Advisory Details

December 15th, 2016

Apple OS X WindowServer _XSetApplicationBindingsForWorkspaces Type Confusion Privilege Escalation Vulnerability

CVE ID	CVE-2016-4638
CVSS SCORE	4.4, AV:L/AC:M/Au:N/C:P/I:P/A:P
AFFECTED VENDORS	Apple
AFFECTED PRODUCTS	OS X
VULNERABILITY DETAILS	This vulnerability allows local attackers to execute arbitrary code on vulnerable installations of Apple OS X. 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 CoreGraphics. By interacting with _XSetApplicationBindingsForWorkspaces, an attacker can cause a type confusion condition. An attacker could leverage this vulnerability to execute arbitrary code under the context of the WindowServer.
ADDITIONAL DETAILS	Apple has issued an update to correct this vulnerability. More details can be found at: https://support.apple.com/en-us/HT206903
DISCLOSURE TIMELINE	2016-05-20 - Vulnerability reported to vendor 2016-12-15 - Coordinated public release of advisory
CREDIT	e048b7039acc9483d42ca9ef197bd909

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