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‘Thunderclap’ vulnerability could leave Thunderbolt computers open to attacks

Wilbert Doyle by Wilbert Doyle
September 6, 2023

A group of researchers has discovered a new security vulnerability in the Thunderbolt records switch specification referred to as “Thunderclap” that would go away computer systems open to severe assaults from, in any other case, harmless USB-C or DisplayPort hardware.

As researcher Theo Markets explains, Thunderclap takes gain of the privileged, direct-memory get right of entry to (DMA) that Thunderbolt accessories are granted to gain entry to the goal device. Unless proper protections are put in the region, hackers can use that to get entry to thieve statistics, song files, and run malicious code.

Thunderclap

It’s the kind of OS-degree get entry to add-ons like GPUs or community cards that are usually granted. Because Thunderbolt is designed to duplicate those features externally, it requires the identical stage of getting entry to. However, the external nature of the setup makes it greater vulnerable to assault. Fundamentally, plugging a malicious device into a port is less difficult than cracking open someone’s pc and plugging in a hacked snapshots card.

The Thunderclap vulnerability isn’t particular to Thunderbolt 3; older Thunderbolt gadgets based totally on DisplayPort instead of USB-C are also theoretically at threat.

Markets and his group found the vulnerability in 2016 and have already launched it to manufacturers who’ve been developing fixes: Apple rolled out a restore for a particular part of the worm in macOS 10.12. Four that identical year and maximum currently up to date Macs must be protected in opposition to the assault. Windows 10 version 1803 additionally protects in opposition to the vulnerability on a firmware level for more moderen gadgets.

It’s now not the form of attack most customers will usually stumble upon. (Hackers, using in particular poisoned USB-C devices to goal computers with the aid of pretending to be a fake GPU, normally doesn’t arise for most people.) But it’s a great reminder which you need to be careful about plugging your computer into accessories or chargers you disagree with.

And even though Thunderclap won’t even hit your device, it highlights that even our fine requirements aren’t ideal, even for the excessive-give-up facet of the peripherals industry that Thunderbolt represents.

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Wilbert Doyle

Wilbert Doyle

I am a technology freak, I love new technologies and gadgets. I am always ready to learn new things, so I can share this knowledge with other people. and I am really happy when people like my blogs.

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