CVE-2016-6303

critical

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.

References

Advisories
More

https://www.tenable.com/security/tns-2016-21

https://www.tenable.com/security/tns-2016-20

https://www.tenable.com/security/tns-2016-16

https://security.FreeBSD.org/advisories/FreeBSD-SA-16:26.openssl.asc

https://nodejs.org/en/blog/vulnerability/september-2016-security-releases/

https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40312

https://bugzilla.redhat.com/show_bug.cgi?id=1370146

https://bto.bluecoat.com/security-advisory/sa132

http://www.securitytracker.com/id/1036885

http://www.securityfocus.com/bid/92984

http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html

http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html

http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html

http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html

http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html

http://www-01.ibm.com/support/docview.wss?uid=swg21995039

http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759

https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=55d83bf7c10c7b205fffa23fa7c3977491e56c07

https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf

Details

Source: Mitre, NVD

Published: 2016-09-16

Updated: 2025-04-12

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.32879