CVE-2023-20593 AMD Zen Processor Exploit

CVE-2023-20593 AMD Zen Processor Exploit

vtar.gz by Prapattimynk

Zenbleed (UAF in AMD Zen2 processors, exploitation included, It turns out that with precise scheduling, you can cause some processors to recover from a mispredicted vzeroupper incorrectly)If you remov

Android Android 5.0Exploits And POCs
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File CVE-2023-20593 Exploit
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CVE-2023-20593 Exploit is the most famous version in the CVE-2023-20593 Exploit series of publisher
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Zenbleed (UAF in AMD Zen2 processors, exploitation included, It turns out that with precise scheduling, you can cause some processors to recover from a mispredicted vzeroupper incorrectly)
“If you remove the first word from the string “hello world”, what should the result be? This is the story of how we discovered that the answer could be your root password!”

First of all you need to trigger something called the XMM Register Merge Optimization , followed by a register rename (https://en.wikipedia.org/wiki/Register_renaming) and a mispredicted vzeroupper.

⚠️We now know that basic operations like strlen, memcpy and strcmp will use the vector registers – so we can effectively spy on those operations happening anywhere on the system! It doesn’t matter if they’re happening in other virtual machines, sandboxes, containers, processes, whatever! This works because the register file is shared by everything on the same physical core. In fact, two hyperthreads even share the same physical register file.



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