A critical vulnerability in AMD’s Zen 1 through Zen 4 processors allows attackers to bypass microcode signature validation, potentially undermining hardware-based security mechanisms. The flaw stems from AMD’s use of AES-CMAC as a hash function during microcode patch verification a design decision that enables collision attacks and forged RSA keys. Vulnerability Rooted in Cryptographic […] The post AMD Microcode Vulnerability Allows Attackers to Load Malicious Patches appeared first on GBHackers Security | #1 Globally Trusted Cyber Security News Platform.
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