HIGH
openssl: DTLS memory exhaustion DoS when messages are not removed from fragment buffer
Published Sep 16, 2016
7.5
HIGHCVSS 3.0
EPSS 26.56%
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.
Affected products
No data.
Configuration 1
OR
- 1.0.1
- 1.0.1a
- 1.0.1b
- 1.0.1c
- 1.0.1d
- 1.0.1e
- 1.0.1f
- 1.0.1g
- 1.0.1h
- 1.0.1i
- 1.0.1j
- 1.0.1k
- 1.0.1l
- 1.0.1m
- 1.0.1n
- 1.0.1o
- 1.0.1p
- 1.0.1q
- 1.0.1r
- 1.0.1s
- 1.0.1t
- 1.0.2
- 1.0.2a
- 1.0.2b
- 1.0.2c
- 1.0.2d
- 1.0.2e
- 1.0.2f
- 1.0.2g
- 1.0.2h
No data.
Red Hat Enterprise Linux 6
openssl-0:1.0.1e-48.el6_8.3
Fixed · RHSA-2016:1940
Red Hat Enterprise Linux 7
openssl-1:1.0.1e-51.el7_2.7
Fixed · RHSA-2016:1940
Red Hat Enterprise Linux 5
openssl
Will not fix
Red Hat Enterprise Linux 5
openssl097a
Not affected
Red Hat Enterprise Linux 6
openssl098e
Will not fix
Red Hat Enterprise Linux 7
openssl098e
Will not fix
Red Hat JBoss Core Services
openssl
Not affected
Red Hat JBoss Enterprise Application Platform 6
openssl
Not affected
Red Hat JBoss Enterprise Web Server 1
openssl
Will not fix
Red Hat JBoss Enterprise Web Server 2
openssl
Will not fix
Red Hat JBoss Enterprise Web Server 3
openssl
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | openssl-0:1.0.1e-48.el6_8.3 | Fixed | RHSA-2016:1940 |
| Red Hat Enterprise Linux 7 | openssl-1:1.0.1e-51.el7_2.7 | Fixed | RHSA-2016:1940 |
| Red Hat Enterprise Linux 5 | openssl | Will not fix | n/a |
| Red Hat Enterprise Linux 5 | openssl097a | Not affected | n/a |
| Red Hat Enterprise Linux 6 | openssl098e | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | openssl098e | Will not fix | n/a |
| Red Hat JBoss Core Services | openssl | Not affected | n/a |
| Red Hat JBoss Enterprise Application Platform 6 | openssl | Not affected | n/a |
| Red Hat JBoss Enterprise Web Server 1 | openssl | Will not fix | n/a |
| Red Hat JBoss Enterprise Web Server 2 | openssl | Will not fix | n/a |
| Red Hat JBoss Enterprise Web Server 3 | openssl | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
7.5 HIGH NVD
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
1 other source (Red Hat) ▾
5.3 MEDIUM Red Hat
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact Low
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
26.56% 0.26559
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.26559
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (47 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 26.56% (0.26559) | 97.96th | v5 (v2026.06.15) |
| Jun 15, 2026 | 26.56% (0.26559) | 97.75th | v5 (v2026.06.15) |
| Mar 22, 2026 | 18.31% (0.18307) | 95.14th | v4 (v2025.03.14) |
| Mar 4, 2026 | 17.09% (0.17087) | 94.87th | v4 (v2025.03.14) |
| Mar 1, 2026 | 5.79% (0.05792) | 90.38th | v4 (v2025.03.14) |
| Feb 4, 2026 | 17.29% (0.17286) | 94.85th | v4 (v2025.03.14) |
| Feb 1, 2026 | 5.79% (0.05792) | 90.32th | v4 (v2025.03.14) |
| Jan 16, 2026 | 17.29% (0.17286) | 94.82th | v4 (v2025.03.14) |
| Jan 14, 2026 | 18.31% (0.18307) | 94.99th | v4 (v2025.03.14) |
