VulnerabilityModified
CVE-2023-20578
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.
MEDIUM 6.4EPSS 0.12%
Does this matter?
Lower severity and a low EPSS score (0.12%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 6.4 MEDIUMCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.12% probability · 2th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-367
- Affected
- amd/epyc 8024pn firmware · amd/epyc 8024p firmware · amd/epyc 8124pn firmware · amd/epyc 8124p firmware · amd/epyc 8224pn firmware · amd/epyc 8224p firmware · amd/epyc 8324pn firmware · amd/epyc 8324p firmware · amd/epyc 8434pn firmware · amd/epyc 8434p firmware · amd/epyc 8534pn firmware · amd/epyc 8534p firmware · amd/epyc 9734 firmware · amd/epyc 9754s firmware · amd/epyc 9754 firmware · amd/epyc 9184x firmware · amd/epyc 9384x firmware · amd/epyc 9684x firmware · amd/epyc 9124 firmware · amd/epyc 9174f firmware · +40 more
- Source
- psirt@amd.com
References
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.