9.8
CRITICAL
CVE-2016-6303
OpenSSL MDC2 Integer Overflow Denial of Service
Description

Integer overflow in the MDC2_Update function in crypto/mdc2/mdc2dgst.c in OpenSSL before 1.1.0 allows remote attackers to cause a denial of service (out-of-bounds write and application crash) or possibly have unspecified other impact via unknown vectors.

INFO

Published Date :

Sept. 16, 2016, 5:59 a.m.

Last Modified :

Feb. 12, 2023, 11:24 p.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

3.9
Public PoC/Exploit Available at Github

CVE-2016-6303 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-2016-6303 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 Openssl openssl
1 Nodejs node.js
: Total Affected Vendor : 2 | Products : 2
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-2016-6303.

URL Resource
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759 Third Party Advisory
http://www-01.ibm.com/support/docview.wss?uid=swg21995039 Third Party Advisory
http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html Patch Third Party Advisory
http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html Patch Third Party Advisory
http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html Patch Third Party Advisory
http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html Patch Third Party Advisory
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html Patch Third Party Advisory
http://www.securityfocus.com/bid/92984 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1036885 Third Party Advisory VDB Entry
https://bto.bluecoat.com/security-advisory/sa132 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1370146 Issue Tracking Patch Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=55d83bf7c10c7b205fffa23fa7c3977491e56c07
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40312 Third Party Advisory
https://nodejs.org/en/blog/vulnerability/september-2016-security-releases/ Third Party Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:26.openssl.asc Third Party Advisory
https://www.tenable.com/security/tns-2016-16 Third Party Advisory
https://www.tenable.com/security/tns-2016-20 Third Party Advisory
https://www.tenable.com/security/tns-2016-21 Third Party Advisory

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
RClueX/Hackerone-Reports

None

Updated: 4 months, 1 week ago
1 stars 1 fork 1 watcher
Born at : Jan. 29, 2024, 7:04 a.m. This repo has been linked 80 different CVEs too.
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chnzzh/OpenSSL-CVE-lib

None

Updated: 1 week, 5 days ago
5 stars 0 fork 0 watcher
Born at : Feb. 23, 2023, 5:42 a.m. This repo has been linked 455 different CVEs too.
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imhunterand/hackerone-publicy-disclosed

hackerone one million reports

bugbountytips vulnerability-research

Updated: 1 year, 4 months ago
3 stars 1 fork 1 watcher
Born at : Oct. 15, 2022, 6:48 p.m. This repo has been linked 80 different CVEs too.
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tomwillfixit/alpine-cvecheck

Code used to CVE check Alpine based images

Shell

Updated: 1 year, 9 months ago
10 stars 0 fork 0 watcher
Born at : May 6, 2017, 9:13 p.m. This repo has been linked 60 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-2016-6303 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2016-6303 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]

    Feb. 12, 2023

    Action Type Old Value New Value
    Removed Reference https://git.openssl.org/?p=openssl.git;a=commit;h=55d83bf7c10c7b205fffa23fa7c3977491e56c07 [Issue Tracking, Patch, Third Party Advisory]
    Added Reference https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=55d83bf7c10c7b205fffa23fa7c3977491e56c07 [No Types Assigned]
  • CVE Modified by [email protected]

    Dec. 13, 2022

    Action Type Old Value New Value
    Removed Reference https://www.openssl.org/news/secadv/20160922.txt [Vendor Advisory]
    Added Reference https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf [No Types Assigned]
  • Modified Analysis by [email protected]

