Potential Mapping of DRAM Regions in Protected Areas Could Lead to Loss of Platform Integrity

CVE-2021-26387

Summary

An access control vulnerability within the ASP kernel of AMD products can be exploited by an attacker with privileged access. This scenario involves the attacker having access to AMD signing keys and the BIOS menu or UEFI shell. By leveraging this access, the attacker could potentially map DRAM regions in protected areas, which may compromise the integrity of the platform. It highlights a significant concern for users relying on AMD technologies who must ensure proper access controls are enforced to mitigate risks.

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