nvd-json-data-feeds/CVE-2020/CVE-2020-89xx/CVE-2020-8912.json

{
  "id": "CVE-2020-8912",
  "sourceIdentifier": "cve-coordination@google.com",
  "published": "2020-08-11T20:15:13.323",
  "lastModified": "2024-11-21T05:39:40.560",
  "vulnStatus": "Modified",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability in the in-band key negotiation exists in the AWS S3 Crypto SDK for GoLang versions prior to V2. An attacker with write access to the targeted bucket can change the encryption algorithm of an object in the bucket, which can then allow them to change AES-GCM to AES-CTR. Using this in combination with a decryption oracle can reveal the authentication key used by AES-GCM as decrypting the GMAC tag leaves the authentication key recoverable as an algebraic equation. It is recommended to update your SDK to V2 or later, and re-encrypt your files."
    },
    {
      "lang": "es",
      "value": "Se presenta una vulnerabilidad en la negociaci\u00f3n de claves in-band en AWS S3 Crypto SDK para GoLang versiones anteriores a la versi\u00f3n V2. Un atacante con acceso de escritura al dep\u00f3sito de destino puede cambiar el algoritmo de cifrado de un objeto en el dep\u00f3sito, lo que luego puede permitirle cambiar AES-GCM a AES-CTR. El uso de esto en combinaci\u00f3n con un or\u00e1culo de descifrado puede revelar la clave de autenticaci\u00f3n usada por AES-GCM ya que descifrar la etiqueta GMAC deja la clave de autenticaci\u00f3n recuperable como una ecuaci\u00f3n algebraica. Se recomienda actualizar su SDK a la versi\u00f3n V2 o posterior y volver a cifrar sus archivos"
    }
  ],
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          "baseScore": 2.5,
          "baseSeverity": "LOW",
          "attackVector": "LOCAL",
          "attackComplexity": "HIGH",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE"
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        "exploitabilityScore": 1.0,
        "impactScore": 1.4
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    ],
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          "accessComplexity": "LOW",
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        },
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        "obtainAllPrivilege": false,
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        "obtainOtherPrivilege": false,
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      }
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  },
  "weaknesses": [
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  "references": [
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      "url": "https://aws.amazon.com/blogs/developer/updates-to-the-amazon-s3-encryption-client/?s=09",
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}