FKIE_CVE-2021-29443

Vulnerability from fkie_nvd - Published: 2021-04-16 18:15 - Updated: 2024-11-21 06:01
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 is an npm library providing a number of cryptographic operations. In vulnerable versions 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. 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). All major release versions have had a patch released which ensures the HMAC tag is verified before performing CBC decryption. The fixed versions are `^1.28.1 || ^2.0.5 || >=3.11.4`. Users should upgrade their v1.x dependency to ^1.28.1, their v2.x dependency to ^2.0.5, and their v3.x dependency to ^3.11.4. Thanks to Jason from Microsoft Vulnerability Research (MSVR) for bringing this up and Eva Sarafianou (@esarafianou) for helping to score this advisory.
References
security-advisories@github.comhttps://github.com/panva/jose/security/advisories/GHSA-58f5-hfqc-jgchPatch, Third Party Advisory
security-advisories@github.comhttps://www.npmjs.com/package/joseThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/panva/jose/security/advisories/GHSA-58f5-hfqc-jgchPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.npmjs.com/package/joseThird Party Advisory
Impacted products
Vendor Product Version
jose_project jose *
jose_project jose *
jose_project jose *
To clipboard 

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    {
      "nodes": [
        {
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              "criteria": "cpe:2.3:a:jose_project:jose:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "B93ABC92-DD84-439F-A9B2-848231CAB2AE",
              "versionEndExcluding": "1.28.1",
              "versionStartIncluding": "1.0.0",
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "jose is an npm library providing a number of cryptographic operations. In vulnerable versions 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. 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). All major release versions have had a patch released which ensures the HMAC tag is verified before performing CBC decryption. The fixed versions are `^1.28.1 || ^2.0.5 || \u003e=3.11.4`. Users should upgrade their v1.x dependency to ^1.28.1, their v2.x dependency to ^2.0.5, and their v3.x dependency to ^3.11.4. Thanks to Jason from Microsoft Vulnerability Research (MSVR) for bringing this up and Eva Sarafianou (@esarafianou) for helping to score this advisory."
    },
    {
      "lang": "es",
      "value": "jose es una biblioteca npm que proporciona una serie de operaciones criptogr\u00e1ficas.\u0026#xa0;En versiones vulnerables el algoritmo AES_CBC_HMAC_SHA2 (A128CBC-HS256, A192CBC-HS384, A256CBC-HS512), el descifrado siempre ejecutaba tanto la verificaci\u00f3n de etiquetas HMAC como el descifrado CBC, si cualquiera de los dos presentaba un fallo, \"JWEDecryptionFailed\" ser\u00eda lanzado.\u0026#xa0;Una posible diferencia observable en el tiempo cuando un error de padding podr\u00eda ocurrir 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 al emitir un promedio de 128*b llamadas padding oracle (donde b es el n\u00famero de bytes en el bloque de texto cifrado).\u0026#xa0;Todas las versiones de lanzamiento principales han recibido un parche que garantiza que la etiqueta HMAC se verifique antes de llevar a cabo el descifrado CBC.\u0026#xa0;Las versiones fijas son ^1.28.1 || ^2.0.5 || superiores o iguales a 3.11.4.\u0026#xa0;Los usuarios deben actualizar su dependencia versiones v1.x hasta ^1.28.1, su dependencia versiones v2.x hasta ^ 2.0.5 y su dependencia versiones v3.x hasta ^3.11.4.\u0026#xa0;Gracias a Jason de Microsoft Vulnerability Research (MSVR) por mencionar este tema y a Eva Sarafianou (@esarafianou) por ayudar a calificar este aviso"
    }
  ],
  "id": "CVE-2021-29443",
  "lastModified": "2024-11-21T06:01:06.550",
  "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": [
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        "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"
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        "impactScore": 3.6,
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        "type": "Secondary"
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          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
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          "baseScore": 5.9,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
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          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
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        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  },
  "published": "2021-04-16T18:15:13.590",
  "references": [
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      "tags": [
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      "tags": [
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  "vulnStatus": "Modified",
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      "source": "nvd@nist.gov",
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    }
  ]
}


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