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CVE-2016-2179

42
FAUCET Score

CVE-2016-2179 is a denial-of-service vulnerability in the DTLS implementation of OpenSSL versions prior to 1.1.0, affecting various OpenSSL and Oracle Linux products. An unauthenticated remote attacker can exploit this by maintaining numerous crafted DTLS sessions, leading to excessive memory consumption. Rated with a CVSSv3 score of 7.5 (High), this vulnerability is easily exploitable over the network with low attack complexity. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.0.1CPE matchmatch criteria
cpe:2.3:a:openssl:openssl:1.0.1:*:*:*:*:*:*:*
1.0.1aCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:1.0.1a:*:*:*:*:*:*:*
1.0.1bCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:1.0.1b:*:*:*:*:*:*:*
1.0.1cCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:1.0.1c:*:*:*:*:*:*:*
1.0.1dCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:1.0.1d:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
26.56%
Probability of exploitation in next 30 days
EPSS Percentile
97.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.2656 is in the 96th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (7)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: openssl-0:1.0.1e-48.el6_8.3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: openssl-1:1.0.1e-51.el7_2.7
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: openssl
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: openssl098e
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: openssl098e
redhatend of lifevia redhat_api
Product: Red Hat JBoss Enterprise Web Server 1Fixed in: openssl
redhatend of lifevia redhat_api
Product: Red Hat JBoss Enterprise Web Server 2Fixed in: openssl

Vendor Advisories (1)

redhatCVE-2016-2179Moderate

openssl: DTLS memory exhaustion DoS when messages are not removed from fragment buffer

Jun 30, 2016

References

kb.juniper.net / InfoCenter/index
Third Party Advisory
rhn.redhat.com / errata/RHSA-2016-1940.html
bto.bluecoat.com / security-advisory/sa132
Third Party Advisory
cert-portal.siemens.com / productcert/pdf/ssa-412672.pdf
git.openssl.org
kb.pulsesecure.net / articles/Pulse_Security_Advisories/SA40312
Third Party Advisory
security.freebsd.org / advisories/FreeBSD-SA-16:26.openssl.asc
support.hpe.com / hpsc/doc/public/display
tenable.com / security/tns-2016-16
Third Party Advisory
tenable.com / security/tns-2016-20
tenable.com / security/tns-2016-21
www-01.ibm.com / support/docview.wss
Third Party Advisory
oracle.com / technetwork/security-advisory/cpuapr2018-3678067.html
oracle.com / technetwork/security-advisory/cpujan2018-3236628.html
oracle.com / technetwork/security-advisory/cpujul2017-3236622.html
oracle.com / technetwork/security-advisory/cpuoct2016-2881722.html
Third Party Advisory
oracle.com / technetwork/security-advisory/cpuoct2017-3236626.html
oracle.com / technetwork/topics/security/linuxbulletinoct2016-3090545.html
Third Party Advisory
oracle.com / technetwork/topics/security/ovmbulletinoct2016-3090547.html
Third Party Advisory
securityfocus.com / bid/92987
Third Party Advisory
securitytracker.com / id/1036689
splunk.com / view/SP-CAAAPSV
Third Party Advisory
splunk.com / view/SP-CAAAPUE
Third Party Advisory