Mac M1 suffering from a defect impossible to correct!


MIT researchers discovered a flaw in a security system built directly into Apple’s M1 processor. Without posing an immediate risk, it is quite serious because it cannot be corrected with a software update.

You will also be interested

[EN VIDÉO] Cyber ​​espionage: what are the threats?
Electoral interference, industrial data theft, hacking of military systems … Cyber ​​espionage has taken off in the last two decades.

As soon as the new M2 processor was announced, the researchers discovered a flaw Apple’s M1 processor which equips in particular the MacBook. A team of Massachusetts Institute of Technology (MIT) in the United States published an article in which it revealed a flaw nicknamed “Pacman”, which manages to bypass the processor’s last line of defense.

One of the security measures implemented in the processor M1 is called point authentication code (POSTAL CODE) or pointer authentication code, a cryptographic signature confirming that a program has not been tampered with. The PAC is intended to protect against memory-level code injections and buffer overflows.

A security system also provided on other ARM processors

The researchers managed to create an attack that manages to guess this code through speculative execution. It also works against the system kernel. They haven’t tested the new M2 processor, but this one also uses the codes pointer authentication. This security measure is also provided for by artother processors with ARM architecture, especially those by Qualcomm and Samsung, used in most of the smartphone. The defect could therefore have important ramifications in the future.

As this violation is localized at the hardware level, it is impossible to correct it with a software update. However, Apple wants to be reassuring. PACs are an additional line of defense to prevent the exploitation of certain vulnerabilities. Any attack targeting Pacman will therefore first have to find another system flaw to be effective. Devices with M1 chips are therefore not in danger, at least for now, as long as you keep your device up to date.

A few more days to take advantage of our special Father’s Day offer!

Your father is great passionate about science and unusual discoveries? And if you offer him a superb scientific exploration in printed form? Take advantage of -20% on Mag Futura (special offer: 15 € instead of € 19): 220 pages, 4 key themes deciphered to understand everything about the science that will mark 2022.

Take advantage of -20% on Mag Futura

Special offer: -20% discount on Mag Futura

Mag Futura is:

  • 4 big scientific questions for 2022, from the Earth to the Moon
  • 220 pages, 60 experts
  • Home delivery
  • Electronic gift card

Interested in what you just read?



Leave a Comment