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CVE-2014-4721

Estado: ModificadaBaja (2.6)—
Gravedad2.6Baja · CVSS 2.0
Probabilidad de explotación5.87 %mayor que el 93 % de las CVE
Explotación activaNono figura en el catálogo de CISA
Exploit públicoNo conocidosin código público localizado

La implementación phpinfo en ext/standard/info.c en PHP anterior a 5.4.30 y 5.5.x anterior a 5.5.14 no asegura el uso del tipo de datos de cadenas para las variables PHP_AUTH_PW, PHP_AUTH_TYPE, PHP_AUTH_USER y PHP_SELF, lo que podría permitir a atacantes dependientes de contexto obtener información sensible de la memoria de proceso mediante el uso de el tipo de datos de enteros con valores manipulados, relacionado con una vulnerabilidad de 'confusión de tipo', tal y como fue demostrado mediante la lectura de una clave SSL privada en un entorno de alojamiento web de Apache HTTP Server con mod_ssl y un 5.3.x mod_php de PHP.

CVSS

Puntuación base
2.6
Versión
2.0
Vector
AV:N/AC:H/Au:N/C:P/I:N/A:N

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días
5.87 %
Percentil entre todas las CVEs puntuadas
93
Fecha de la puntuación
21/10/2026

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)

Debian — Debian LinuxPHP — PHP

CWE

Referencias

Mostrar las 28 referencias

JSON original (NVD)

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{
  "id": "CVE-2014-4721",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 2.6,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:H/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "HIGH",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 4.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "security@debian.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2014-07-06T23:55:02.707",
  "references": [
    {
      "url": "http://lists.opensuse.org/opensuse-updates/2014-07/msg00035.html",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
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    },
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      "tags": [
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    },
    {
      "url": "http://rhn.redhat.com/errata/RHSA-2014-1765.html",
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      "source": "security@debian.org"
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    {
      "url": "http://rhn.redhat.com/errata/RHSA-2014-1766.html",
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    },
    {
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    },
    {
      "url": "http://secunia.com/advisories/59794",
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    },
    {
      "url": "http://www.oracle.com/technetwork/topics/security/bulletinjan2015-2370101.html",
      "tags": [
        "Third Party Advisory"
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      "source": "security@debian.org"
    },
    {
      "url": "http://www.php.net/ChangeLog-5.php",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security@debian.org"
    },
    {
      "url": "https://bugs.php.net/bug.php?id=67498",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security@debian.org"
    },
    {
      "url": "https://www.sektioneins.de/en/blog/14-07-04-phpinfo-infoleak.html",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "security@debian.org"
    },
    {
      "url": "http://lists.opensuse.org/opensuse-updates/2014-07/msg00035.html",
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      "tags": [
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      ],
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    {
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    },
    {
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      "tags": [
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      ],
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    },
    {
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      "tags": [
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    },
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      "tags": [
        "Third Party Advisory"
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    },
    {
      "url": "http://www-01.ibm.com/support/docview.wss?uid=swg21683486",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
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      "url": "http://www.debian.org/security/2014/dsa-2974",
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    },
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    {
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    },
    {
      "url": "https://bugs.php.net/bug.php?id=67498",
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    {
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        "Third Party Advisory"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The phpinfo implementation in ext/standard/info.c in PHP before 5.4.30 and 5.5.x before 5.5.14 does not ensure use of the string data type for the PHP_AUTH_PW, PHP_AUTH_TYPE, PHP_AUTH_USER, and PHP_SELF variables, which might allow context-dependent attackers to obtain sensitive information from process memory by using the integer data type with crafted values, related to a \"type confusion\" vulnerability, as demonstrated by reading a private SSL key in an Apache HTTP Server web-hosting environment with mod_ssl and a PHP 5.3.x mod_php."
    },
    {
      "lang": "es",
      "value": "La implementación phpinfo en ext/standard/info.c en PHP anterior a 5.4.30 y 5.5.x anterior a 5.5.14 no asegura el uso del tipo de datos de cadenas para las variables PHP_AUTH_PW, PHP_AUTH_TYPE, PHP_AUTH_USER y PHP_SELF, lo que podría permitir a atacantes dependientes de contexto obtener información sensible de la memoria de proceso mediante el uso de el tipo de datos de enteros con valores manipulados, relacionado con una vulnerabilidad de 'confusión de tipo', tal y como fue demostrado mediante la lectura de una clave SSL privada en un entorno de alojamiento web de Apache HTTP Server con mod_ssl y un 5.3.x mod_php de PHP."
    }
  ],
  "lastModified": "2026-06-17T00:10:30.503",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B61C8E39-DB8E-4636-91E5-2473B0915FBD",
              "versionEndExcluding": "5.3.29",
              "versionStartIncluding": "5.3.0"
            },
            {
              "criteria": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "AD052020-AA37-4F49-A0FE-EA99616C12C7",
              "versionEndExcluding": "5.4.30",
              "versionStartIncluding": "5.4.0"
            },
            {
              "criteria": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "4ADC6057-9D35-4D87-B15D-F6F52A283464",
              "versionEndExcluding": "5.5.14",
              "versionStartIncluding": "5.5.0"
            }
          ],
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "16F59A04-14CF-49E2-9973-645477EA09DA"
            },
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security@debian.org"
}