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Category:   Application (Web Browser)  >   Microsoft Internet Explorer (IE) Vendors:   Microsoft
Microsoft Internet Explorer Multiple Use-After-Free Bugs Let Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1027555
SecurityTracker URL:  http://securitytracker.com/id/1027555
CVE Reference:   CVE-2012-1529, CVE-2012-2546, CVE-2012-2548, CVE-2012-2557   (Links to External Site)
Date:  Sep 21 2012
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 6, 7, 8, 9
Description:   Several vulnerabilities were reported in Microsoft Internet Explorer. A remote user can cause arbitrary code to be executed on the target user's system.

A remote user can create a specially crafted HTML that, when loaded by the target user, will trigger a use-after-free flaw and execute arbitrary code on the target system. The code will run with the privileges of the target user.

The onMove() method is affected [CVE-2012-1529]. An anonymous researcher (via VeriSign iDefense Labs) reported this vulnerability.

An Event Listener is affected [CVE-2012-2546]. Rosario Valotta reported this vulnerability.

A Layout object is affected [CVE-2012-2548]. Stephen Fewer of Harmony Security (via TippingPoint's Zero Day Initiative) reported this vulnerability.

The cloneNode() method is affected [CVE-2012-2557]. An anonymous researcher (via TippingPoint's Zero Day Initiative) reported this vulnerability.

Internet 10 is not affected by these vulnerabilities.

Impact:   A remote user can create HTML that, when loaded by the target user, will execute arbitrary code on the target user's system.
Solution:   The vendor has issued fixes.

A patch matrix is available in the vendor's advisory.

A restart is required.

The Microsoft advisory is available at:

http://technet.microsoft.com/en-us/security/bulletin/ms12-063

Vendor URL:  technet.microsoft.com/en-us/security/bulletin/ms12-063 (Links to External Site)
Cause:   Access control error
Underlying OS:   Windows (Any)

Message History:   None.


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