Advisory Details

September 16th, 2014

Microsoft Internet Explorer Empty CAttrValue Uninitialized Variable Remote Code Execution Vulnerability

CVE ID	CVE-2014-4096
CVSS SCORE	6.8, AV:N/AC:M/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 ['16257']. 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 vulnerability relates to how Internet Explorer handles style attributes which have been set to a value and then emptied. By emptying a style attribute and then performing specific manipulations on the document, an attacker can cause Internet Explorer to read from a memory location which has not been initialized. 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: https://technet.microsoft.com/en-us/library/security/MS14-052
DISCLOSURE TIMELINE	2014-05-28 - Vulnerability reported to vendor 2014-09-16 - Coordinated public release of advisory
CREDIT	cloudfuzzer

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