Vulnerability-Lookup

BDU:2024-00345 (CVE-2023-20521)

Vulnerability from fstec – Published: 2024-01-17 – Updated: 2024-01-17 – View on bdu.fstec.ru Fixed

Title

Уязвимость компонента ASP Bootloader микропрограммного обеспечения процессоров AMD, позволяющая нарушителю раскрыть защищаемую информацию или вызвать отказ в обслуживании

Summary

Уязвимость компонента ASP Bootloader микропрограммного обеспечения процессоров AMD связана с состоянием гонки. Эксплуатация уязвимости может позволить нарушителю раскрыть защищаемую информацию или вызвать отказ в обслуживании

Severity

5.6 (Medium) CVSS 2.0


                      
                        AV:L/AC:H/Au:N/C:C/I:N/A:C

5.7 (Medium) CVSS 3.0


                      
                        CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H

Class

Code vulnerability

Status

Confirmed by the vendor

Exploitation

Timing and state manipulation

Incidents

Being clarified

Remediation

Software update

CWE

CWE-367 - Ситуация гонки Time-of-check Time-of-use (TOCTOU)

Aliases

CVE-2023-20521

References

2 references

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

Impacted products

8 products from 1 vendor

Vendors

Advanced Micro Devices Inc.

Products

1st Gen AMD EPYC, 3rd Gen AMD EPYC, 2nd Gen AMD EPYC, AMD Athlon 3000 Series Mobile Processors with Radeon Graphics Pollock, AMD Athlon 3000 Series Desktop Processors with Radeon Graphics Picasso, AMD Ryzen Threadripper 2000 Series Processors, AMD Athlon 3000 Series Mobile Processors with Radeon Graphics Dali FP5, AMD Athlon 3000 Series Mobile Processors with Radeon Graphics Dali

Versions

до NaplesPI 1.0.0.H (1st Gen AMD EPYC), до MilanPI 1.0.0.7 (3rd Gen AMD EPYC), до RomePI 1.0.0.D (2nd Gen AMD EPYC), до PollockPI-FT5 1.0.0.5 (AMD Athlon 3000 Series Mobile Processors with Radeon Graphics Pollock), до ComboAM4PI 1.0.0.9 (AMD Athlon 3000 Series Desktop Processors with Radeon Graphics Picasso), до ComboAM4v2 PI 1.2.0.8 (AMD Athlon 3000 Series Desktop Processors with Radeon Graphics Picasso), до SummitPI-SP3r2 1.1.0.6 (AMD Ryzen Threadripper 2000 Series Processors), до PicassoPI-FP5 1.0.0.E (AMD Athlon 3000 Series Mobile Processors with Radeon Graphics Dali FP5), до PicassoPI-FP5 1.0.0.E (AMD Athlon 3000 Series Mobile Processors with Radeon Graphics Dali), до PicassoPI-FP5 1.0.0.E (AMD Athlon 3000 Series Desktop Processors with Radeon Graphics Picasso)

Product types

Микропрограммный код аппаратных компонентов компьютера, Firmware

Mitigations

Использование рекомендаций производителя: https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3002 https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4002

