The kernel exploit affects Playstation5 as well! That could be important for homebrew fans because there's currently no known way to downgrade a PS4 to an earlier firmware version to make use of patched exploits. The young age of that latest firmware patch, though, means fresh-from-retail PS4 consoles purchased today may still have the older version 9.00 firmware.
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In fact, the hackers suggest on GitHub that examining the differences between those two most recent firmware versions helped them figure out how to get the full exploit working.
Users with a fully updated PS4 won't be able to make use of the exploit, which was already patched out in PS4 firmware version 9.03, released on December 1. This week's exploit release, by contrast, works up to firmware version 9.00, which was released less than three months ago in late September. A previous console exploit released publicly in March worked on consoles running firmware up to version 7.55, which was released by Sony roughly seven months prior in August 2020. This isn't the first time homebrew code has been executable on the PS4. By Monday, the files required for the exploit had been posted on GitHub alongside detailed instructions. Specter, a well-known member of the console hacking scene, released a video of the exploit working on Sunday.
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From there, the exploit can read files from an inserted USB stick and install homebrew software, including existing custom PS4 firmware.ĩ.👀 (awesome work by chendochap & /ME12bLyu3C On the PS4, the full exploit can now be triggered by visiting a website with specially formatted JavaScript via the PS4 web browser, allowing the system to run kernel-level code that bypasses the console's usual security protections. That exploit on the PS4 was publicized in October as a proof of concept after a similar error was found in Apple's Safari WebKit implementation in September. The new exploit builds on a known error in the way that the PS4's WebKit implementation utilizes font-faces.
What's more, the specifics of the exploit suggest similar homebrew capabilities may soon be available on some versions of the PlayStation 5. Hackers have released details of a new exploit that allows homebrew and custom firmware to be installed on PS4 consoles running relatively recent firmware. Andrew Cunningham reader comments 44 with
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