CVE-2015-6834

Estado: ModificadaCrítica (9.8)—Exploit

Gravedad9.8Crítica · CVSS 3.0

Probabilidad de explotación47 %mayor que el 99 % de las CVE

Explotación activaNono figura en el catálogo de CISA

Exploit públicoDisponiblePublicado en Exploit-DB

Múltiples vulnerabilidades de uso después de liberación de memoria en PHP en versiones anteriores a 5.4.45, 5.5.x en versiones anteriores a 5.5.29 y 5.6.x en versiones anteriores a 5.6.13 permite a atacantes remotos ejecutar código arbitrario a través de vectores relacionados con (1) la interfaz Serializable, (2) la clase SplObjectStorage y (3) la clase SplDoublyLinkedList, que no es correctamente manejado durante la deserialización.

CVSS

Puntuación base: 9.8
Versión: 3.0
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 47 %
Percentil entre todas las CVEs puntuadas: 99
Fecha de la puntuación: 20/10/2026

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).

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.

Publicado en Exploit-DB · PHP 5.4/5.5/5.6 - SplDoublyLinkedList 'Unserialize()' Use-After-Free (9/9/2015)
Publicado en Exploit-DB · PHP 5.4/5.5/5.6 - SplObjectStorage 'Unserialize()' Use-After-Free (9/9/2015)

Tecnologías afectadas (1)

