Advisory Details

November 19th, 2014

Microsoft Internet Explorer CStyleSheet::get_parentStyleSheet Use-After-Free Remote Code Execution Vulnerability

CVE ID	CVE-2014-6341
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 ['16561']. 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 the way Internet Explorer tracks the relationship between two CSS stylesheets when one is imported by the other. The imported stylesheet continues to refer to its parent stylesheet even after the parent stylesheet is no longer valid. 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/ms14-065.aspx
DISCLOSURE TIMELINE	2014-07-24 - Vulnerability reported to vendor 2014-11-19 - Coordinated public release of advisory
CREDIT	s3tm3m

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