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CVE-2023-20521

LOW
Published 2023-11-14T18:52:31.662Z
Actions:

Expert Analysis

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CVSS Score

V3.1
3.3
/10
CVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:L
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.000
probability
of exploitation in the wild

There is a 0.0% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.099
Higher than 9.9% of all CVEs

Attack Vector Metrics

Attack Vector
PHYSICAL
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED

Impact Metrics

Confidentiality
LOW
Integrity
NONE
Availability
LOW

Description

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

AMD

Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics “Picasso” AM4

Affected Versions:

various
AMD

Ryzen™ Threadripper™ 2000 Series Processors “Colfax”

Affected Versions:

various
AMD

Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics “Dali”/”Dali” FP5

Affected Versions:

various
AMD

Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics “Pollock”

Affected Versions:

various
AMD

Ryzen™ 3000 Series Mobile Processor with Radeon™ Graphics “Picasso” FP5

Affected Versions:

various
AMD

1st Gen AMD EPYC™ Processors

Affected Versions:

various
AMD

2nd Gen AMD EPYC™ Processors

Affected Versions:

various
AMD

3rd Gen AMD EPYC™ Processors

Affected Versions:

various
AMD

AMD EPYC™ Embedded 3000

Affected Versions:

various
AMD

AMD EPYC™ Embedded 7002

Affected Versions:

various
AMD

AMD EPYC™ Embedded 7003

Affected Versions:

various
AMD

AMD Ryzen™ Embedded R1000

Affected Versions:

various
AMD

AMD Ryzen™ Embedded R2000

Affected Versions:

various
AMD

AMD Ryzen™ Embedded V1000

Affected Versions:

various

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed MODERATE

GHSA-7r55-mp9r-c8pj

Advisory Details

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.

CVSS Scoring

CVSS Score

5.0

CVSS Vector

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

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2023-20521
WEB https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3002
WEB https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4002
WEB https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-5001

Advisory provided by GitHub Security Advisory Database. Published: November 14, 2023, Modified: February 13, 2024

References

https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4002
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3002
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-5001
Published: 2023-11-14T18:52:31.662Z
Last Modified: 2024-08-02T09:05:36.873Z
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