Advisory Details

September 16th, 2016

Microsoft Edge TextNode Use-After-Free Remote Code Execution Vulnerability

CVE ID	CVE-2016-3294
CVSS SCORE	6.8, AV:N/AC:M/Au:N/C:P/I:P/A:P
AFFECTED VENDORS	Microsoft
AFFECTED PRODUCTS	Edge
TREND MICRO CUSTOMER PROTECTION	Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID ['24751']. 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 Edge. 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 relates to how Edge handles text nodes within HTML documents. By manipulating a document's elements an attacker can force a Tree::TextNode object in memory to be reused as a Tree::ANode object after it has already been freed. 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/library/security/MS16-105
DISCLOSURE TIMELINE	2016-05-23 - Vulnerability reported to vendor 2016-09-16 - Coordinated public release of advisory
CREDIT	Shi Ji (@Puzzor) of VARAS@IIE

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