FKIE_CVE-2021-3436

Vulnerability from fkie_nvd - Published: 2021-10-05 21:15 - Updated: 2026-06-17 04:05
Severity
4.3 (Medium) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Summary
BT: Possible to overwrite an existing bond during keys distribution phase when the identity address of the bond is known. Zephyr versions >= 1.14.2, >= 2.4.0, >= 2.5.0 contain Use of Multiple Resources with Duplicate Identifier (CWE-694). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-j76f-35mc-4h63
References
vulnerabilities@zephyrproject.orghttp://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-j76f-35mc-4h63Exploit, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-j76f-35mc-4h63Exploit, Patch, Third Party Advisory
Impacted products
Vendor Product Version
zephyrproject zephyr 1.14.2
zephyrproject zephyr 2.4.0
zephyrproject zephyr 2.5.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "zephyr",
          "vendor": "zephyrproject-rtos",
          "versions": [
            {
              "lessThan": "unspecified",
              "status": "affected",
              "version": "1.14.2",
              "versionType": "custom"
            },
            {
              "lessThan": "unspecified",
              "status": "affected",
              "version": "2.4.0",
              "versionType": "custom"
            },
            {
              "lessThan": "unspecified",
              "status": "affected",
              "version": "2.5.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "vulnerabilities@zephyrproject.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:zephyrproject:zephyr:1.14.2:*:*:*:*:*:*:*",
              "matchCriteriaId": "B74694FC-5442-4F7E-AACF-0E1753F50148",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:zephyrproject:zephyr:2.4.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "59AB4423-CBB9-4BC1-9FBB-2690DAA3FDF8",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:zephyrproject:zephyr:2.5.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "CAA88796-7B3D-4328-BAFA-D28BFBE601D9",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "BT: Possible to overwrite an existing bond during keys distribution phase when the identity address of the bond is known. Zephyr versions \u003e= 1.14.2, \u003e= 2.4.0, \u003e= 2.5.0 contain Use of Multiple Resources with Duplicate Identifier (CWE-694). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-j76f-35mc-4h63"
    },
    {
      "lang": "es",
      "value": "BT: Posibilidad de sobrescribir un v\u00ednculo existente durante la fase de distribuci\u00f3n de claves cuando se conoce la direcci\u00f3n de identidad del v\u00ednculo. Zephyr versiones posteriores a 1.14.2 incluy\u00e9ndola, versiones posteriores a 2.4.0 incluy\u00e9ndola, versiones posteriores a 2.5.0 incluy\u00e9ndola, contienen Uso de M\u00faltiples Recursos con Identificador Duplicado (CWE-694). Para m\u00e1s informaci\u00f3n, consulte https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-j76f-35mc-4h63"
    }
  ],
  "id": "CVE-2021-3436",
  "lastModified": "2026-06-17T04:05:05.343",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 6.4,
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 4.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "ADJACENT_NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 4.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 1.4,
        "source": "vulnerabilities@zephyrproject.org",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 2.5,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-10-05T21:15:09.293",
  "references": [
    {
      "source": "vulnerabilities@zephyrproject.org",
      "tags": [
        "Exploit",
        "Patch",
        "Third Party Advisory"
      ],
      "url": "http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-j76f-35mc-4h63"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Patch",
        "Third Party Advisory"
      ],
      "url": "http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-j76f-35mc-4h63"
    }
  ],
  "sourceIdentifier": "vulnerabilities@zephyrproject.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-694"
        }
      ],
      "source": "vulnerabilities@zephyrproject.org",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ],
      "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.

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