Executive Summary

Informations
Name CVE-2023-20521 First vendor Publication 2023-11-14
Vendor Cve Last vendor Modification 2024-11-21

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H
Overall CVSS Score 5.7
Base Score 5.7 Environmental Score 5.7
impact SubScore 5.2 Temporal Score 5.7
Exploitabality Sub Score 0.5
 
Attack Vector Physical Attack Complexity High
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact None Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score N/A Attack Range N/A
Cvss Impact Score N/A Attack Complexity N/A
Cvss Expoit Score N/A Authentication N/A
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-20521

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition

CPE : Common Platform Enumeration

TypeDescriptionCount
Os 2
Os 2
Os 1
Os 1
Os 1
Os 1
Os 2
Os 2
Os 2
Os 2
Os 2
Os 2
Os 2
Os 2
Os 2
Os 2
Os 2
Os 4
Os 2
Os 2
Os 2
Os 2
Os 2
Os 4
Os 4
Os 4
Os 2
Os 2
Os 2
Os 2
Os 4
Os 4
Os 2
Os 2
Os 2
Os 2
Os 4
Os 4
Os 4
Os 2
Os 2
Os 4
Os 3
Os 4
Os 2
Os 2
Os 2
Os 4
Os 2
Os 2
Os 4
Os 4
Os 2
Os 2
Os 2
Os 4
Os 4
Os 2
Os 2
Os 4
Os 2
Os 2
Os 4
Os 2
Os 2
Os 2
Os 4
Os 4
Os 2
Os 4
Os 4
Os 2
Os 2
Os 2
Os 2
Os 4
Os 4
Os 4
Os 4
Os 4
Os 2
Os 2
Os 2
Os 2
Os 2
Os 2
Os 2
Os 2
Os 2
Os 1
Os 1
Os 1
Os 1

Sources (Detail)

https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3002
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4002
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-5001
Source Url

Alert History

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Date Informations
2024-11-25 09:31:37
  • Multiple Updates
2024-06-19 00:27:36
  • Multiple Updates
2024-02-14 00:27:52
  • Multiple Updates
2024-01-19 02:31:10
  • Multiple Updates
2023-11-27 21:27:34
  • Multiple Updates
2023-11-15 00:27:27
  • First insertion