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CVE-2023-20578

Aug. 13, 2024, 5:15 p.m.

Tags

psirt@amd.com
2024-08-13
CVE-2023-20578

CVSS Score

7.5 / 10

Product(s) Impacted

UNKNOWN

Description

A TOCTOU (Time-Of-Check-Time-Of-Use) in SMM may allow an attacker with ring0 privileges and access to the BIOS menu or UEFI shell to modify the communications buffer potentially resulting in arbitrary code execution.

Weaknesses

Date

Published: Aug. 13, 2024, 5:15 p.m.

Last Modified: Aug. 13, 2024, 5:15 p.m.

Status : Received

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

psirt@amd.com

CVSS Data

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

HIGH

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score
7.5
Exploitability Score
0.8
Impact Score
6.0
Base Severity
HIGH
CVSS Vector String

The CVSS vector string provides an in-depth view of the vulnerability metrics.

View Vector String

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

References

https://www.amd.com/ psirt@amd.com