CVE-2023-20521
CVSS 3.1 Score 5.7 of 10 (medium)
Details
Summary
CVE-2023-20521 is a vulnerability affecting the TOCTOU (Time of Check to Time of Use) in the ASP (Advanced Software Protection) Bootloader. An attacker with physical access to the system can manipulate SPI ROM records after memory content verification, resulting in potential loss of confidentiality or denial of service. This issue allows an adversary to bypass the security measures put in place by the ASP Bootloader, posing a significant risk to system integrity. The vulnerability could potentially enable unauthorized access or modification of critical system files, causing disruption or exposure of sensitive data.
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Affected Products
- Advanced Micro Devices (AMD) EPYC 75F3 FIRMWARE
- Advanced Micro Devices (AMD) EPYC 7343 FIRMWARE
- Advanced Micro Devices (AMD) EPYC 7513 FIRMWARE
- Advanced Micro Devices (AMD) EPYC 74F3 FIRMWARE
- Advanced Micro Devices (AMD) EPYC 7643 FIRMWARE
Affected Vendors
- Advanced Micro Devices
Advisories, Assessments, and Mitigations
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