Advisory Details

February 1st, 2013

Microsoft Internet Explorer Layout Remote Code Execution Vulnerability

CVE ID	CVE-2012-2548
CVSS SCORE	7.5, AV:N/AC:L/Au:N/C:P/I:P/A:P
AFFECTED VENDORS	Microsoft
AFFECTED PRODUCTS	Internet Explorer 9
TREND MICRO CUSTOMER PROTECTION	Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID ['12584']. 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 CCaret objects. After the CCaret object has been freed there exists a race condition to reclaim the target objects heap buffer before a background thread issues a message to update the screen caret and reuse the stale pointer. An attacker can leverage this vulnerability to execute code under the context of the current process.
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/ms12-063
DISCLOSURE TIMELINE	2012-11-09 - Vulnerability reported to vendor 2013-02-01 - Coordinated public release of advisory
CREDIT	Stephen Fewer of Harmony Security (www.harmonysecurity.com)

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