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CVE-2016-7835

Estado: ModificadaCrítica (9.1)—

Use-after-free vulnerability in H2O allows remote attackers to cause a denial-of-service (DoS) or obtain server certificate private keys and possibly other information.

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)

Dena — H2OH2O Project — H2O

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2016-7835",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.4,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": true,
        "impactScore": 4.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 9.1,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.2,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "vultures@jpcert.or.jp",
      "affectedData": [
        {
          "vendor": "Kazuho Oku",
          "product": "H2O",
          "versions": [
            {
              "status": "affected",
              "version": "version 2.0.4 and earlier"
            }
          ]
        }
      ]
    }
  ],
  "published": "2017-06-09T16:29:01.220",
  "references": [
    {
      "url": "http://www.securityfocus.com/bid/95061",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "vultures@jpcert.or.jp"
    },
    {
      "url": "https://github.com/h2o/h2o/issues/1144",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "source": "vultures@jpcert.or.jp"
    },
    {
      "url": "https://jvn.jp/en/jp/JVN44566208/index.html",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "vultures@jpcert.or.jp"
    },
    {
      "url": "http://www.securityfocus.com/bid/95061",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://github.com/h2o/h2o/issues/1144",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://jvn.jp/en/jp/JVN44566208/index.html",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Use-after-free vulnerability in H2O allows remote attackers to cause a denial-of-service (DoS) or obtain server certificate private keys and possibly other information."
    },
    {
      "lang": "es",
      "value": "La vulnerabilidad use-after-free en H2O permite a atacantes remotos causar una denegación de servicio (DoS) o obtener claves privadas de certificados de servidor y posiblemente otra información."
    }
  ],
  "lastModified": "2026-06-17T00:53:34.747",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:dena:h2o:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "EBA94ADF-2E8B-40D1-ACB9-65840E427EC4",
              "versionEndIncluding": "2.0.4"
            },
            {
              "criteria": "cpe:2.3:a:h2o_project:h2o:2.1.0:beta3:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D6588934-DE9B-44AE-9584-B68EA0CF3515"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "vultures@jpcert.or.jp"
}