CVE-2016-4864

MITRE NVD CVE.ORG JSON API Print: PDF PDF

Summary

CVECVE-2016-4864
StatePUBLISHED
Assignerjpcert
Source PriorityCVE Program / NVD first with legacy fallback
Published2017-05-12 18:29:00 UTC
Updated2025-04-20 01:37:25 UTC
DescriptionH2O 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.

Risk And Classification

Primary CVSS: v3.0 7.5 HIGH from [email protected]

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem Types: CWE-134 | Format String Vulnerability

VersionSourceTypeScoreSeverityVector
3.0[email protected]Primary7.5HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
2.0[email protected]Primary5AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Dena H2o 2.1.0 All All All
Application Dena H2o 2.1.0 beta1 All All
Application Dena H2o All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Kazuho Oku H2O affected versions 2.0.3 and earlier Not specified
CNA Kazuho Oku H2O affected versions 2.1.0-beta2 and earlier Not specified

References

ReferenceSourceLinkTags
Format String Vulnerability (CVE-2016-4864) · Issue #1077 · h2o/h2o · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Patch, Third Party Advisory
JVN#94779084: H2O use of externally-controlled format string af854a3a-2127-422b-91ae-364da2661108 jvn.jp Third Party Advisory, VDB Entry
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

© CVE.report 2026

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report