    Aug. 16, 2022

    Action Type Old Value New Value
    Removed CVSS V3 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html No Types Assigned http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html Patch, Third Party Advisory
    Changed Reference Type http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html No Types Assigned http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html Patch, Third Party Advisory
    Changed Reference Type http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html No Types Assigned http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html Patch, Third Party Advisory
    Changed Reference Type http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html Third Party Advisory http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html Patch, Third Party Advisory
    Changed Reference Type http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html No Types Assigned http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html Patch, Third Party Advisory
    Changed Reference Type http://www.securitytracker.com/id/1036885 No Types Assigned http://www.securitytracker.com/id/1036885 Third Party Advisory, VDB Entry
    Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1370146 Issue Tracking, Patch https://bugzilla.redhat.com/show_bug.cgi?id=1370146 Issue Tracking, Patch, Third Party Advisory
    Changed Reference Type https://security.FreeBSD.org/advisories/FreeBSD-SA-16:26.openssl.asc No Types Assigned https://security.FreeBSD.org/advisories/FreeBSD-SA-16:26.openssl.asc Third Party Advisory
    Changed Reference Type https://www.tenable.com/security/tns-2016-20 No Types Assigned https://www.tenable.com/security/tns-2016-20 Third Party Advisory
    Changed Reference Type https://www.tenable.com/security/tns-2016-21 No Types Assigned https://www.tenable.com/security/tns-2016-21 Third Party Advisory
    Changed CPE Configuration OR *cpe:2.3:a:nodejs:node.js:*:*:*:*:*:*:*:* versions up to (including) 6.6.0 OR *cpe:2.3:a:nodejs:node.js:*:*:*:*:*:*:*:* versions up to (excluding) 0.12.16 *cpe:2.3:a:nodejs:node.js:*:*:*:*:*:*:*:* versions from (including) 4.0.0 up to (excluding) 4.6.0 *cpe:2.3:a:nodejs:node.js:*:*:*:*:*:*:*:* versions from (including) 6.0.0 up to (excluding) 6.6.0
  • CVE Modified by [email protected]

    Apr. 20, 2018

    Action Type Old Value New Value
    Added Reference http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html [No Types Assigned]
  • CVE Modified by [email protected]

    Jan. 18, 2018

    Action Type Old Value New Value
    Added Reference http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html [No Types Assigned]
  • CVE Modified by [email protected]

    Nov. 21, 2017

    Action Type Old Value New Value
    Added Reference https://security.FreeBSD.org/advisories/FreeBSD-SA-16:26.openssl.asc [No Types Assigned]
  • CVE Modified by [email protected]

    Nov. 03, 2017

    Action Type Old Value New Value
    Added Reference https://www.tenable.com/security/tns-2016-21 [No Types Assigned]
    Added Reference https://www.tenable.com/security/tns-2016-20 [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 20, 2017

    Action Type Old Value New Value
    Added Reference http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html [No Types Assigned]
  • CVE Modified by [email protected]

    Aug. 09, 2017

    Action Type Old Value New Value
    Added Reference http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html [No Types Assigned]
  • CVE Modified by [email protected]

    Jul. 30, 2017

    Action Type Old Value New Value
    Added Reference http://www.securitytracker.com/id/1036885 [No Types Assigned]
  • Modified Analysis by [email protected]

    Feb. 23, 2017

    Action Type Old Value New Value
    Changed Reference Type http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759 No Types Assigned http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759 Third Party Advisory
    Changed Reference Type https://www.tenable.com/security/tns-2016-16 No Types Assigned https://www.tenable.com/security/tns-2016-16 Third Party Advisory
    Changed Reference Type http://www.securityfocus.com/bid/92984 No Types Assigned http://www.securityfocus.com/bid/92984 Third Party Advisory, VDB Entry
    Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1370146 Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1370146 Issue Tracking, Patch
    Changed Reference Type http://www-01.ibm.com/support/docview.wss?uid=swg21995039 No Types Assigned http://www-01.ibm.com/support/docview.wss?uid=swg21995039 Third Party Advisory
    Changed Reference Type https://git.openssl.org/?p=openssl.git;a=commit;h=55d83bf7c10c7b205fffa23fa7c3977491e56c07 Issue Tracking, Patch https://git.openssl.org/?p=openssl.git;a=commit;h=55d83bf7c10c7b205fffa23fa7c3977491e56c07 Third Party Advisory, Issue Tracking, Patch
    Changed Reference Type https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40312 No Types Assigned https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40312 Third Party Advisory
    Changed Reference Type http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html No Types Assigned http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html Third Party Advisory
    Changed Reference Type https://bto.bluecoat.com/security-advisory/sa132 No Types Assigned https://bto.bluecoat.com/security-advisory/sa132 Third Party Advisory
    Added Reference https://www.openssl.org/news/secadv/20160922.txt [Vendor Advisory]
    Changed CPE Configuration OR *cpe:2.3:a:openssl:openssl:1.0.2h:*:*:*:*:*:*:* (and previous) OR *cpe:2.3:a:openssl:openssl:1.0.1:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.1a:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.1b:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.1c:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.1d:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.1e:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.1f:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.1g:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.1h:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.1i:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.1j:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.1k:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.1l:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.1m:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.1n:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.1o:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.1p:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.1q:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.1r:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.1s:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.1t:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.2:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.2a:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.2b:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.2c:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.2d:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.2e:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.2f:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.2g:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.2h:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Feb. 02, 2017