JSON

To clipboard

{
  "CVSS 2.0": "AV:L/AC:H/Au:N/C:C/I:N/A:C",
  "CVSS 3.0": "AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H",
  "CVSS 4.0": null,
  "remediation_\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": null,
  "remediation_\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435": null,
  "\u0412\u0435\u043d\u0434\u043e\u0440 \u041f\u041e": "Advanced Micro Devices Inc.",
  "\u0412\u0435\u0440\u0441\u0438\u044f \u041f\u041e": "\u0434\u043e NaplesPI 1.0.0.H (1st Gen AMD EPYC), \u0434\u043e MilanPI 1.0.0.7 (3rd Gen AMD EPYC), \u0434\u043e RomePI 1.0.0.D (2nd Gen AMD EPYC), \u0434\u043e PollockPI-FT5 1.0.0.5 (AMD Athlon 3000 Series Mobile Processors with Radeon Graphics Pollock), \u0434\u043e ComboAM4PI 1.0.0.9 (AMD Athlon 3000 Series Desktop Processors with Radeon Graphics Picasso), \u0434\u043e ComboAM4v2 PI 1.2.0.8 (AMD Athlon 3000 Series Desktop Processors with Radeon Graphics Picasso), \u0434\u043e SummitPI-SP3r2 1.1.0.6 (AMD Ryzen Threadripper 2000 Series Processors), \u0434\u043e \tPicassoPI-FP5 1.0.0.E (AMD Athlon 3000 Series Mobile Processors with Radeon Graphics Dali FP5), \u0434\u043e \tPicassoPI-FP5 1.0.0.E (AMD Athlon 3000 Series Mobile Processors with Radeon Graphics Dali), \u0434\u043e PicassoPI-FP5 1.0.0.E (AMD Athlon 3000 Series Desktop Processors with Radeon Graphics Picasso)",
  "\u0412\u043e\u0437\u043c\u043e\u0436\u043d\u044b\u0435 \u043c\u0435\u0440\u044b \u043f\u043e \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044e": "\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044f:\nhttps://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3002\nhttps://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4002",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "14.11.2023",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "17.01.2024",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "17.01.2024",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2024-00345",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u044b \u0434\u0440\u0443\u0433\u0438\u0445 \u0441\u0438\u0441\u0442\u0435\u043c \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "CVE-2023-20521",
  "\u0418\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430",
  "\u041a\u043b\u0430\u0441\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043a\u043e\u0434\u0430",
  "\u041d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 \u041f\u041e": "1st Gen AMD EPYC, 3rd Gen AMD EPYC, 2nd Gen AMD EPYC, AMD Athlon 3000 Series Mobile Processors with Radeon Graphics Pollock, AMD Athlon 3000 Series Desktop Processors with Radeon Graphics Picasso, AMD Ryzen Threadripper 2000 Series Processors, AMD Athlon 3000 Series Mobile Processors with Radeon Graphics Dali FP5, AMD Athlon 3000 Series Mobile Processors with Radeon Graphics Dali",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u041e\u0421 \u0438 \u0442\u0438\u043f \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b": null,
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u0430 ASP Bootloader \u043c\u0438\u043a\u0440\u043e\u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u043e\u0432 AMD, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u0440\u0430\u0441\u043a\u0440\u044b\u0442\u044c \u0437\u0430\u0449\u0438\u0449\u0430\u0435\u043c\u0443\u044e \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044e \u0438\u043b\u0438 \u0432\u044b\u0437\u0432\u0430\u0442\u044c \u043e\u0442\u043a\u0430\u0437 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0438",
  "\u041d\u0430\u043b\u0438\u0447\u0438\u0435 \u044d\u043a\u0441\u043f\u043b\u043e\u0439\u0442\u0430": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "\u0421\u0438\u0442\u0443\u0430\u0446\u0438\u044f \u0433\u043e\u043d\u043a\u0438 Time-of-check Time-of-use (TOCTOU) (CWE-367)",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u0430 ASP Bootloader \u043c\u0438\u043a\u0440\u043e\u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u043e\u0432 AMD \u0441\u0432\u044f\u0437\u0430\u043d\u0430 \u0441 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435\u043c \u0433\u043e\u043d\u043a\u0438. \u042d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043c\u043e\u0436\u0435\u0442 \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0442\u044c \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u0440\u0430\u0441\u043a\u0440\u044b\u0442\u044c \u0437\u0430\u0449\u0438\u0449\u0430\u0435\u043c\u0443\u044e \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044e \u0438\u043b\u0438 \u0432\u044b\u0437\u0432\u0430\u0442\u044c \u043e\u0442\u043a\u0430\u0437 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0438",
  "\u041f\u043e\u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u044f \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": null,
  "\u041f\u0440\u043e\u0447\u0430\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f": null,
  "\u0421\u0432\u044f\u0437\u044c \u0441 \u0438\u043d\u0446\u0438\u0434\u0435\u043d\u0442\u0430\u043c\u0438 \u0418\u0411": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u0421\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u0430",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044f": "\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438": "\u041c\u0430\u043d\u0438\u043f\u0443\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0441\u0440\u043e\u043a\u0430\u043c\u0438 \u0438 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435\u043c",
  "\u0421\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438": "https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3002\nhttps://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4002",
  "\u0421\u0442\u0430\u0442\u0443\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u0435\u043c",
  "\u0422\u0438\u043f \u041f\u041e": "\u041c\u0438\u043a\u0440\u043e\u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u044b\u0439 \u043a\u043e\u0434 \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u044b\u0445 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u043e\u0432 \u043a\u043e\u043c\u043f\u044c\u044e\u0442\u0435\u0440\u0430, \u041c\u0438\u043a\u0440\u043e\u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u044b\u0439 \u043a\u043e\u0434",
  "\u0422\u0438\u043f \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "CWE-367",
  "\u0423\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0421\u0440\u0435\u0434\u043d\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 2.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 5,6)\n\u0421\u0440\u0435\u0434\u043d\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 3.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 5,7)"
}

CVE-2023-20521 (GCVE-0-2023-20521)

Vulnerability from cvelistv5 – Published: 2023-11-14 18:52 – Updated: 2024-08-02 09:05

Summary

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.

Severity

3.3 (Low)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2023-11-27 19:38 UTC

Assigner

AMD mitre root

References

3 references

URL	Tags
https://www.amd.com/en/corporate/product-security…	vendor-advisory
https://www.amd.com/en/corporate/product-security…	vendor-advisory
https://www.amd.com/en/corporate/product-security…	vendor-advisory

