{"attribution":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","cve":{"id":"CVE-2016-4817","sourceIdentifier":"vultures@jpcert.or.jp","published":"2016-06-19T01:59:11.903","lastModified":"2026-06-17T00:48:16.380","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"lib/http2/connection.c in H2O before 1.7.3 and 2.x before 2.0.0-beta5 mishandles HTTP/2 disconnection, which allows remote attackers to cause a denial of service (use-after-free and application crash) or possibly execute arbitrary code via a crafted packet."},{"lang":"es","value":"lib/http2/connection.c en H2O en versiones anteriores a 1.7.3 y 2.x en versiones anteriores a 2.0.0-beta5 no maneja correctamente desconexión de HTTP/2, lo que permite a atacantes remotos provocar una denegación de servicio (uso después de liberación de memoria y caída de aplicación) o posiblemente ejecutar código arbitrario a través de un paquete manipulado."}],"affected":[{"source":"vultures@jpcert.or.jp","affectedData":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}]}],"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":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"NVD-CWE-Other"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:dena:h2o:*:*:*:*:*:*:*:*","versionEndIncluding":"1.7.2","matchCriteriaId":"65AFFD5F-6151-478D-B24D-070512BB4CA2"},{"vulnerable":true,"criteria":"cpe:2.3:a:dena:h2o:*:beta4:*:*:*:*:*:*","versionEndIncluding":"2.0.0","matchCriteriaId":"2816C83A-1BB3-4B8A-8899-DD56FA132C0D"}]}]}],"references":[{"url":"http://jvn.jp/en/jp/JVN87859762/index.html","source":"vultures@jpcert.or.jp","tags":["Vendor Advisory"]},{"url":"http://jvndb.jvn.jp/jvndb/JVNDB-2016-000091","source":"vultures@jpcert.or.jp","tags":["Vendor Advisory"]},{"url":"https://github.com/h2o/h2o/commit/1c0808d580da09fdec5a9a74ff09e103ea058dd4","source":"vultures@jpcert.or.jp"},{"url":"https://github.com/h2o/h2o/pull/920","source":"vultures@jpcert.or.jp","tags":["Vendor Advisory"]},{"url":"http://jvn.jp/en/jp/JVN87859762/index.html","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"]},{"url":"http://jvndb.jvn.jp/jvndb/JVNDB-2016-000091","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"]},{"url":"https://github.com/h2o/h2o/commit/1c0808d580da09fdec5a9a74ff09e103ea058dd4","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/h2o/h2o/pull/920","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"]}],"evaluatorComment":"\u003ca href=\"http://cwe.mitre.org/data/definitions/416.html\"\u003eCWE-416: Use After Free\u003c/a\u003e"}}