fkie_cve-2021-29444
Vulnerability from fkie_nvd
Published
2021-04-16 22:15
Modified
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-browser-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-94hh-pjjg-rwmrThird Party Advisory
security-advisories@github.comhttps://www.npmjs.com/package/jose-browser-runtimeProduct, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/panva/jose/security/advisories/GHSA-94hh-pjjg-rwmrThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.npmjs.com/package/jose-browser-runtimeProduct, Third Party Advisory
Impacted products
Vendor Product Version
jose-node-cjs-runtime_project jose-node-cjs-runtime *


To clipboard 

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  "descriptions": [
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      "lang": "en",
      "value": "jose-browser-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-browser-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 al emitir 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 es comprobada 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-2021-29444",
  "lastModified": "2024-11-21T06:01:06.687",
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        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
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        "source": "nvd@nist.gov",
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  "published": "2021-04-16T22:15:13.953",
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  "vulnStatus": "Modified",
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          "value": "CWE-203"
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      "source": "security-advisories@github.com",
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}


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