FKIE_CVE-2021-29445

Vulnerability from fkie_nvd - Published: 2021-04-16 22:15 - Updated: 2026-06-17 03:47
Severity
5.9 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
5.9 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Summary
jose-node-esm-runtime is an npm package which provides a number of cryptographic functions. In versions prior to 3.11.4 the AES_CBC_HMAC_SHA2 Algorithm (A128CBC-HS256, A192CBC-HS384, A256CBC-HS512) decryption would always execute both HMAC tag verification and CBC decryption, if either failed `JWEDecryptionFailed` would be thrown. But a possibly observable difference in timing when padding error would occur while decrypting the ciphertext makes a padding oracle and an adversary might be able to make use of that oracle to decrypt data without knowing the decryption key by issuing on average 128*b calls to the padding oracle (where b is the number of bytes in the ciphertext block). A patch was released which ensures the HMAC tag is verified before performing CBC decryption. The fixed versions are `>=3.11.4`. Users should upgrade to `^3.11.4`.
References
security-advisories@github.comhttps://github.com/panva/jose/security/advisories/GHSA-4v4g-726h-xvfvThird Party Advisory
security-advisories@github.comhttps://www.npmjs.com/package/jose-node-esm-runtimeProduct, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/panva/jose/security/advisories/GHSA-4v4g-726h-xvfvThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.npmjs.com/package/jose-node-esm-runtimeProduct, Third Party Advisory
Impacted products
Vendor Product Version
jose-node-cjs-runtime_project jose-node-cjs-runtime *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "jose-node-esm-runtime",
          "vendor": "panva",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 3.11.4"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:jose-node-cjs-runtime_project:jose-node-cjs-runtime:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "03D23205-6974-4025-A286-1F56B7EE9620",
              "versionEndExcluding": "3.11.4",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "jose-node-esm-runtime is an npm package which provides a number of cryptographic functions. In versions prior to 3.11.4 the AES_CBC_HMAC_SHA2 Algorithm (A128CBC-HS256, A192CBC-HS384, A256CBC-HS512) decryption would always execute both HMAC tag verification and CBC decryption, if either failed `JWEDecryptionFailed` would be thrown. But a possibly observable difference in timing when padding error would occur while decrypting the ciphertext makes a padding oracle and an adversary might be able to make use of that oracle to decrypt data without knowing the decryption key by issuing on average 128*b calls to the padding oracle (where b is the number of bytes in the ciphertext block). A patch was released which ensures the HMAC tag is verified before performing CBC decryption. The fixed versions are `\u003e=3.11.4`. Users should upgrade to `^3.11.4`."
    },
    {
      "lang": "es",
      "value": "jose-node-esm-runtime es un paquete npm que proporciona una serie de funciones criptogr\u00e1ficas.\u0026#xa0;En versiones anteriores a 3.11.4, el algoritmo de descifrado AES_CBC_HMAC_SHA2 (A128CBC-HS256, A192CBC-HS384, A256CBC-HS512) siempre ejecutaba tanto la comprobaci\u00f3n de etiquetas HMAC como el descifrado CBC, si comet\u00eda un fallo \"JWEDecryptionFailed\" ser\u00eda lanzado.\u0026#xa0;Pero una posible diferencia observable en el tiempo cuando se producir\u00eda un error de relleno al descifrar el texto cifrado crea un padding oracle y un adversario podr\u00eda ser capaz de hacer uso de ese oracle para descifrar datos sin conocer la clave de descifrado emitiendo un promedio de 128*b llamadas al padding oracle (donde b es el n\u00famero de bytes en el bloque de texto cifrado).\u0026#xa0;Se lanz\u00f3 un parche que garantiza que la etiqueta HMAC se verifique antes de llevar a cabo el descifrado CBC.\u0026#xa0;Las versiones corregidas son \"superiores o iguales a 3.11.4\".\u0026#xa0;Los usuarios deben actualizar a \"^ 3.11.4\""
    }
  ],
  "id": "CVE-2021-29445",
  "lastModified": "2026-06-17T03:47:39.353",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 4.3,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 8.6,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.9,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.9,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-04-16T22:15:14.060",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/panva/jose/security/advisories/GHSA-4v4g-726h-xvfv"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Product",
        "Third Party Advisory"
      ],
      "url": "https://www.npmjs.com/package/jose-node-esm-runtime"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/panva/jose/security/advisories/GHSA-4v4g-726h-xvfv"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Product",
        "Third Party Advisory"
      ],
      "url": "https://www.npmjs.com/package/jose-node-esm-runtime"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-203"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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