7.5
HIGH
CVE-2017-6056
Apache Tomcat Denial of Service via Infinite Loop Vulnerability
Description

It was discovered that a programming error in the processing of HTTPS requests in the Apache Tomcat servlet and JSP engine may result in denial of service via an infinite loop. The denial of service is easily achievable as a consequence of backporting a CVE-2016-6816 fix but not backporting the fix for Tomcat bug 57544. Distributions affected by this backporting issue include Debian (before 7.0.56-3+deb8u8 and 8.0.14-1+deb8u7 in jessie) and Ubuntu.

INFO

Published Date :

Feb. 17, 2017, 7:59 a.m.

Last Modified :

Nov. 7, 2023, 2:49 a.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2017-6056 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 Canonical ubuntu_linux
1 Debian debian_linux
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-2017-6056.

URL Resource
http://rhn.redhat.com/errata/RHSA-2017-0517.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2017-0826.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2017-0827.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2017-0828.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2017-0829.html Third Party Advisory
http://www.debian.org/security/2017/dsa-3787 Third Party Advisory
http://www.debian.org/security/2017/dsa-3788 Third Party Advisory
http://www.securityfocus.com/bid/96293 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1037860 Third Party Advisory VDB Entry
https://bugs.debian.org/851304 Issue Tracking Third Party Advisory
https://bz.apache.org/bugzilla/show_bug.cgi?id=60578 Issue Tracking Third Party Advisory
https://lists.apache.org/thread.html/6b414817c2b0bf351138911c8c922ec5dd577ebc0b9a7f42d705752d%40%3Cissues.activemq.apache.org%3E
https://lists.apache.org/thread.html/ac51944aef91dd5006b8510b0bef337adaccfe962fb90e7af9c22db4%40%3Cissues.activemq.apache.org%3E
https://lists.debian.org/debian-security-announce/2017/msg00038.html Third Party Advisory
https://lists.debian.org/debian-security-announce/2017/msg00039.html Third Party Advisory
https://security.netapp.com/advisory/ntap-20180731-0002/ Third Party Advisory
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html

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-2017-6056 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2017-6056 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 [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 MITRE https://lists.apache.org/thread.html/ac51944aef91dd5006b8510b0bef337adaccfe962fb90e7af9c22db4%40%3Cissues.activemq.apache.org%3E [No types assigned]
    Added Reference MITRE https://lists.apache.org/thread.html/6b414817c2b0bf351138911c8c922ec5dd577ebc0b9a7f42d705752d%40%3Cissues.activemq.apache.org%3E [No types assigned]
    Removed Reference MITRE https://lists.apache.org/thread.html/ac51944aef91dd5006b8510b0bef337adaccfe962fb90e7af9c22db4@%3Cissues.activemq.apache.org%3E
    Removed Reference MITRE https://lists.apache.org/thread.html/6b414817c2b0bf351138911c8c922ec5dd577ebc0b9a7f42d705752d@%3Cissues.activemq.apache.org%3E
  • CVE Modified by [email protected]

    Oct. 16, 2019

    Action Type Old Value New Value
    Added Reference https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html [No Types Assigned]
  • CWE Remap by [email protected]

    Oct. 03, 2019

    Action Type Old Value New Value
    Changed CWE CWE-19 CWE-19 CWE-835
  • CVE Modified by [email protected]

    Sep. 25, 2019

    Action Type Old Value New Value
    Added Reference https://lists.apache.org/thread.html/6b414817c2b0bf351138911c8c922ec5dd577ebc0b9a7f42d705752d@%3Cissues.activemq.apache.org%3E [No Types Assigned]
  • CVE Modified by [email protected]

    Jul. 23, 2019

    Action Type Old Value New Value
    Added Reference https://lists.apache.org/thread.html/ac51944aef91dd5006b8510b0bef337adaccfe962fb90e7af9c22db4@%3Cissues.activemq.apache.org%3E [No Types Assigned]
  • Modified Analysis by [email protected]

