Advisory Details

November 8th, 2016

Microsoft Windows NtUserMagSetContextInformation Kernel State Corruption Privilege Escalation Vulnerability

CVE ID	CVE-2016-7246
CVSS SCORE	6.9, AV:L/AC:M/Au:N/C:C/I:C/A:C
AFFECTED VENDORS	Microsoft
AFFECTED PRODUCTS	Windows
VULNERABILITY DETAILS	This vulnerability allows local attackers to escalate privileges on vulnerable installations of Microsoft Windows. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the handling of the NtUserMagSetContextInformation system call. By supplying specific arguments, an attacker can cause corruption of kernel state. An attacker can leverage this vulnerability to execute arbitrary code under the context of SYSTEM.
ADDITIONAL DETAILS	Microsoft has issued an update to correct this vulnerability. More details can be found at: https://technet.microsoft.com/library/security/MS16-135
DISCLOSURE TIMELINE	2016-09-16 - Vulnerability reported to vendor 2016-11-08 - Coordinated public release of advisory
CREDIT	Anonymous

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