nvd-json-data-feeds/CVE-2020/CVE-2020-89xx/CVE-2020-8911.json

{
  "id": "CVE-2020-8911",
  "sourceIdentifier": "cve-coordination@google.com",
  "published": "2020-08-11T20:15:13.230",
  "lastModified": "2024-11-21T05:39:40.457",
  "vulnStatus": "Modified",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A padding oracle vulnerability exists in the AWS S3 Crypto SDK for GoLang versions prior to V2. The SDK allows users to encrypt files with AES-CBC without computing a Message Authentication Code (MAC), which then allows an attacker who has write access to the target's S3 bucket and can observe whether or not an endpoint with access to the key can decrypt a file, they can reconstruct the plaintext with (on average) 128*length (plaintext) queries to the endpoint, by exploiting CBC's ability to manipulate the bytes of the next block and PKCS5 padding errors. It is recommended to update your SDK to V2 or later, and re-encrypt your files."
    },
    {
      "lang": "es",
      "value": "Se presenta una vulnerabilidad de tipo padding oracle en AWS S3 Crypto SDK para GoLang versiones anteriores a la versi\u00f3n V2. El SDK permite a los usuarios cifrar archivos con AES-CBC sin calcular un Message Authentication Code (MAC), que entonces permite a un atacante que tiene acceso de escritura al dep\u00f3sito S3 del objetivo y puede observar si un endpoint con acceso a la clave puede descifrar un archivo, pueden reconstruir el texto plano con (en promedio) consultas 128*length (en texto sin formato) al endpoint, aprovechando la capacidad de CBC para manipular los bytes del siguiente bloque y los errores de relleno de PKCS5. Se recomienda actualizar su SDK a la versi\u00f3n V2 o posterior y volver a cifrar sus archivos"
    }
  ],
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          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "CHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
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