GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

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

Vulnerability from cvelistv5 – Published: 2017-05-12 18:00 – Updated: 2024-08-06 00:46
VLAI
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.
CWE
  • Format String Vulnerability
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
Vendor Product Version CPE status
Kazuho Oku H2O Affected: versions 2.0.3 and earlier
Affected: versions 2.1.0-beta2 and earlier
guessed Create a notification for this product.
Date Public
2016-09-15 00:00
Show details on NVD website

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-06T00:46:38.474Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/h2o/h2o/issues/1077"
          },
          {
            "name": "JVN#94779084",
            "tags": [
              "third-party-advisory",
              "x_refsource_JVN",
              "x_transferred"
            ],
            "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"
            },
            {
              "status": "affected",
              "version": "versions 2.1.0-beta2 and earlier"
            }
          ]
        }
      ],
      "datePublic": "2016-09-15T00:00:00.000Z",
      "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."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Format String Vulnerability",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2017-05-12T17:57:01.000Z",
        "orgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
        "shortName": "jpcert"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/h2o/h2o/issues/1077"
        },
        {
          "name": "JVN#94779084",
          "tags": [
            "third-party-advisory",
            "x_refsource_JVN"
          ],
          "url": "https://jvn.jp/en/jp/JVN94779084/index.html"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "vultures@jpcert.or.jp",
          "ID": "CVE-2016-4864",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "H2O",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "versions 2.0.3 and earlier"
                          },
                          {
                            "version_value": "versions 2.1.0-beta2 and earlier"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Kazuho Oku"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "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."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "Format String Vulnerability"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/h2o/h2o/issues/1077",
              "refsource": "CONFIRM",
              "url": "https://github.com/h2o/h2o/issues/1077"
            },
            {
              "name": "JVN#94779084",
              "refsource": "JVN",
              "url": "https://jvn.jp/en/jp/JVN94779084/index.html"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
    "assignerShortName": "jpcert",
    "cveId": "CVE-2016-4864",
    "datePublished": "2017-05-12T18:00:00.000Z",
    "dateReserved": "2016-05-17T00:00:00.000Z",
    "dateUpdated": "2024-08-06T00:46:38.474Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2016-4864",
      "date": "2026-09-16",
      "epss": "0.01802",
      "percentile": "0.774"
    },
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:dena:h2o:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"2.0.0\", \"versionEndIncluding\": \"2.0.3\", \"matchCriteriaId\": \"9DA5398C-CA21-49CE-937F-8433D8F50C5F\"}, {\"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\"}]}]}]",
      "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": "2024-11-21T02:53:08.160",
      "metrics": "{\"cvssMetricV30\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.0\", \"vectorString\": \"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\", \"baseScore\": 7.5, \"baseSeverity\": \"HIGH\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 3.9, \"impactScore\": 3.6}], \"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:N/AC:L/Au:N/C:N/I:N/A:P\", \"baseScore\": 5.0, \"accessVector\": \"NETWORK\", \"accessComplexity\": \"LOW\", \"authentication\": \"NONE\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"PARTIAL\"}, \"baseSeverity\": \"MEDIUM\", \"exploitabilityScore\": 10.0, \"impactScore\": 2.9, \"acInsufInfo\": true, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": false}]}",
      "published": "2017-05-12T18:29:00.437",
      "references": "[{\"url\": \"https://github.com/h2o/h2o/issues/1077\", \"source\": \"vultures@jpcert.or.jp\", \"tags\": [\"Patch\", \"Third Party Advisory\"]}, {\"url\": \"https://jvn.jp/en/jp/JVN94779084/index.html\", \"source\": \"vultures@jpcert.or.jp\", \"tags\": [\"Third Party Advisory\", \"VDB Entry\"]}, {\"url\": \"https://github.com/h2o/h2o/issues/1077\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\", \"Third Party Advisory\"]}, {\"url\": \"https://jvn.jp/en/jp/JVN94779084/index.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\", \"VDB Entry\"]}]",
      "sourceIdentifier": "vultures@jpcert.or.jp",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-134\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2016-4864\",\"sourceIdentifier\":\"vultures@jpcert.or.jp\",\"published\":\"2017-05-12T18:29:00.437\",\"lastModified\":\"2026-05-13T00:24:29.033\",\"vulnStatus\":\"Modified\",\"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.\"}],\"metrics\":{\"cvssMetricV30\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.0\",\"vectorString\":\"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:N/I:N/A:P\",\"baseScore\":5.0,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":10.0,\"impactScore\":2.9,\"acInsufInfo\":true,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-134\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:dena:h2o:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.0.0\",\"versionEndIncluding\":\"2.0.3\",\"matchCriteriaId\":\"9DA5398C-CA21-49CE-937F-8433D8F50C5F\"},{\"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\"}]}]}],\"references\":[{\"url\":\"https://github.com/h2o/h2o/issues/1077\",\"source\":\"vultures@jpcert.or.jp\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://jvn.jp/en/jp/JVN94779084/index.html\",\"source\":\"vultures@jpcert.or.jp\",\"tags\":[\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"https://github.com/h2o/h2o/issues/1077\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://jvn.jp/en/jp/JVN94779084/index.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\",\"VDB Entry\"]}]}}",
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2025-08-26T00:04:56Z",
      "cve": "CVE-2016-4864",
      "id": "CVE-2016-4864",
      "initial_release_date": "2023-02-15T05:02:16Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2016-4864",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2016-4864.json",
      "version": "5"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.

Loading…

Detection rules are retrieved from Rulezet.

Loading…

Loading…

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.


Loading…