7.5
HIGH
CVE-2016-6817
Apache Tomcat HTTP/2 Header Parser Infinite Loop DoS Vulnerability
Description

The HTTP/2 header parser in Apache Tomcat 9.0.0.M1 to 9.0.0.M11 and 8.5.0 to 8.5.6 entered an infinite loop if a header was received that was larger than the available buffer. This made a denial of service attack possible.

INFO

Published Date :

Aug. 10, 2017, 10:29 p.m.

Last Modified :

Nov. 21, 2024, 2:56 a.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Public PoC/Exploit Available at Github

CVE-2016-6817 has a 4 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2016-6817 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Apache tomcat
: Total Affected Vendor : 1 | Products : 1
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-2016-6817.

URL Resource
http://www.securityfocus.com/bid/94462 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1037330 Third Party Advisory VDB Entry
https://lists.apache.org/thread.html/343558d982879bf88ec20dbf707f8c11255f8e219e81d45c4f8d0551%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/6af47120905aa7d8fe12f42e8ff2284fb338ba141d3b77b8c7cb61b3%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/88855876c33f2f9c532ffb75bfee570ccf0b17ffa77493745af9a17a%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/a9f24571460af003071475b75f18cad81ebcc36fa7c876965a75e32a%40%3Cannounce.tomcat.apache.org%3E
https://lists.apache.org/thread.html/b5e3f51d28cd5d9b1809f56594f2cf63dcd6a90429e16ea9f83bbedc%40%3Cdev.tomcat.apache.org%3E
https://security.netapp.com/advisory/ntap-20180607-0001/
http://www.securityfocus.com/bid/94462 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1037330 Third Party Advisory VDB Entry
https://lists.apache.org/thread.html/343558d982879bf88ec20dbf707f8c11255f8e219e81d45c4f8d0551%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/6af47120905aa7d8fe12f42e8ff2284fb338ba141d3b77b8c7cb61b3%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/88855876c33f2f9c532ffb75bfee570ccf0b17ffa77493745af9a17a%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/a9f24571460af003071475b75f18cad81ebcc36fa7c876965a75e32a%40%3Cannounce.tomcat.apache.org%3E
https://lists.apache.org/thread.html/b5e3f51d28cd5d9b1809f56594f2cf63dcd6a90429e16ea9f83bbedc%40%3Cdev.tomcat.apache.org%3E
https://security.netapp.com/advisory/ntap-20180607-0001/

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).

Profile Photo
auditt7708/rhsecapi

None

Python

Updated: 6 months, 1 week ago
0 stars 0 fork 0 watcher
Born at : May 18, 2024, 2:30 p.m. This repo has been linked 57 different CVEs too.
Profile Photo
RedHatProductSecurity/rhsecapi

None

Python

Updated: 4 weeks ago
6 stars 3 fork 3 watcher
Born at : April 12, 2021, 4:06 a.m. This repo has been linked 57 different CVEs too.
Profile Photo
ilmari666/cybsec

Cyber Securiy MOOC Unsecure project

Java HTML

Updated: 2 years, 5 months ago
1 stars 1 fork 1 watcher
Born at : Dec. 29, 2019, 12:57 p.m. This repo has been linked 70 different CVEs too.
Profile Photo
RedHatOfficial/rhsecapi

Tools that utilize the Red Hat Security Data API

Python

Updated: 2 months, 1 week ago
61 stars 26 fork 26 watcher
Born at : Oct. 14, 2016, 4:41 p.m. This repo has been linked 57 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2016-6817 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2016-6817 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 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Oct. 15, 2024

    Action Type Old Value New Value
    Added CWE CISA-ADP CWE-835
    Added CVSS V3.1 CISA-ADP AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference Apache Software Foundation https://lists.apache.org/thread.html/a9f24571460af003071475b75f18cad81ebcc36fa7c876965a75e32a%40%3Cannounce.tomcat.apache.org%3E [No types assigned]
    Added Reference Apache Software Foundation https://lists.apache.org/thread.html/343558d982879bf88ec20dbf707f8c11255f8e219e81d45c4f8d0551%40%3Cdev.tomcat.apache.org%3E [No types assigned]
    Added Reference Apache Software Foundation https://lists.apache.org/thread.html/b5e3f51d28cd5d9b1809f56594f2cf63dcd6a90429e16ea9f83bbedc%40%3Cdev.tomcat.apache.org%3E [No types assigned]
    Added Reference Apache Software Foundation https://lists.apache.org/thread.html/88855876c33f2f9c532ffb75bfee570ccf0b17ffa77493745af9a17a%40%3Cdev.tomcat.apache.org%3E [No types assigned]
    Added Reference Apache Software Foundation https://lists.apache.org/thread.html/6af47120905aa7d8fe12f42e8ff2284fb338ba141d3b77b8c7cb61b3%40%3Cdev.tomcat.apache.org%3E [No types assigned]
    Removed Reference Apache Software Foundation https://lists.apache.org/thread.html/a9f24571460af003071475b75f18cad81ebcc36fa7c876965a75e32a@%3Cannounce.tomcat.apache.org%3E
    Removed Reference Apache Software Foundation https://lists.apache.org/thread.html/343558d982879bf88ec20dbf707f8c11255f8e219e81d45c4f8d0551@%3Cdev.tomcat.apache.org%3E
    Removed Reference Apache Software Foundation https://lists.apache.org/thread.html/b5e3f51d28cd5d9b1809f56594f2cf63dcd6a90429e16ea9f83bbedc@%3Cdev.tomcat.apache.org%3E
    Removed Reference Apache Software Foundation https://lists.apache.org/thread.html/88855876c33f2f9c532ffb75bfee570ccf0b17ffa77493745af9a17a@%3Cdev.tomcat.apache.org%3E
    Removed Reference Apache Software Foundation https://lists.apache.org/thread.html/6af47120905aa7d8fe12f42e8ff2284fb338ba141d3b77b8c7cb61b3@%3Cdev.tomcat.apache.org%3E
  • CVE Modified by [email protected]