    Jun. 26, 2019

    Action Type Old Value New Value
    Changed Reference Type http://rhn.redhat.com/errata/RHSA-2017-0517.html No Types Assigned http://rhn.redhat.com/errata/RHSA-2017-0517.html Third Party Advisory
    Changed Reference Type http://rhn.redhat.com/errata/RHSA-2017-0826.html No Types Assigned http://rhn.redhat.com/errata/RHSA-2017-0826.html Third Party Advisory
    Changed Reference Type http://rhn.redhat.com/errata/RHSA-2017-0827.html No Types Assigned http://rhn.redhat.com/errata/RHSA-2017-0827.html Third Party Advisory
    Changed Reference Type http://rhn.redhat.com/errata/RHSA-2017-0828.html No Types Assigned http://rhn.redhat.com/errata/RHSA-2017-0828.html Third Party Advisory
    Changed Reference Type http://rhn.redhat.com/errata/RHSA-2017-0829.html No Types Assigned http://rhn.redhat.com/errata/RHSA-2017-0829.html Third Party Advisory
    Changed Reference Type http://www.debian.org/security/2017/dsa-3787 No Types Assigned http://www.debian.org/security/2017/dsa-3787 Third Party Advisory
    Changed Reference Type http://www.debian.org/security/2017/dsa-3788 No Types Assigned http://www.debian.org/security/2017/dsa-3788 Third Party Advisory
    Changed Reference Type http://www.securityfocus.com/bid/96293 No Types Assigned http://www.securityfocus.com/bid/96293 Third Party Advisory, VDB Entry
    Changed Reference Type http://www.securitytracker.com/id/1037860 No Types Assigned http://www.securitytracker.com/id/1037860 Third Party Advisory, VDB Entry
    Changed Reference Type https://security.netapp.com/advisory/ntap-20180731-0002/ No Types Assigned https://security.netapp.com/advisory/ntap-20180731-0002/ Third Party Advisory
    Removed CPE Configuration OR *cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
    Changed CPE Configuration OR *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* OR *cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Aug. 02, 2018

    Action Type Old Value New Value
    Added Reference https://security.netapp.com/advisory/ntap-20180731-0002/ [No Types Assigned]
  • CVE Modified by [email protected]

    Jan. 05, 2018

    Action Type Old Value New Value
    Added Reference http://rhn.redhat.com/errata/RHSA-2017-0829.html [No Types Assigned]
    Added Reference http://rhn.redhat.com/errata/RHSA-2017-0828.html [No Types Assigned]
    Added Reference http://rhn.redhat.com/errata/RHSA-2017-0827.html [No Types Assigned]
    Added Reference http://rhn.redhat.com/errata/RHSA-2017-0826.html [No Types Assigned]
    Added Reference http://rhn.redhat.com/errata/RHSA-2017-0517.html [No Types Assigned]
  • CVE Modified by [email protected]

    Nov. 04, 2017

    Action Type Old Value New Value
    Added Reference http://www.debian.org/security/2017/dsa-3788 [No Types Assigned]
    Added Reference http://www.debian.org/security/2017/dsa-3787 [No Types Assigned]
  • CVE Modified by [email protected]

    Jul. 25, 2017

    Action Type Old Value New Value
    Added Reference http://www.securitytracker.com/id/1037860 [No Types Assigned]
  • CVE Modified by [email protected]

    May. 23, 2017

    Action Type Old Value New Value
    Added Reference http://www.securityfocus.com/bid/96293 [No Types Assigned]
  • Initial Analysis by [email protected]

    Mar. 14, 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 https://bz.apache.org/bugzilla/show_bug.cgi?id=60578 No Types Assigned https://bz.apache.org/bugzilla/show_bug.cgi?id=60578 Issue Tracking, Third Party Advisory
    Changed Reference Type https://lists.debian.org/debian-security-announce/2017/msg00039.html No Types Assigned https://lists.debian.org/debian-security-announce/2017/msg00039.html Third Party Advisory
    Changed Reference Type https://bugs.debian.org/851304 No Types Assigned https://bugs.debian.org/851304 Issue Tracking, Third Party Advisory
    Changed Reference Type https://lists.debian.org/debian-security-announce/2017/msg00038.html No Types Assigned https://lists.debian.org/debian-security-announce/2017/msg00038.html Third Party Advisory
    Added CWE CWE-19
    Added CPE Configuration OR *cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
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-2017-6056 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-2017-6056 weaknesses.

Exploit Prediction

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

1.34 }} 0.08%

score

0.84662

percentile

CVSS30 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability