Vulnerability Details : CVE-2023-20521

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.
Published 2023-11-14 19:15:16
Updated 2024-06-18 19:15:57
Source Advanced Micro Devices Inc.
View at NVD,   CVE.org
Vulnerability category: Denial of service

Products affected by CVE-2023-20521

Exploit prediction scoring system (EPSS) score for CVE-2023-20521

EPSS FAQ
0.06%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 25 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2023-20521

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
5.7
 MEDIUM CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H
0.5
5.2
 NIST
3.3
 LOW CVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:L
0.3
2.7
 Advanced Micro Devices Inc. 2024-06-18

CWE ids for CVE-2023-20521

  • 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. This can cause the product to perform invalid actions when the resource is in an unexpected state.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2023-20521

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