By combining two exploits initially developed for jailbreaking iPhones, security researchers claim they can also jailbreak Macs and MacBook devices that include Apple’s latest line of T2 security chips, reports ZDNet.
If exploited correctly, this jailbreaking technique allows users/attackers to gain full control over devices to modify core OS behavior or be used to retrieve sensitive or encrypted data, and even plant malware, the article adds.
“If you suspect your system to be tampered with, use Apple Configurator to reinstall bridgeOS on your T2 chip described here. If you are a potential target of state actors, verify your SMC payload integrity using .e.g. rickmark/smcutil and don’t leave your device unsupervised,” security firm ironPeak told ZDNet.
The Apple T2 Security Chip is Apple’s second-generation, custom silicon for Mac. By redesigning and integrating several controllers found in other Mac computers—such as the System Management Controller, image signal processor, audio controller, and SSD controller—the T2 chip delivers new capabilities to your Mac.
Apple says that, for example, the T2 chip enables a new level of security by including a secure enclave coprocessor that secures Touch ID data and provides the foundation for new encrypted storage and secure boot capabilities. And the T2 chip’s image signal processor works with the FaceTime HD camera to enable enhanced tone mapping, improved exposure control, and face-detection–based autoexposure and auto white balance.”
You can use System Information to learn whether your Mac has this chip:
Press and hold the Option key while choosing Apple () menu > System Information.
In the sidebar, select either Controller or iBridge, depending on the version of macOS in use.
If you see “Apple T2 chip” on the right, your Mac has the Apple T2 Security Chip.
