Apple OS X DspFuncLib Use-After-Free Privilege Escalation Vulnerability
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 open a malicious file.
The specific flaw exists within the DspFuncLib extension. The issue lies in the failure to properly handle error conditions leading to a dangling pointer being reused after it has been freed. An attacker can leverage this vulnerability to raise privileges and execute code under the context of root.
Additional Details
Apple has issued an update to correct this vulnerability. More details can be found at:
https://support.apple.com/HT206903
Disclosure Timeline
- 2016-04-01 - Vulnerability reported to vendor
- 2016-08-29 - Coordinated public release of advisory
Credit
Jack Tang and Moony Li of Trend Micro
