Advisory Details

November 2nd, 2016

Apple OS X AppleSMC smcHandleYPCEvent Privilege Escalation Vulnerability

CVE ID	CVE-2016-4678
CVSS SCORE	6.9, AV:L/AC:M/Au:N/C:C/I:C/A:C
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. 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 AppleSMC's smcHandleYPCEvent. The process does not properly validate the existence of an object prior to performing operations on it. An attacker can leverage this vulnerability to escalate privileges under the context of the kernel.
ADDITIONAL DETAILS	Apple has issued an update to correct this vulnerability. More details can be found at: https://support.apple.com/en-us/HT201222
DISCLOSURE TIMELINE	2016-08-23 - Vulnerability reported to vendor 2016-11-02 - Coordinated public release of advisory
CREDIT	daybreaker@Minionz

BACK TO ADVISORIES