    Action Type Old Value New Value
    Added Reference https://www.tenable.com/security/tns-2016-16 [No Types Assigned]
    Added Reference http://www-01.ibm.com/support/docview.wss?uid=swg21995039 [No Types Assigned]
  • CVE Modified by [email protected]

    Dec. 28, 2016

    Action Type Old Value New Value
    Added Reference https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40312 [No Types Assigned]
    Added Reference https://bto.bluecoat.com/security-advisory/sa132 [No Types Assigned]
    Added Reference http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759 [No Types Assigned]
  • CVE Modified by [email protected]

    Nov. 28, 2016

    Action Type Old Value New Value
    Added Reference http://www.securityfocus.com/bid/92984 [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 26, 2016

    Action Type Old Value New Value
    Added Reference http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
  • Modified Analysis by [email protected]

    Oct. 13, 2016

    Action Type Old Value New Value
    Changed CPE Configuration Configuration 1 OR *cpe:2.3:a:openssl:openssl:1.0.2h:*:*:*:*:*:*:* (and previous) Configuration 1 OR *cpe:2.3:a:nodejs:node.js:6.6.0:*:*:*:*:*:*:* (and previous) Configuration 2 OR *cpe:2.3:a:openssl:openssl:1.0.2h:*:*:*:*:*:*:* (and previous)
    Changed Reference Type https://nodejs.org/en/blog/vulnerability/september-2016-security-releases/ No Types Assigned https://nodejs.org/en/blog/vulnerability/september-2016-security-releases/ Third Party Advisory
  • Initial Analysis by [email protected]

    Oct. 12, 2016

    Action Type Old Value New Value
    Changed CPE Configuration Configuration 1 OR *cpe:2.3:a:openssl:openssl:1.0.2h:*:*:*:*:*:*:* (and previous) Configuration 1 OR *cpe:2.3:a:nodejs:node.js:6.6.0:*:*:*:*:*:*:* (and previous) Configuration 2 OR *cpe:2.3:a:openssl:openssl:1.0.2h:*:*:*:*:*:*:* (and previous)
    Changed Reference Type https://nodejs.org/en/blog/vulnerability/september-2016-security-releases/ No Types Assigned https://nodejs.org/en/blog/vulnerability/september-2016-security-releases/ Third Party Advisory
  • CVE Modified by [email protected]

    Oct. 12, 2016

    Action Type Old Value New Value
    Added Reference https://nodejs.org/en/blog/vulnerability/september-2016-security-releases/
  • Modified Analysis by [email protected]

    Sep. 16, 2016

    Action Type Old Value New Value
    Added CPE Configuration Configuration 1 OR *cpe:2.3:a:openssl:openssl:1.0.2h:*:*:*:*:*:*:* (and previous)
    Added CVSS V2 (AV:N/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1370146 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1370146 Issue Tracking
    Changed Reference Type https://git.openssl.org/?p=openssl.git;a=commit;h=55d83bf7c10c7b205fffa23fa7c3977491e56c07 No Types Assigned https://git.openssl.org/?p=openssl.git;a=commit;h=55d83bf7c10c7b205fffa23fa7c3977491e56c07 Issue Tracking, Patch
    Added CWE CWE-787
  • Initial Analysis by [email protected]

    Sep. 16, 2016

    Action Type Old Value New Value
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-2016-6303 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-2016-6303 weaknesses.

Exploit Prediction

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

28.94 }} 6.27%

score

0.96725

percentile

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