{
  "id": "CVE-2021-23436",
  "sourceIdentifier": "report@snyk.io",
  "published": "2021-09-01T18:15:08.477",
  "lastModified": "2021-09-10T13:33:17.097",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "This affects the package immer before 9.0.6. A type confusion vulnerability can lead to a bypass of CVE-2020-28477 when the user-provided keys used in the path parameter are arrays. In particular, this bypass is possible because the condition (p === \"__proto__\" || p === \"constructor\") in applyPatches_ returns false if p is ['__proto__'] (or ['constructor']). The === operator (strict equality operator) returns false if the operands have different type."
    },
    {
      "lang": "es",
      "value": "Esto afecta al paquete immer versiones anteriores a 9.0.6. Una vulnerabilidad de confusi\u00f3n de tipo puede conllevar a una omisi\u00f3n  de CVE-2020-28477 cuando las claves proporcionadas por el usuario usadas en el par\u00e1metro de la ruta son matrices. En particular, esta omisi\u00f3n es posible porque la condici\u00f3n (p === \"__proto__\" || p === \"constructor\") en applyPatches_ devuelve false si p es [\"__proto__\"] (o [\"constructor\"]). El operador === (operador de igualdad estricta) devuelve false si los operandos tienen distinto tipo"
    }
  ],
  "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",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9
      },
      {
        "source": "report@snyk.io",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L",
          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "availabilityImpact": "LOW",
          "baseScore": 5.6,
          "baseSeverity": "MEDIUM"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 3.4
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "accessVector": "NETWORK",
          "accessComplexity": "LOW",
          "authentication": "NONE",
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "availabilityImpact": "PARTIAL",
          "baseScore": 7.5
        },
        "baseSeverity": "HIGH",
        "exploitabilityScore": 10.0,
        "impactScore": 6.4,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-843"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:immer_project:immer:*:*:*:*:*:node.js:*:*",
              "versionEndExcluding": "9.0.6",
              "matchCriteriaId": "701ACA7B-8499-4CCB-A259-D15A38C2EDC0"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/immerjs/immer/commit/fa671e55ee9bd42ae08cc239102b665a23958237",
      "source": "report@snyk.io",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1579266",
      "source": "report@snyk.io",
      "tags": [
        "Exploit",
        "Patch",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://snyk.io/vuln/SNYK-JS-IMMER-1540542",
      "source": "report@snyk.io",
      "tags": [
        "Exploit",
        "Patch",
        "Third Party Advisory"
      ]
    }
  ]
}