CVE-2016-4817

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Summary

CVECVE-2016-4817
StatePUBLISHED
Assignerjpcert
Source PriorityCVE Program / NVD first with legacy fallback
Published2016-06-19 01:59:11 UTC
Updated2026-05-06 22:30:45 UTC
Descriptionlib/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.

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: NVD-CWE-Other | n/a

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 All All All All
Application Dena H2o All beta4 All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
jvndb.jvn.jp/jvndb/JVNDB-2016-000091 af854a3a-2127-422b-91ae-364da2661108 jvndb.jvn.jp Vendor Advisory
h2: use after free on premature connection close #920 · h2o/h2o@1c0808d · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com
fix use after free on premature connection close (CVE-2016-4817) by kazuho · Pull Request #920 · h2o/h2o · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Vendor Advisory
JVN#87859762: H2O use-after-free vulnerability af854a3a-2127-422b-91ae-364da2661108 jvn.jp Vendor Advisory
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