TOCTOU Vulnerability in ASP Bootloader of AMD Products

CVE-2023-20521

Summary

A time-of-check to time-of-use (TOCTOU) vulnerability exists within the ASP Bootloader utilized in certain AMD products. This security flaw allows an attacker with physical access to exploit the race condition during memory content verification. By tampering with SPI ROM records after the integrity check, the attacker could compromise confidentiality or potentially initiate a denial of service, undermining the reliability of the affected devices.

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