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CVE-2012-6422

Estado: ModificadaAlta (9.3)—💥 PoC

The kernel in Samsung Galaxy S2, Galaxy Note 2, MEIZU MX, and possibly other Android devices, when running an Exynos 4210 or 4412 processor, uses weak permissions (0666) for /dev/exynos-mem, which allows attackers to read or write arbitrary physical memory and gain privileges via a crafted application, as demonstrated by ExynosAbuse.

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).

💥 Exploits públicos

Hay código de explotación o plantillas de detección públicos. No es lo mismo que explotación activa confirmada (KEV), pero aumenta el riesgo: parchee con prioridad.

⚠️ Las pruebas de concepto de GitHub no están verificadas: algunas son falsas o contienen malware. No las ejecute nunca fuera de un laboratorio aislado.

Tecnologías afectadas (3)

Meizu — MXSamsung — Galaxy Note 2Samsung — Galaxy S2

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2012-6422",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 9.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2012-12-18T00:55:04.197",
  "references": [
    {
      "url": "http://arstechnica.com/security/2012/12/developer-warns-of-critical-vulnerability-in-many-samsung-smartphones/",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://forum.xda-developers.com/showthread.php?p=35469999",
      "tags": [
        "Exploit"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://forum.xda-developers.com/showthread.php?t=2051290",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://osvdb.org/88467",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://project-voodoo.org/articles/instant-fix-app-for-exynos-mem-abuse-vulnerability-no-root-required-reversible",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.sammobile.com/2012/12/16/major-vulnerability-found-on-exynos-4-devices/",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityweek.com/new-vulnerability-exposed-samsungs-android-devices",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://arstechnica.com/security/2012/12/developer-warns-of-critical-vulnerability-in-many-samsung-smartphones/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
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      "url": "http://forum.xda-developers.com/showthread.php?p=35469999",
      "tags": [
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      "url": "http://forum.xda-developers.com/showthread.php?t=2051290",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "http://osvdb.org/88467",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://project-voodoo.org/articles/instant-fix-app-for-exynos-mem-abuse-vulnerability-no-root-required-reversible",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.sammobile.com/2012/12/16/major-vulnerability-found-on-exynos-4-devices/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityweek.com/new-vulnerability-exposed-samsungs-android-devices",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-264"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The kernel in Samsung Galaxy S2, Galaxy Note 2, MEIZU MX, and possibly other Android devices, when running an Exynos 4210 or 4412 processor, uses weak permissions (0666) for /dev/exynos-mem, which allows attackers to read or write arbitrary physical memory and gain privileges via a crafted application, as demonstrated by ExynosAbuse."
    },
    {
      "lang": "es",
      "value": "El núcleo en Samsung S2 Galaxy, Galaxy Note 2, Meizu MX, y posiblemente en otros dispositivos Android, cuando se ejecuta un procesador Exynos 4210 o 4412, utiliza permisos débiles (0666) para /dev/exynos-mem, que permite a los atacantes leer o escribir en la memoria física arbitraria y obtener privilegios a través de una aplicación manipulada, como se demuestra por ExynosAbuse."
    }
  ],
  "lastModified": "2026-06-16T23:48:04.720",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:meizu:mx:-:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "8EBFA2B5-7276-4C8C-A2B2-FDD69CFBD623"
            },
            {
              "criteria": "cpe:2.3:h:samsung:galaxy_note_2:-:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C11A19CD-FAFE-45ED-A24C-72642C3ED565"
            },
            {
              "criteria": "cpe:2.3:h:samsung:galaxy_s2:-:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "27B05798-6E5E-4DCD-810E-680DEB3BDE97"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}