Impacted products

14 products

Vendor	Product	Version
AMD	Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics “Picasso” AM4	Affected: various
AMD	Ryzen™ Threadripper™ 2000 Series Processors “Colfax”	Affected: various
AMD	Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics “Dali”/”Dali” FP5	Affected: various
AMD	Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics “Pollock”	Affected: various
AMD	Ryzen™ 3000 Series Mobile Processor with Radeon™ Graphics “Picasso” FP5	Affected: various
AMD	1st Gen AMD EPYC™ Processors	Affected: various
AMD	2nd Gen AMD EPYC™ Processors	Affected: various
AMD	3rd Gen AMD EPYC™ Processors	Affected: various
AMD	AMD EPYC™ Embedded 3000	Affected: various
AMD	AMD EPYC™ Embedded 7002	Affected: various
AMD	AMD EPYC™ Embedded 7003	Affected: various
AMD	AMD Ryzen™ Embedded R1000	Affected: various
AMD	AMD Ryzen™ Embedded R2000	Affected: various
AMD	AMD Ryzen™ Embedded V1000	Affected: various

Date Public

2023-11-14 17:30

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-20521",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2023-11-27T19:38:18.334372Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-07-26T14:56:31.535Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T09:05:36.873Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4002"
          },
          {
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3002"
          },
          {
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-5001"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageName": "PI",
          "platforms": [
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          ],
          "product": "Athlon\u2122 3000 Series Desktop Processors with Radeon\u2122 Graphics \u201cPicasso\u201d AM4",
          "vendor": "AMD",
          "versions": [
            {
              "status": "affected",
              "version": "various"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
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          ],
          "product": "Ryzen\u2122 Threadripper\u2122 2000 Series Processors \u201cColfax\u201d",
          "vendor": "AMD",
          "versions": [
            {
              "status": "affected",
              "version": "various"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageName": "PI",
          "platforms": [
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          "product": "Athlon\u2122 3000 Series Mobile Processors with Radeon\u2122 Graphics \u201cDali\u201d/\u201dDali\u201d FP5",
          "vendor": "AMD",
          "versions": [
            {
              "status": "affected",
              "version": "various"
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          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageName": "PI",
          "platforms": [
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          ],
          "product": "Athlon\u2122 3000 Series Mobile Processors with Radeon\u2122 Graphics   \u201cPollock\u201d",
          "vendor": "AMD",
          "versions": [
            {
              "status": "affected",
              "version": "various"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageName": "PI",
          "platforms": [
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          ],
          "product": "Ryzen\u2122 3000 Series Mobile Processor with Radeon\u2122 Graphics \u201cPicasso\u201d FP5",
          "vendor": "AMD",
          "versions": [
            {
              "status": "affected",
              "version": "various"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageName": "PI",
          "platforms": [
            "x86"
          ],
          "product": "1st Gen AMD EPYC\u2122 Processors",
          "vendor": "AMD",
          "versions": [
            {
              "status": "affected",
              "version": "various"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageName": "PI",
          "platforms": [
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          ],
          "product": "2nd Gen AMD EPYC\u2122 Processors",
          "vendor": "AMD",
          "versions": [
            {
              "status": "affected",
              "version": "various"
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          ]
        },
        {
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          ],
          "product": "3rd Gen AMD EPYC\u2122 Processors",
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              "version": "various"
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          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "AMD EPYC\u2122 Embedded 3000",
          "vendor": "AMD",
          "versions": [
            {
              "status": "affected",
              "version": "various"
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          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "AMD EPYC\u2122 Embedded 7002",
          "vendor": "AMD",
          "versions": [
            {
              "status": "affected",
              "version": "various"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "AMD EPYC\u2122 Embedded 7003",
          "vendor": "AMD",
          "versions": [
            {
              "status": "affected",
              "version": "various"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "AMD Ryzen\u2122 Embedded R1000",
          "vendor": "AMD",
          "versions": [
            {
              "status": "affected",
              "version": "various"
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          ]
        },
        {
          "defaultStatus": "unaffected",
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          "vendor": "AMD",
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        },
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          "product": "AMD Ryzen\u2122 Embedded V1000",
          "vendor": "AMD",
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            {
              "status": "affected",
              "version": "various"
            }
          ]
        }
      ],
      "datePublic": "2023-11-14T17:30:00.000Z",
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          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "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.\n\n\n\n\n\n\n\n\n\n\n\n\u003cbr\u003e"
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          ],
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            "attackVector": "PHYSICAL",
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            "baseScore": 3.3,
            "baseSeverity": "LOW",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:L",
            "version": "3.1"
          },
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          "scenarios": [
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              "value": "GENERAL"
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          ]
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      ],
      "providerMetadata": {
        "dateUpdated": "2024-06-18T18:42:56.250Z",
        "orgId": "b58fc414-a1e4-4f92-9d70-1add41838648",
        "shortName": "AMD"
      },
      "references": [
        {
          "tags": [
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          "url": "https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4002"
        },
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3002"
        },
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-5001"
        }
      ],
      "source": {
        "advisory": "AMD-SB-4002, AMD-SB-3002, AMD-SB-5001",
        "discovery": "UNKNOWN"
      },
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        "engine": "Vulnogram 0.1.0-dev"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "b58fc414-a1e4-4f92-9d70-1add41838648",
    "assignerShortName": "AMD",
    "cveId": "CVE-2023-20521",
    "datePublished": "2023-11-14T18:52:31.662Z",
    "dateReserved": "2022-10-27T18:53:39.737Z",
    "dateUpdated": "2024-08-02T09:05:36.873Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.