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CVE-2012-6656

Estado: ModificadaMedia (5)—

iconvdata/ibm930.c in GNU C Library (aka glibc) before 2.16 allows context-dependent attackers to cause a denial of service (out-of-bounds read) via a multibyte character value of "0xffff" to the iconv function when converting IBM930 encoded data to UTF-8.

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 (3)

Canonical — Ubuntu LinuxDebian — Debian LinuxGNU — Glibc

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2012-6656",
  "cveTags": [],
  "metrics": {
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
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          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
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      "affectedData": [
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          "versions": [
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              "status": "affected",
              "version": "n/a"
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  ],
  "published": "2014-12-05T16:59:00.067",
  "references": [
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      "url": "http://www.debian.org/security/2015/dsa-3142",
      "tags": [
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      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "iconvdata/ibm930.c in GNU C Library (aka glibc) before 2.16 allows context-dependent attackers to cause a denial of service (out-of-bounds read) via a multibyte character value of \"0xffff\" to the iconv function when converting IBM930 encoded data to UTF-8."
    },
    {
      "lang": "es",
      "value": "iconvdata/ibm930.c en GNU C Library (también conocido como glibc) anterior a 2.16 permite a atacantes dependientes de contexto causar una denegación de servicio (lectura fuera de rango) a través de un valor de caracteres de multibytes de '0xffff' en la función iconv cuando convierte datos codificados de IBM930 a UTF-8."
    }
  ],
  "lastModified": "2026-06-16T23:48:33.827",
  "configurations": [
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