Apple OS X IOReportUserClient Out-Of-Bounds Read Information Disclosure Vulnerability
Vulnerability Details
This vulnerability allows local attackers to disclose sensitive information on vulnerable installations of Apple macOS. 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 IOReportUserClient. The process does not properly validate user-supplied data which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities 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/HT207423
Disclosure Timeline
- 2016-09-06 - Vulnerability reported to vendor
- 2017-06-21 - Coordinated public release of advisory
Credit
Qidan He(@flanker_hqd) from KeenLab
