Insufficient DRAM Address Validation in AMD System Management Unit
CVE-2023-20533

7.5HIGH

Key Information:

Vendor

Amd
Status
Ryzen™ 3000 Series Desktop Processors “matisse"
Amd Ryzen™ 5000 Series Desktop Processors “vermeer”
Amd Ryzen™ Threadripper™ 3000 Series Processors “castle Peak” Hedt
Amd Ryzen™ Threadripper™ Pro Processors “castle Peak” Ws Sp3
Vendor
CVE Published:
14 November 2023

What is CVE-2023-20533?

The vulnerability involves insufficient validation of DRAM addresses within the System Management Unit (SMU) of AMD products. This flaw may enable an attacker to manipulate the system's memory by reading from or writing to unauthorized DRAM addresses, potentially leading to system instability or a denial-of-service condition. For detailed information on the implications and recommended mitigations, please refer to the official AMD security bulletins.

Affected Version(s)

2nd Gen AMD EPYC™ Processors x86 various

3rd Gen AMD EPYC™ Processors x86 various

AMD EPYC™ Embedded 7002 various

References

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

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.
CVE-2023-20533 : Insufficient DRAM Address Validation in AMD System Management Unit