CVE-2016-4817

7.5 HIGH
Published: June 19, 2016 Modified: May 06, 2026
View on NVD

Description

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://jvn.jp/en/jp/JVN87859762/index.html
Source: vultures@jpcert.or.jp
Vendor Advisory
http://jvndb.jvn.jp/jvndb/JVNDB-2016-000091
Source: vultures@jpcert.or.jp
Vendor Advisory
https://github.com/h2o/h2o/pull/920
Source: vultures@jpcert.or.jp
Vendor Advisory
http://jvn.jp/en/jp/JVN87859762/index.html
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
http://jvndb.jvn.jp/jvndb/JVNDB-2016-000091
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
https://github.com/h2o/h2o/pull/920
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory

8 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.5 / 10.0
EPSS (Exploit Probability)
8.0%
92th percentile
Exploitation Status
Not in CISA KEV

Affected Vendors

dena