CVE-2016-6303

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.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 14.70% Top 10%
Vendor Advisory FreeBSD.org
Affected: n/a n/a
Published at:
Updated at:

References

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

Frequently Asked Questions

What is the severity of CVE-2016-6303?
CVE-2016-6303 has been scored as a critical severity vulnerability.
How to fix CVE-2016-6303?
To fix CVE-2016-6303, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-6303 being actively exploited in the wild?
It is possible that CVE-2016-6303 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~15% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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