Insufficient Syscall Input Validation in AMD ASP Bootloader
CVE-2021-46769

8.8HIGH

Key Information:

Vendor

Amd
Status
2nd Gen Amd Epyc™
3rd Gen Amd Epyc™
Vendor
CVE Published:
9 May 2023

What is CVE-2021-46769?

The ASP Bootloader from AMD exhibits insufficient validation of syscall inputs, potentially enabling a privileged attacker to perform unauthorized Direct Memory Access (DMA) operations. This vulnerability can facilitate the execution of arbitrary code, posing a significant risk to system integrity and security. Users are advised to review the latest security advisories and apply necessary updates to mitigate potential threats.

Affected Version(s)

2nd Gen AMD EPYC™ x86 various

3rd Gen AMD EPYC™ x86 various

References

https://www.amd.com/en/corporate/product-security/bulleti...
vendor-advisory

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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CVE-2021-46769 : Insufficient Syscall Input Validation in AMD ASP Bootloader