Advisory Details

September 20th, 2016

Apple OS X AudioAUUC Integer Overflow Privilege Escalation Vulnerability

ZDI-16-519
ZDI-CAN-3716

CVE ID CVE-2016-4699
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. 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 the handling of the AudioAUUC kernel extension. The issue lies in the failure to check for an integer overflow condition when allocating a buffer. An attacker can leverage this vulnerability to execute code within 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/HT207170
DISCLOSURE TIMELINE
  • 2016-04-26 - Vulnerability reported to vendor
  • 2016-09-20 - Coordinated public release of advisory
CREDIT Jack Tang of Trend Micro (@jacktang310)
Moony Li of Trend Micro
BACK TO ADVISORIES