{
  "id": "CVE-2023-4020",
  "sourceIdentifier": "product-security@silabs.com",
  "published": "2023-12-15T21:15:08.560",
  "lastModified": "2024-09-25T16:15:08.653",
  "vulnStatus": "Modified",
  "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."
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE",
          "baseScore": 9.1,
          "baseSeverity": "CRITICAL"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.2
      },
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        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "CHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE",
          "baseScore": 9.0,
          "baseSeverity": "CRITICAL"
        },
        "exploitabilityScore": 2.5,
        "impactScore": 5.8
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    },
    {
      "source": "product-security@silabs.com",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        },
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:silabs:gecko_software_development_kit:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "1.0.0",
              "versionEndExcluding": "4.4.0",
              "matchCriteriaId": "1CCF9CCF-153F-40B5-941A-A430C146C3BA"
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  ],
  "references": [
    {
      "url": "https://community.silabs.com/069Vm0000004b95IAA",
      "source": "product-security@silabs.com",
      "tags": [
        "Permissions Required"
      ]
    },
    {
      "url": "https://github.com/SiliconLabs/gecko_sdk/releases",
      "source": "product-security@silabs.com",
      "tags": [
        "Release Notes"
      ]
    }
  ]
}