7.5
CVSSv3

CVE-2016-2179

Published: 16/09/2016 Updated: 07/11/2023
CVSS v2 Base Score: 5 | Impact Score: 2.9 | Exploitability Score: 10
CVSS v3 Base Score: 7.5 | Impact Score: 3.6 | Exploitability Score: 3.9
VMScore: 446
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Vulnerability Summary

The DTLS implementation in OpenSSL prior to 1.1.0 does not properly restrict the lifetime of queue entries associated with unused out-of-order messages, which allows remote malicious users 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.

Vulnerability Trend

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openssl openssl 1.0.1m

openssl openssl 1.0.2a

openssl openssl 1.0.1j

openssl openssl 1.0.1h

openssl openssl 1.0.2e

openssl openssl 1.0.1r

openssl openssl 1.0.2b

openssl openssl 1.0.1c

openssl openssl 1.0.1g

openssl openssl 1.0.2g

openssl openssl 1.0.1a

openssl openssl 1.0.2h

openssl openssl 1.0.1d

openssl openssl 1.0.1t

openssl openssl 1.0.2c

openssl openssl 1.0.1p

openssl openssl 1.0.1k

openssl openssl 1.0.1b

openssl openssl 1.0.1n

openssl openssl 1.0.1q

openssl openssl 1.0.1e

openssl openssl 1.0.1l

openssl openssl 1.0.1f

openssl openssl 1.0.1s

openssl openssl 1.0.1o

openssl openssl 1.0.2

openssl openssl 1.0.2f

openssl openssl 1.0.1i

openssl openssl 1.0.1

openssl openssl 1.0.2d

oracle linux 6

oracle linux 7

Vendor Advisories

Synopsis Important: openssl security update Type/Severity Security Advisory: Important Topic An update for openssl is now available for Red Hat Enterprise Linux 6 and Red Hat Enterprise Linux 7Red Hat Product Security has rated this update as having a security impact of Important A Common Vulnerability Sc ...
USN-3087-1 introduced a regression in OpenSSL ...
Several security issues were fixed in OpenSSL ...
It was discovered that OpenSSL did not always use constant time operations when computing Digital Signature Algorithm (DSA) signatures A local attacker could possibly use this flaw to obtain a private DSA key belonging to another user or service running on the same system (CVE-2016-2178) It was discovered that the Datagram TLS (DTLS) implementati ...
It was discovered that the Datagram TLS (DTLS) implementation could fail to release memory in certain cases A malicious DTLS client could cause a DTLS server using OpenSSL to consume an excessive amount of memory and, possibly, exit unexpectedly after exhausting all available memory ...
In a DTLS connection where handshake messages are delivered out-of-order those messages that OpenSSL is not yet ready to process will be buffered for later use Under certain circumstances, a flaw in the logic means that those messages do not get removed from the buffer even though the handshake has been completed An attacker could force up to app ...
On September 22, 2016, the OpenSSL Software Foundation released an advisory that describes 14 vulnerabilities Of these 14 vulnerabilities, the OpenSSL Software Foundation classifies one as “Critical Severity,” one as “Moderate Severity,” and the other 12 as “Low Severity” Subsequently, on September 26, the OpenSSL Software Foundatio ...
Nessus is potentially impacted by several vulnerabilities in OpenSSL (20160926) that were recently disclosed and fixed Note that due to the time involved in doing a full analysis of each issue, Tenable has opted to upgrade the included version of OpenSSL as a precaution, and to save time These vulnerabilities may impact Nessus and include: CVE-2 ...
LCE 481 is possibly impacted by multiple vulnerabilities reported in third-party libraries Tenable has not investigated each one to determine if it is exploitable or the vulnerable code path can be reached Instead, Dev has upgraded the impacted libraries as a faster and safer alternative Due to the number of library upgrades and the potential ...
Tenable's Passive Vulnerability Scanner (PVS) uses third-party libraries to provide certain standardized functionality Four of these libraries were found to contain vulnerabilities and were fixed upstream Those fixes have been integrated despite there being no known exploitation scenarios related to PVS OpenSSL ssl/statem/statemc read_state_ma ...

Exploits

Orion Elite Hidden IP Browser Pro versions 10 through 79 have insecure versions of Tor and OpenSSL included and also suffer from man-in-the-middle vulnerabilities ...

References

CWE-399http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.htmlhttp://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.htmlhttp://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.htmlhttp://www.securityfocus.com/bid/92987http://www.splunk.com/view/SP-CAAAPUEhttp://www.splunk.com/view/SP-CAAAPSVhttps://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40312https://bto.bluecoat.com/security-advisory/sa132http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759https://www.tenable.com/security/tns-2016-16http://www-01.ibm.com/support/docview.wss?uid=swg21995039http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.htmlhttp://www.securitytracker.com/id/1036689http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.htmlhttps://www.tenable.com/security/tns-2016-21https://www.tenable.com/security/tns-2016-20https://security.FreeBSD.org/advisories/FreeBSD-SA-16:26.openssl.aschttp://rhn.redhat.com/errata/RHSA-2016-1940.htmlhttp://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.htmlhttp://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.htmlhttps://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03856en_ushttps://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdfhttps://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=f5c7f5dfbaf0d2f7d946d0fe86f08e6bcb36ed0dhttps://nvd.nist.govhttps://access.redhat.com/errata/RHSA-2016:1940https://usn.ubuntu.com/3087-2/https://www.cisa.gov/uscert/ics/advisories/icsa-22-349-21