A malicious or compromised UApp or ABL could potentially change the value that the ASP uses for its reserved DRAM, to one outside of the fenced area, potentially leading to data exposure.
CWE-668
CVE-2021-26366
An attacker, who gained elevated privileges via some other vulnerability, may be able to read data from Boot ROM resulting in a loss of system integrity.
CVE-2021-26317
Failure to verify the protocol in SMM may allow an attacker to control the protocol and modify SPI flash resulting in a potential arbitrary code execution.
CVE-2021-26327
Insufficient validation of guest context in the SNP Firmware could lead to a potential loss of guest confidentiality.
CVE-2021-26341
Some AMD CPUs may transiently execute beyond unconditional direct branches, which may potentially result in data leakage.
CVE-2021-26343
Insufficient validation in ASP BIOS and DRTM commands may allow malicious supervisor x86 software to disclose the contents of sensitive memory which may result in information disclosure.