PHP — PHP

CWE

NVD-CWE-Other

Referencias

Mostrar las 16 referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2015-6834",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security@opentext.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2016-05-16T10:59:18.427",
  "references": [
    {
      "url": "http://php.net/ChangeLog-5.php",
      "source": "security@opentext.com"
    },
    {
      "url": "http://www.debian.org/security/2015/dsa-3358",
      "source": "security@opentext.com"
    },
    {
      "url": "http://www.securityfocus.com/bid/76649",
      "source": "security@opentext.com"
    },
    {
      "url": "http://www.securitytracker.com/id/1033548",
      "source": "security@opentext.com"
    },
    {
      "url": "https://bugs.php.net/bug.php?id=70172",
      "source": "security@opentext.com"
    },
    {
      "url": "https://bugs.php.net/bug.php?id=70365",
      "source": "security@opentext.com"
    },
    {
      "url": "https://bugs.php.net/bug.php?id=70366",
      "source": "security@opentext.com"
    },
    {
      "url": "https://security.gentoo.org/glsa/201606-10",
      "source": "security@opentext.com"
    },
    {
      "url": "http://php.net/ChangeLog-5.php",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.debian.org/security/2015/dsa-3358",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/76649",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securitytracker.com/id/1033548",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://bugs.php.net/bug.php?id=70172",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://bugs.php.net/bug.php?id=70365",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://bugs.php.net/bug.php?id=70366",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://security.gentoo.org/glsa/201606-10",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Multiple use-after-free vulnerabilities in PHP before 5.4.45, 5.5.x before 5.5.29, and 5.6.x before 5.6.13 allow remote attackers to execute arbitrary code via vectors related to (1) the Serializable interface, (2) the SplObjectStorage class, and (3) the SplDoublyLinkedList class, which are mishandled during unserialization."
    },
    {
      "lang": "es",
      "value": "Múltiples vulnerabilidades de uso después de liberación de memoria en PHP en versiones anteriores a 5.4.45, 5.5.x en versiones anteriores a 5.5.29 y 5.6.x en versiones anteriores a 5.6.13 permite a atacantes remotos ejecutar código arbitrario a través de vectores relacionados con (1) la interfaz Serializable, (2) la clase SplObjectStorage y (3) la clase SplDoublyLinkedList, que no es correctamente manejado durante la deserialización."
    }
  ],
  "lastModified": "2026-06-17T00:31:30.167",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "2382042D-E28D-480C-9504-AC073E8A1C6C",
              "versionEndIncluding": "5.4.44"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.5.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "9F6D9B19-E64D-4BED-9194-17460CE19E6F"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.5.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F644EA6C-50C6-4A1C-A4AC-287AA9477B46"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.5.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "4DD47F30-74F5-48E8-8657-C2373FE2BD22"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.5.3:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "0C09527B-6B47-41F8-BDE6-01C47E452286"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.5.4:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "2E454D87-23CB-4D7F-90FE-942EE54D661F"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.5.5:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "1031E646-F2CF-4A3E-8E6A-5D4BC950BEDA"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.5.6:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "130E50C1-D209-4CFF-9399-69D561340FBB"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.5.7:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C1F29948-9417-460B-8B04-D91AE4E8B423"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.5.8:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A37D00C1-4F41-4400-9CE4-8E8BAA3E4142"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.5.9:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "093D08B7-CC3C-4616-8697-F15B253A7D9A"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.5.10:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E9CD8FEE-DE7B-47CB-9985-4092BFA071D0"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.5.11:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A30B2D9E-F289-43C9-BFBC-1CEF284A417E"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.5.12:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "FE41CFDF-8ECD-41C1-94A7-5AFD42C5DDEA"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.5.13:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "6AEAC9BA-AF82-4345-839C-D339DCB962A7"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.5.14:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "1EFE682F-52E3-48EC-A993-F522FC29712F"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.5.15:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "840EE3AC-5293-4F33-9E2C-96A0A2534B02"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.5.16:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "1C0FC407-96DB-425E-BB57-7A5BA839C37F"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.5.17:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D3839C81-3DAB-4E1D-9D95-BEFFD491F43D"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.5.18:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "AC63A449-5D92-4F5F-8186-B58FFFBA54FE"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.5.19:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F18236F6-2065-4A6A-93E7-FD90E650C689"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.5.20:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "DEFBA84A-A4E4-438B-B9B5-8549809DCECC"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.5.21:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "146D3DC9-50F4-430B-B321-68ECE78879A7"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.5.22:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "1D5A7CA6-7653-46C5-8DF7-95584BF7A879"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.5.23:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C5BA8300-2F4D-4C1E-8CCE-F45E8F3547A0"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.5.24:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "59A42F02-F363-4C13-BE83-19F757B84455"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.5.25:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "423ECD5F-5611-4D9A-8BE8-E4DC1527AF58"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.5.26:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "44FE4648-22C5-44A6-A6DF-8B235EB7DEF5"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.5.27:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "23006CC4-85FB-48AF-8F3A-97BC3FD7FAF6"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.5.28:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D6393D02-3968-4B0F-A2DE-61442E95DB32"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.6.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "CE65D0D4-CB56-4946-AB44-2EF554602A96"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.6.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F1F13E2D-A8F7-4B74-8D03-7905C81672C9"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.6.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "AE18933A-5FE6-41C7-B1B6-DA3E762C3FB6"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.6.3:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "9AE1289F-03A6-4621-B387-5F5ADAC4AE92"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.6.4:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "383697F5-D29E-475A-84F3-46B54A928889"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.6.5:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "786ED182-5D71-4197-9196-12AB5CF05F85"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.6.6:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "BF90980D-74AD-44AA-A7C5-A0B294CCE4F8"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.6.7:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "48D6B69C-8F27-4F4C-B953-67A7F9C2FBA5"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.6.8:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B53DC0C3-EA19-4465-B65A-BC7CDB10D8BF"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.6.9:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "BEA4DFC1-6C0C-42FB-9F47-E3E1AA9E47E0"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.6.10:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D904E21A-4B3B-4D96-850C-0C0315F14E6D"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.6.11:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C7CEF6D7-8966-45E7-BEBB-12055F5898C6"
            },
            {
              "criteria": "cpe:2.3:a:php:php:5.6.12:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "171C1035-414C-4F3A-90F4-1A8ED26E3346"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "evaluatorComment": "<a href=\"http://cwe.mitre.org/data/definitions/502.html\">CWE-502: Deserialization of Untrusted Data</a>",
  "sourceIdentifier": "security@opentext.com"
}