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Microsoft Internet Explorer "window()" Arbitrary Code Execution Vulnerability
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Secunia Advisory:
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SA15546
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Release Date:
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2005-05-31
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Last Update:
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2005-12-13
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Popularity:
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135,213 views
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Critical:
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Extremely critical
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Impact:
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System access
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | Microsoft Internet Explorer 5.5
Microsoft Internet Explorer 6.x
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| | CVE reference: | CVE-2005-1790
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Description:
Benjamin Tobias Franz has discovered a vulnerability in Internet Explorer, which can be exploited by malicious people to compromise a user's system.
The vulnerability is caused due to certain objects not being initialized correctly when the "window()" function is used in conjunction with the "<body onload>" event. This can be exploited to execute arbitrary code on a vulnerable browser via some specially crafted JavaScript code called directly when a site has been loaded.
Example:
<body onload="window();">
Successful exploitation requires that the user is e.g. tricked into visiting a malicious website.
The vulnerability has been confirmed on a fully patched system with Internet Explorer 6.0 and Microsoft Windows XP SP2, and Internet Explorer 6.0 and Microsoft Windows 2000 SP4.
Note: A PoC exploit has been released for this vulnerability.
Solution:
Apply patches.
For details:
SA15368
Provided and/or discovered by:
Originally reported by:
Benjamin Tobias Franz
Code Execution PoC by:
S. Pearson, Computer Terrorism (UK)
Changelog:
2005-06-01: Added Microsoft Internet Explorer 5.5 as affected software.
2005-06-02: Added CVE reference.
2005-11-21: PoC exploit released. Escalated criticality.
2005-11-22: Added links to original advisories and US-CERT vulnerability note.
2005-12-13: Vendor releases patches. Updated solution.
Original Advisory:
S. Pearson:
http://www.computerterrorism.com/research/ie/ct21-11-2005
Microsoft (KB911302):
http://www.microsoft.com/technet/security/advisory/911302.mspx
http://support.microsoft.com/kb/911302
MS05-054 (KB905915):
http://www.microsoft.com/technet/security/Bulletin/MS05-054.mspx
Other References:
US-CERT VU#887861:
http://www.kb.cert.org/vuls/id/887861
SA15368:
http://secunia.com/advisories/15368/
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About this Secunia Advisory
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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.
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