    Apr. 15, 2019

    Action Type Old Value New Value
    Added Reference https://lists.apache.org/thread.html/6af47120905aa7d8fe12f42e8ff2284fb338ba141d3b77b8c7cb61b3@%3Cdev.tomcat.apache.org%3E [No Types Assigned]
  • CVE Modified by [email protected]

    Apr. 15, 2019

    Action Type Old Value New Value
    Added Reference https://lists.apache.org/thread.html/88855876c33f2f9c532ffb75bfee570ccf0b17ffa77493745af9a17a@%3Cdev.tomcat.apache.org%3E [No Types Assigned]
  • CVE Modified by [email protected]

    Mar. 25, 2019

    Action Type Old Value New Value
    Added Reference https://lists.apache.org/thread.html/b5e3f51d28cd5d9b1809f56594f2cf63dcd6a90429e16ea9f83bbedc@%3Cdev.tomcat.apache.org%3E [No Types Assigned]
  • CVE Modified by [email protected]

    Mar. 21, 2019

    Action Type Old Value New Value
    Added Reference https://lists.apache.org/thread.html/343558d982879bf88ec20dbf707f8c11255f8e219e81d45c4f8d0551@%3Cdev.tomcat.apache.org%3E [No Types Assigned]
  • CVE Modified by [email protected]

    Jun. 09, 2018

    Action Type Old Value New Value
    Added Reference https://security.netapp.com/advisory/ntap-20180607-0001/ [No Types Assigned]
  • Initial Analysis by [email protected]

    Aug. 24, 2017

    Action Type Old Value New Value
    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://www.securityfocus.com/bid/94462 No Types Assigned http://www.securityfocus.com/bid/94462 Third Party Advisory, VDB Entry
    Changed Reference Type http://www.securitytracker.com/id/1037330 No Types Assigned http://www.securitytracker.com/id/1037330 Third Party Advisory, VDB Entry
    Changed Reference Type https://lists.apache.org/thread.html/a9f24571460af003071475b75f18cad81ebcc36fa7c876965a75e32a@%3Cannounce.tomcat.apache.org%3E No Types Assigned https://lists.apache.org/thread.html/a9f24571460af003071475b75f18cad81ebcc36fa7c876965a75e32a@%3Cannounce.tomcat.apache.org%3E Vendor Advisory
    Added CWE CWE-119
    Added CPE Configuration OR *cpe:2.3:a:apache:tomcat:8.5.0:*:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:8.5.1:*:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:8.5.2:*:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:8.5.3:*:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:8.5.4:*:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:8.5.5:*:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:8.5.6:*:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:9.0.0:m1:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:9.0.0:m10:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:9.0.0:m11:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:9.0.0:m2:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:9.0.0:m3:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:9.0.0:m4:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:9.0.0:m5:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:9.0.0:m6:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:9.0.0:m7:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:9.0.0:m8:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:9.0.0:m9:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Aug. 12, 2017

    Action Type Old Value New Value
    Added Reference http://www.securitytracker.com/id/1037330 [No Types Assigned]
    Added Reference http://www.securityfocus.com/bid/94462 [No Types Assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2016-6817 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-2016-6817 weaknesses.

CAPEC-8: Buffer Overflow in an API Call Buffer Overflow in an API Call CAPEC-9: Buffer Overflow in Local Command-Line Utilities Buffer Overflow in Local Command-Line Utilities CAPEC-10: Buffer Overflow via Environment Variables Buffer Overflow via Environment Variables CAPEC-14: Client-side Injection-induced Buffer Overflow Client-side Injection-induced Buffer Overflow CAPEC-24: Filter Failure through Buffer Overflow Filter Failure through Buffer Overflow CAPEC-42: MIME Conversion MIME Conversion CAPEC-44: Overflow Binary Resource File Overflow Binary Resource File CAPEC-45: Buffer Overflow via Symbolic Links Buffer Overflow via Symbolic Links CAPEC-46: Overflow Variables and Tags Overflow Variables and Tags CAPEC-47: Buffer Overflow via Parameter Expansion Buffer Overflow via Parameter Expansion CAPEC-100: Overflow Buffers Overflow Buffers CAPEC-123: Buffer Manipulation Buffer Manipulation
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

2.22 }} -0.30%

score

0.89727

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: