FKIE_CVE-2023-4020

Vulnerability from fkie_nvd - Published: 2023-12-15 21:15 - Updated: 2026-06-17 06:36
Severity
9.0 (Critical) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
9.1 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Summary
An unvalidated input in a library function responsible for communicating between secure and non-secure memory in Silicon Labs TrustZone implementation allows reading/writing of memory in the secure region of memory from the non-secure region of memory.
References
product-security@silabs.comhttps://community.silabs.com/069Vm0000004b95IAAPermissions Required
product-security@silabs.comhttps://github.com/SiliconLabs/gecko_sdk/releasesRelease Notes
af854a3a-2127-422b-91ae-364da2661108https://community.silabs.com/069Vm0000004b95IAAPermissions Required
af854a3a-2127-422b-91ae-364da2661108https://github.com/SiliconLabs/gecko_sdk/releasesRelease Notes
Impacted products
Vendor Product Version
silabs gecko_software_development_kit *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "GSDK",
          "vendor": "silabs.com",
          "versions": [
            {
              "lessThan": "4.4.0",
              "status": "affected",
              "version": "1.0",
              "versionType": "patch"
            }
          ]
        }
      ],
      "source": "product-security@silabs.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:silabs:gecko_software_development_kit:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "1CCF9CCF-153F-40B5-941A-A430C146C3BA",
              "versionEndExcluding": "4.4.0",
              "versionStartIncluding": "1.0.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An unvalidated input in a library function responsible for communicating between secure and non-secure memory in Silicon Labs TrustZone implementation allows reading/writing of memory in the secure region of memory from the non-secure region of memory."
    },
    {
      "lang": "es",
      "value": "Una entrada no validada en una funci\u00f3n de librer\u00eda responsable de la comunicaci\u00f3n entre la memoria segura y no segura en la implementaci\u00f3n TrustZone de Silicon Labs permite la lectura/escritura de la memoria en la regi\u00f3n segura de la memoria desde la regi\u00f3n no segura de la memoria."
    }
  ],
  "id": "CVE-2023-4020",
  "lastModified": "2026-06-17T06:36:55.697",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 9.0,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.5,
        "impactScore": 5.8,
        "source": "product-security@silabs.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 9.1,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.2,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2023-12-15T21:15:08.560",
  "references": [
    {
      "source": "product-security@silabs.com",
      "tags": [
        "Permissions Required"
      ],
      "url": "https://community.silabs.com/069Vm0000004b95IAA"
    },
    {
      "source": "product-security@silabs.com",
      "tags": [
        "Release Notes"
      ],
      "url": "https://github.com/SiliconLabs/gecko_sdk/releases"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Permissions Required"
      ],
      "url": "https://community.silabs.com/069Vm0000004b95IAA"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Release Notes"
      ],
      "url": "https://github.com/SiliconLabs/gecko_sdk/releases"
    }
  ],
  "sourceIdentifier": "product-security@silabs.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        },
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ],
      "source": "product-security@silabs.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

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  • 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.



Related by attack behaviour

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