Advisory Details

May 10th, 2016

(Pwn2Own) Microsoft Windows win32kfull.sys Surface Object Use-After-Free Privilege Escalation Vulnerability

CVE ID	CVE-2016-0173
CVSS SCORE	6.6, AV:L/AC:M/Au:S/C:C/I:C/A:C
AFFECTED VENDORS	Microsoft
AFFECTED PRODUCTS	Windows
TREND MICRO CUSTOMER PROTECTION	Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID ['24543']. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
VULNERABILITY DETAILS	This vulnerability allows local attackers to execute arbitrary code on vulnerable installations of Microsoft Windows. 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 how win32kfull.sys handles reference counting of Surface objects. An attacker can leverage this vulnerability to escalate privileges and execute code with kernel privileges.
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/ms16-062.aspx
DISCLOSURE TIMELINE	2016-03-12 - Vulnerability reported to vendor 2016-05-10 - Coordinated public release of advisory
CREDIT	360Vulcan

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