CVE-2016-4864

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.

CVSS v3 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3 : HIGH

Vector : AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:N/I:N/A:P

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://github.com/h2o/h2o/issues/1077	Patch Third Party Advisory
https://jvn.jp/en/jp/JVN94779084/index.html	Third Party Advisory VDB Entry

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:dena:h2o::::::::
	cpe:2.3:a:dena:h2o:2.1.0:::::::*
	cpe:2.3:a:dena:h2o:2.1.0:beta1::::::

History

No history.

Information

Published : 2017-05-12 18:29

Updated : 2023-12-10 12:01

NVD link : CVE-2016-4864

Mitre link : CVE-2016-4864

CVE.ORG link : CVE-2016-4864

JSON object : View

Products Affected

dena

h2o

CWE

CWE-134

Use of Externally-Controlled Format String

{"id": "CVE-2016-4864", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 5.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "acInsufInfo": true, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV30": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "published": "2017-05-12T18:29:00.437", "references": [{"url": "https://github.com/h2o/h2o/issues/1077", "tags": ["Patch", "Third Party Advisory"], "source": "vultures@jpcert.or.jp"}, {"url": "https://jvn.jp/en/jp/JVN94779084/index.html", "tags": ["Third Party Advisory", "VDB Entry"], "source": "vultures@jpcert.or.jp"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-134"}]}], "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."}], "lastModified": "2019-02-26T16:03:35.057", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:dena:h2o:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9DA5398C-CA21-49CE-937F-8433D8F50C5F", "versionEndIncluding": "2.0.3", "versionStartIncluding": "2.0.0"}, {"criteria": "cpe:2.3:a:dena:h2o:2.1.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E2F367EE-6A00-4040-8678-ECA84E6A7FF8"}, {"criteria": "cpe:2.3:a:dena:h2o:2.1.0:beta1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "339AA268-9EFD-4507-88E2-278EDA75C926"}], "operator": "OR"}]}], "sourceIdentifier": "vultures@jpcert.or.jp"}