CVE Vulnerabilities

CVE-2023-20521

Time-of-check Time-of-use (TOCTOU) Race Condition

Published: Nov 14, 2023 | Modified: Nov 21, 2024
CVSS 3.x
5.7
MEDIUM
Source:
NVD
CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H
CVSS 2.x
RedHat/V2
RedHat/V3
Ubuntu

TOCTOU in the ASP Bootloader may allow an attacker with physical access to tamper with SPI ROM records after memory content verification, potentially leading to loss of confidentiality or a denial of service.

Weakness

The product checks the state of a resource before using that resource, but the resource’s state can change between the check and the use in a way that invalidates the results of the check.

Affected Software

Name Vendor Start Version End Version
Epyc_7001_firmware Amd * naplespi_1.0.0.h (excluding)

Potential Mitigations

References