CVE-2023-20555

Description

Insufficient input validation in CpmDisplayFeatureSmm may allow an attacker to corrupt SMM memory by overwriting an arbitrary bit in an attacker-controlled pointer potentially leading to arbitrary code execution in SMM.

Category

7.8
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.04%
Vendor Advisory amd.com
Affected: AMD Ryzen™ 3000 Series Desktop Processors “Matisse” AM4
Affected: AMD Ryzen™ 5000 Series Desktop Processors “Vermeer” AM4
Affected: AMD Ryzen™ 5000 Series Desktop Processor with Radeon™ Graphics “Cezanne” AM4
Affected: AMD Ryzen™ 7000 Series Processors “Raphael”
Affected: AMD Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics “Picasso”
Affected: AMD Ryzen™ 4000 Series Desktop Processors with Radeon™ Graphics “Renoir” FP5
Affected: AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics “Dali”/”Dali” FP5
Affected: AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics “Pollock”
Affected: AMD Ryzen™ 3000 Series Mobile Processors with Radeon™ Graphics “Picasso”
Affected: AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics “Renoir” FP6
Affected: AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics “Lucienne”
Affected: AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics “Cezanne”
Affected: AMD Ryzen™ 6000 Series Mobile Processors "Rembrandt"
Affected: AMD Ryzen™ 7030 Series Mobile Processors “Barcelo”
Affected: AMD Ryzen™ 7020 Series Mobile Processors “Mendocino”
Published at:
Updated at:

References

Link Tags
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4003 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2023-20555?
CVE-2023-20555 has been scored as a high severity vulnerability.
How to fix CVE-2023-20555?
To fix CVE-2023-20555, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-20555 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-20555 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-20555?
CVE-2023-20555 affects AMD Ryzen™ 3000 Series Desktop Processors “Matisse” AM4, AMD Ryzen™ 5000 Series Desktop Processors “Vermeer” AM4, AMD Ryzen™ 5000 Series Desktop Processor with Radeon™ Graphics “Cezanne” AM4, AMD Ryzen™ 7000 Series Processors “Raphael”, AMD Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics “Picasso”, AMD Ryzen™ 4000 Series Desktop Processors with Radeon™ Graphics “Renoir” FP5, AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics “Dali”/”Dali” FP5, AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics “Pollock”, AMD Ryzen™ 3000 Series Mobile Processors with Radeon™ Graphics “Picasso”, AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics “Renoir” FP6, AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics “Lucienne”, AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics “Cezanne”, AMD Ryzen™ 6000 Series Mobile Processors "Rembrandt", AMD Ryzen™ 7030 Series Mobile Processors “Barcelo” , AMD Ryzen™ 7020 Series Mobile Processors “Mendocino”.
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