月度归档:2016年06月

Integer overflow due to compile behavior in OSX Kernel IOUSBHIDDevice

Interesting Integer overflow in enum comparison IOHIDDevice::handleReportWithTime

By flanker from KeenLab.

There exists a signed integer comparison overflow in IOHIDDevice::_getReport and then handleReportWithTime, which can lead to oob access/execute in handleReportWithTime. A normal process can leverage this vulnerability to archive potential code execution in kernel and escalate privilege.

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