CVE-2016-2179

Description

The DTLS implementation in OpenSSL before 1.1.0 does not properly restrict the lifetime of queue entries associated with unused out-of-order messages, which allows remote attackers to cause a denial of service (memory consumption) by maintaining many crafted DTLS sessions simultaneously, related to d1_lib.c, statem_dtls.c, statem_lib.c, and statem_srvr.c.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 19.59% Top 5%
Vendor Advisory redhat.com Vendor Advisory FreeBSD.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.tenable.com/security/tns-2016-20
http://www.splunk.com/view/SP-CAAAPUE third party advisory
http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
http://rhn.redhat.com/errata/RHSA-2016-1940.html vendor advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html third party advisory
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40312 third party advisory
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03856en_us
http://www.splunk.com/view/SP-CAAAPSV third party advisory
http://www-01.ibm.com/support/docview.wss?uid=swg21995039 third party advisory
http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html third party advisory
https://www.tenable.com/security/tns-2016-16 third party advisory
https://www.tenable.com/security/tns-2016-21
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html
http://www.securitytracker.com/id/1036689 vdb entry
http://www.securityfocus.com/bid/92987 vdb entry third party advisory
http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html third party advisory
https://bto.bluecoat.com/security-advisory/sa132 third party advisory
http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:26.openssl.asc vendor advisory
https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=f5c7f5dfbaf0d2f7d946d0fe86f08e6bcb36ed0d
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-2016-2179?
CVE-2016-2179 has been scored as a high severity vulnerability.
How to fix CVE-2016-2179?
To fix CVE-2016-2179, 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-2016-2179 being actively exploited in the wild?
It is possible that CVE-2016-2179 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~20% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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