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Microsoft Internet Explorer Drag and Drop Vulnerability
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Secunia Advisory:
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SA12321
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Release Date:
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2004-08-19
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Last Update:
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2004-10-12
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Critical:
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Highly 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 5.01
Microsoft Internet Explorer 5.5
Microsoft Internet Explorer 6.x
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| | CVE reference: | CVE-2004-0839 (Secunia mirror)
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Description:
http-equiv has discovered a vulnerability in Microsoft Internet Explorer, which can be exploited by malicious people to compromise a user's system.
The vulnerability is caused due to insufficient validation of drag and drop events issued from the "Internet" zone to local resources. This can be exploited by a malicious website to e.g. plant an arbitrary executable file in a user's startup folder, which will get executed the next time Windows starts up.
http-equiv has posted a PoC (Proof of Concept), which plants a program in the startup directory when a user drags a program masqueraded as an image.
mikx has posted a similar PoC, which plants a program in the startup directory when a user uses the scrollbar.
Andreas Sandblad, Secunia Research, has developed a PoC, which only requires a single click on systems running Windows XP SP1.
This vulnerability is a variant of an issue discovered by Liu Die Yu.
SA9711
The vulnerability has been confirmed on a fully patched system with Internet Explorer 6.0 and Microsoft Windows XP SP1/SP2.
NOTE: The vulnerability is actively being exploited in the wild.
Do you have this product installed on your home computer? Scan using the free Personal Software Inspector. Check if a vulnerable version is installed on computers in your corporate network, using the Network Software Inspector.
Solution:
Microsoft has issued patches (see vendor advisory or SA12806).
Provided and/or discovered by:
Discovered by:
http-equiv
Another PoC provided by:
mikx
Single Click PoC developed by:
Andreas Sandblad, Secunia Research.
Changelog:
2004-08-23: Added link to Microsoft Knowledge Base article. Added another PoC in "Description" section.
2004-08-25: Added link to Internet Storm Center. Vulnerability is reportedly exploited in the wild.
2004-09-03: Secunia Research has developed a PoC, which only requires a single click on system running Windows XP SP1.
2004-09-15: Added link to US-CERT vulnerability note.
2004-10-12: Microsoft issues patch.
Original Advisory:
Microsoft:
http://www.microsoft.com/technet/security/bulletin/ms04-038.mspx
Other References:
SA12806:
http://secunia.com/advisories/12806/
SA9711:
http://secunia.com/advisories/9711/
How to Disable Active Content in Internet Explorer:
http://support.microsoft.com/default.aspx?scid=kb;en-us;q154036
Internet Storm Center:
http://isc.sans.org/diary.php?date=2004-08-24
US-CERT VU#526089:
http://www.kb.cert.org/vuls/id/526089
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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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