CVE-2016-4817
H2O HTTP/2 Use-After-Free Denial of Service and Arbitrary Code Execution Vulnerability
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.
INFO
Published Date :
June 19, 2016, 1:59 a.m.
Last Modified :
April 12, 2025, 10:46 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | MEDIUM | [email protected] | ||||
| CVSS 3.0 | HIGH | [email protected] |
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2016-4817.
| URL | Resource |
|---|---|
| http://jvn.jp/en/jp/JVN87859762/index.html | Vendor Advisory |
| http://jvndb.jvn.jp/jvndb/JVNDB-2016-000091 | Vendor Advisory |
| https://github.com/h2o/h2o/commit/1c0808d580da09fdec5a9a74ff09e103ea058dd4 | |
| https://github.com/h2o/h2o/pull/920 | Vendor Advisory |
| http://jvn.jp/en/jp/JVN87859762/index.html | Vendor Advisory |
| http://jvndb.jvn.jp/jvndb/JVNDB-2016-000091 | Vendor Advisory |
| https://github.com/h2o/h2o/commit/1c0808d580da09fdec5a9a74ff09e103ea058dd4 | |
| https://github.com/h2o/h2o/pull/920 | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2016-4817 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2016-4817
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2016-4817 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2016-4817 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference http://jvn.jp/en/jp/JVN87859762/index.html Added Reference http://jvndb.jvn.jp/jvndb/JVNDB-2016-000091 Added Reference https://github.com/h2o/h2o/commit/1c0808d580da09fdec5a9a74ff09e103ea058dd4 Added Reference https://github.com/h2o/h2o/pull/920 -
CVE Modified by [email protected]
May. 17, 2024
Action Type Old Value New Value -
CPE Deprecation Remap by [email protected]
Apr. 19, 2021
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:h2o_project:h2o:*:beta4:*:*:*:*:*:* versions from (including) 2.0.0 OR *cpe:2.3:a:dena:h2o:*:beta4:*:*:*:*:*:* versions from (including) 2.0.0 -
CPE Deprecation Remap by [email protected]
Apr. 19, 2021
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:h2o_project:h2o:*:*:*:*:*:*:*:* versions from (including) 1.7.2 OR *cpe:2.3:a:dena:h2o:*:*:*:*:*:*:*:* versions from (including) 1.7.2 -
Modified Analysis by [email protected]
Jun. 21, 2016
Action Type Old Value New Value Added Evaluator Description <a href="http://cwe.mitre.org/data/definitions/416.html">CWE-416: Use After Free</a> Added CPE Configuration Configuration 1 OR *cpe:2.3:a:h2o_project:h2o:2.0.0:beta4:*:*:*:*:*:* (and previous) *cpe:2.3:a:h2o_project:h2o:1.7.2:*:*:*:*:*:*:* (and previous) Added CVSS V2 (AV:N/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type http://jvn.jp/en/jp/JVN87859762/index.html No Types Assigned http://jvn.jp/en/jp/JVN87859762/index.html Advisory Changed Reference Type http://jvndb.jvn.jp/jvndb/JVNDB-2016-000091 No Types Assigned http://jvndb.jvn.jp/jvndb/JVNDB-2016-000091 Advisory Changed Reference Type https://github.com/h2o/h2o/pull/920 No Types Assigned https://github.com/h2o/h2o/pull/920 Advisory Added CWE NVD-CWE-Other -
Initial Analysis by [email protected]
Jun. 20, 2016
Action Type Old Value New Value
Vulnerability Scoring Details
Base CVSS Score: 7.5
Base CVSS Score: 5
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
7.96 }} 0.45%
score
0.91699
percentile