{
  "id": "CVE-2024-40493",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2024-10-22T22:15:04.407",
  "lastModified": "2024-10-25T17:01:22.433",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Null Pointer Dereference in `coap_client_exchange_blockwise2` function in Keith Cullen FreeCoAP 1.0 allows remote attackers to cause a denial of service and potentially execute arbitrary code via a specially crafted CoAP packet that causes `coap_msg_get_payload(resp)` to return a null pointer, which is then dereferenced in a call to `memcpy`."
    },
    {
      "lang": "es",
      "value": " La desreferencia de puntero nulo en la funci\u00f3n `coap_client_exchange_blockwise2` en Keith Cullen FreeCoAP 1.0 permite a atacantes remotos provocar una denegaci\u00f3n de servicio y potencialmente ejecutar c\u00f3digo arbitrario a trav\u00e9s de un paquete CoAP especialmente manipulado que hace que `coap_msg_get_payload(resp)` devuelva un puntero nulo, que luego se desreferencia en una llamada a `memcpy`."
    }
  ],
  "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:H",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9
      },
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "LOW"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ]
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:keith-cullen:freecoap:1.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "E8787D78-015B-4E25-BBCB-B0748567705B"
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  ],
  "references": [
    {
      "url": "https://gist.github.com/dqp10515/fe80005e2fb58ed8ada178ac017e4ad4",
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://github.com/keith-cullen/FreeCoAP/issues/37",
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Issue Tracking"
      ]
    }
  ]
}