« Volver al listado

CVE-2016-2427

Estado: ModificadaMedia (5.5)—

The AES-GCM specification in RFC 5084, as used in Android 5.x and 6.x, recommends 12 octets for the aes-ICVlen parameter field, which might make it easier for attackers to defeat a cryptographic protection mechanism and discover an authentication key via a crafted application, aka internal bug 26234568. NOTE: The vendor disputes the existence of this potential issue in Android, stating "This CVE was raised in error: it referred to the authentication tag size in GCM, whose default according to ASN.1 encoding (12 bytes) can lead to vulnerabilities. After careful consideration, it was decided that the insecure default value of 12 bytes was a default only for the encoding and not default anywhere else in Android, and hence no vulnerability existed.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (2)

Bouncycastle — Bc-javaGoogle — Android

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2016-2427",
  "cveTags": [
    {
      "tags": [
        "disputed"
      ],
      "sourceIdentifier": "security@android.com"
    }
  ],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "security@android.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2016-04-18T00:59:33.383",
  "references": [
    {
      "url": "http://source.android.com/security/bulletin/2016-04-02.html",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security@android.com"
    },
    {
      "url": "http://source.android.com/security/bulletin/2016-04-02.html",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The AES-GCM specification in RFC 5084, as used in Android 5.x and 6.x, recommends 12 octets for the aes-ICVlen parameter field, which might make it easier for attackers to defeat a cryptographic protection mechanism and discover an authentication key via a crafted application, aka internal bug 26234568.  NOTE: The vendor disputes the existence of this potential issue in Android, stating \"This CVE was raised in error: it referred to the authentication tag size in GCM, whose default according to ASN.1 encoding (12 bytes) can lead to vulnerabilities. After careful consideration, it was decided that the insecure default value of 12 bytes was a default only for the encoding and not default anywhere else in Android, and hence no vulnerability existed."
    },
    {
      "lang": "es",
      "value": "**DISPUTADA** La especificación AES-GCM en RFC 5084,como es utilizado en Android 5.x y 6.x, recomienda 12 octetos para el campo de parámetro aes-ICVlen, lo que podría facilitar a atacantes derrotar el mecanismo de protección criptográfico y descubrir una clave de autenticación a través de una aplicación manipulada, también conocido como error interno 26234568. NOTA: El vendedor disputa la existencia de este potencial problema en Android, indicando que \"Esta CVE fue levantada por error: se refería al tamaño de la etiqueta de autenticación en GCM, cuyo defecto de acuerdo con la codificación ASN.1 (12 bytes) puede llevar a vulnerabilidades. Después de una cuidadosa consideración, se decidió que el valor del defecto de seguridad de 12 bytes era sólo un fallo para la codificación y no por defecto en cualquier otro lugar en Android, y por lo tanto no existía vulnerabilidad.\""
    }
  ],
  "lastModified": "2026-06-17T00:44:03.030",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:bouncycastle:bc-java:1.54:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F576A43C-711B-43A1-B0B7-44F3101F00A4"
            }
          ],
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:google:android:5.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "7C4E6353-B77A-464F-B7DE-932704003B33"
            },
            {
              "criteria": "cpe:2.3:o:google:android:5.0.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "77125688-2CCA-4990-ABB2-551D47CB0CDD"
            },
            {
              "criteria": "cpe:2.3:o:google:android:5.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E7A8EC00-266C-409B-AD43-18E8DFCD6FE3"
            },
            {
              "criteria": "cpe:2.3:o:google:android:5.1.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B846C63A-7261-481E-B4A4-0D8C79E0D8A7"
            },
            {
              "criteria": "cpe:2.3:o:google:android:6.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E70C6D8D-C9C3-4D92-8DFC-71F59E068295"
            },
            {
              "criteria": "cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "691FA41B-C2CE-413F-ABB1-0B22CB322807"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security@android.com"
}