple Vulnerabilities
3. Internet Explorer 6 Window "location" Handling Vulnerability
4. Internet Explorer 7 Frame Location Handling Vulnerability
5. Internet Explorer "substringData()" Memory Corruption Vulnerability
6. Internet Explorer "DisableCachingOfSSLPages" Weakness
7. Internet Explorer "Print Table of Links" Cross-Zone Scripting
8. Internet Explorer HTTP Request Smuggling/Splitting Vulnerabilities
9. Internet Explorer FTP Command Injection Vulnerability
10. Microsoft Internet Explorer Multiple Vulnerabilities

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