CVE-2023-20555: amd athlon_3015ce_firmware Out-of-bounds Write

Vulnerability summary

CVE-2023-20555 is a high (CVSS 7.8) Out-of-bounds Write vulnerability in amd athlon_3015ce_firmware. EPSS estimates a 0.32% chance of exploitation in the next 30 days, higher than 24% of scored vulnerabilities.

Timeline

1. 08-08-2023
   PublishedVulnerability first disclosed.
2. 24-10-2024
   Last modifiedVulnerability information updated.

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.

• CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.