Vulnerability-Lookup

FKIE_CVE-2016-4864

Vulnerability from fkie_nvd - Published: 2017-05-12 18:29 - Updated: 2026-06-17 00:48

Severity

7.5 (High) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

H2O versions 2.0.3 and earlier and 2.1.0-beta2 and earlier allows remote attackers to cause a denial-of-service (DoS) via format string specifiers in a template file via fastcgi, mruby, proxy, redirect or reproxy.

References

URL	Tags
vultures@jpcert.or.jp	https://github.com/h2o/h2o/issues/1077	Patch, Third Party Advisory
vultures@jpcert.or.jp	https://jvn.jp/en/jp/JVN94779084/index.html	Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108	https://github.com/h2o/h2o/issues/1077	Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://jvn.jp/en/jp/JVN94779084/index.html	Third Party Advisory, VDB Entry

Impacted products

Vendor	Product	Version
dena	h2o	*
dena	h2o	2.1.0
dena	h2o	2.1.0

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "H2O",
          "vendor": "Kazuho Oku",
          "versions": [
            {
              "status": "affected",
              "version": "versions 2.0.3 and earlier"
            },
            {
              "status": "affected",
              "version": "versions 2.1.0-beta2 and earlier"
            }
          ]
        }
      ],
      "source": "vultures@jpcert.or.jp"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:dena:h2o:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "9DA5398C-CA21-49CE-937F-8433D8F50C5F",
              "versionEndIncluding": "2.0.3",
              "versionStartIncluding": "2.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:dena:h2o:2.1.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "E2F367EE-6A00-4040-8678-ECA84E6A7FF8",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:dena:h2o:2.1.0:beta1:*:*:*:*:*:*",
              "matchCriteriaId": "339AA268-9EFD-4507-88E2-278EDA75C926",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "H2O versions 2.0.3 and earlier and 2.1.0-beta2 and earlier allows remote attackers to cause a denial-of-service (DoS) via format string specifiers in a template file via fastcgi, mruby, proxy, redirect or reproxy."
    },
    {
      "lang": "es",
      "value": "H2O versiones 2.0.3 y anteriores y 2.1.0-beta2 y anteriores, permite a atacantes remotos causar una denegaci\u00f3n de servicio (DoS) a trav\u00e9s de especificadores de cadena de formato en un fichero de plantilla a trav\u00e9s de fastcgi, mruby, proxy, redirect o reproxy."
    }
  ],
  "id": "CVE-2016-4864",
  "lastModified": "2026-06-17T00:48:21.337",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": true,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2017-05-12T18:29:00.437",
  "references": [
    {
      "source": "vultures@jpcert.or.jp",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/h2o/h2o/issues/1077"
    },
    {
      "source": "vultures@jpcert.or.jp",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "https://jvn.jp/en/jp/JVN94779084/index.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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        "Third Party Advisory"
      ],
      "url": "https://github.com/h2o/h2o/issues/1077"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "https://jvn.jp/en/jp/JVN94779084/index.html"
    }
  ],
  "sourceIdentifier": "vultures@jpcert.or.jp",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-134"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2016-4864 (GCVE-0-2016-4864)

Vulnerability from cvelistv5 – Published: 2017-05-12 18:00 – Updated: 2024-08-06 00:46

Summary

Severity

No CVSS data available.

CWE

Format String Vulnerability

Assigner

jpcert jpcert root

References

2 references

URL	Tags
https://github.com/h2o/h2o/issues/1077	x_refsource_CONFIRM
https://jvn.jp/en/jp/JVN94779084/index.html	third-party-advisoryx_refsource_JVN

Impacted products

1 product

Vendor	Product	Version
Kazuho Oku	H2O	Affected: versions 2.0.3 and earlier Affected: versions 2.1.0-beta2 and earlier

Date Public

2016-09-15 00:00

Show details on NVD website

JSON

To clipboard

{
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      {
        "providerMetadata": {
          "dateUpdated": "2024-08-06T00:46:38.474Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        },
        "references": [
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            ],
            "url": "https://jvn.jp/en/jp/JVN94779084/index.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "H2O",
          "vendor": "Kazuho Oku",
          "versions": [
            {
              "status": "affected",
              "version": "versions 2.0.3 and earlier"
            },
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              "version": "versions 2.1.0-beta2 and earlier"
            }
          ]
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        }
      ],
      "problemTypes": [
        {
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            {
              "description": "Format String Vulnerability",
              "lang": "en",
              "type": "text"
            }
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        "orgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
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      },
      "references": [
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            "x_refsource_JVN"
          ],
          "url": "https://jvn.jp/en/jp/JVN94779084/index.html"
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      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
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            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
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                      "version": {
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                          {
                            "version_value": "versions 2.0.3 and earlier"
                          },
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    "state": "PUBLISHED"
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.