Improper Access Control in ASP Bootloader Affects AMD Products
CVE-2023-20520

9.8CRITICAL

Key Information:

Vendor

Amd
Status
1st Gen Amd Epyc™
2nd Gen Amd Epyc™
3rd Gen Amd Epyc™
Vendor
CVE Published:
9 May 2023

What is CVE-2023-20520?

A flaw in the ASP Bootloader's access control settings may allow an attacker to manipulate the return address. This could result in a stack-based buffer overrun, possibly enabling the execution of arbitrary code. Adequate security measures are essential to mitigate the risk associated with this vulnerability.

Affected Version(s)

1st Gen AMD EPYC™ x86 various

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:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.
CVE-2023-20520 : Improper Access Control in ASP Bootloader Affects AMD Products