Advisory Details

October 15th, 2011

Microsoft Internet Explorer swapNode Handling Remote Code Execution Vulnerability

CVE ID	CVE-2011-2000
CVSS SCORE	7.5, AV:N/AC:L/Au:N/C:P/I:P/A:P
AFFECTED VENDORS	Microsoft
AFFECTED PRODUCTS	Internet Explorer
TREND MICRO CUSTOMER PROTECTION	Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID ['11760']. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
VULNERABILITY DETAILS	This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Internet Explorer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the way Internet Explorer handles calls to the method swapNode(). When a call to swapNode is issued on an node within a document that has two body nodes, Internet Explorer frees an attribute field for one of the body nodes and then later re-uses the freed field during the node swap. This behavior could result in remote code execution under the context of the current user.
ADDITIONAL DETAILS	Microsoft has issued an update to correct this vulnerability. More details can be found at: http://technet.microsoft.com/en-us/security/bulletin/ms11-081
DISCLOSURE TIMELINE	2011-07-20 - Vulnerability reported to vendor 2011-10-15 - Coordinated public release of advisory
CREDIT	Sebastian Apelt (www.siberas.de)

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