| Jan 4, 2026 | 16.96% (0.16962) | 94.75th | v4 (v2025.03.14) |
| Jan 1, 2026 | 5.75% (0.05752) | 90.24th | v4 (v2025.03.14) |
| Dec 4, 2025 | 16.96% (0.16962) | 94.71th | v4 (v2025.03.14) |
| Dec 1, 2025 | 5.75% (0.05752) | 90.16th | v4 (v2025.03.14) |
| Nov 4, 2025 | 16.96% (0.16962) | 94.69th | v4 (v2025.03.14) |
| Nov 1, 2025 | 5.75% (0.05752) | 90.10th | v4 (v2025.03.14) |
| Oct 4, 2025 | 16.96% (0.16962) | 94.72th | v4 (v2025.03.14) |
| Oct 1, 2025 | 5.75% (0.05752) | 90.13th | v4 (v2025.03.14) |
| Sep 16, 2025 | 16.85% (0.16852) | 94.71th | v4 (v2025.03.14) |
| Sep 8, 2025 | 19.47% (0.19472) | 95.17th | v4 (v2025.03.14) |
| Sep 4, 2025 | 18.40% (0.18403) | 94.99th | v4 (v2025.03.14) |
| Sep 1, 2025 | 5.64% (0.05642) | 90.06th | v4 (v2025.03.14) |
| Aug 4, 2025 | 18.40% (0.18403) | 94.96th | v4 (v2025.03.14) |
| Aug 1, 2025 | 5.64% (0.05642) | 90.06th | v4 (v2025.03.14) |
| Jul 10, 2025 | 18.52% (0.18520) | 94.94th | v4 (v2025.03.14) |
| Jul 4, 2025 | 19.59% (0.19593) | 95.14th | v4 (v2025.03.14) |
| Jul 1, 2025 | 6.83% (0.06826) | 90.92th | v4 (v2025.03.14) |
| Jun 4, 2025 | 19.59% (0.19593) | 95.09th | v4 (v2025.03.14) |
| Jun 1, 2025 | 6.83% (0.06826) | 90.87th | v4 (v2025.03.14) |
| May 4, 2025 | 19.59% (0.19593) | 95.05th | v4 (v2025.03.14) |
| May 1, 2025 | 6.83% (0.06826) | 90.85th | v4 (v2025.03.14) |
| Mar 17, 2025 | 19.59% (0.19593) | 94.94th | v4 (v2025.03.14) |
| Dec 17, 2024 | 40.26% (0.40263) | 97.30th | v3 (v2023.03.01) |
| Oct 16, 2024 | 48.28% (0.48278) | 97.56th | v3 (v2023.03.01) |
| Jul 9, 2024 | 40.53% (0.40533) | 97.31th | v3 (v2023.03.01) |
| May 4, 2024 | 42.09% (0.42092) | 97.30th | v3 (v2023.03.01) |
| Feb 27, 2024 | 39.71% (0.39714) | 97.13th | v3 (v2023.03.01) |
| Dec 18, 2023 | 32.33% (0.32327) | 96.59th | v3 (v2023.03.01) |
| Nov 8, 2023 | 28.47% (0.28466) | 96.36th | v3 (v2023.03.01) |
| Sep 29, 2023 | 24.52% (0.24516) | 96.05th | v3 (v2023.03.01) |
| Aug 20, 2023 | 21.78% (0.21783) | 95.84th | v3 (v2023.03.01) |
| Jul 8, 2023 | 3.49% (0.03486) | 90.21th | v3 (v2023.03.01) |
| May 8, 2023 | 2.75% (0.02751) | 89.01th | v3 (v2023.03.01) |
| Apr 20, 2023 | 2.26% (0.02262) | 87.95th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.25% (0.02246) | 87.78th | v3 (v2023.03.01) |
| Mar 6, 2023 | 7.56% (0.07559) | 92.87th | v2 (v2022.01.01) |
| Apr 1, 2022 | 7.56% (0.07559) | 92.17th | v2 (v2022.01.01) |
| Feb 4, 2022 | 7.56% (0.07559) | 81.11th | v2 (v2022.01.01) |
References (28)
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759 Third Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-1940.html vendor-advisory
- http://www-01.ibm.com/support/docview.wss?uid=swg21995039 Third Party Advisory
- http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html
- http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
- http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html
- http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html Third Party Advisory
- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html Third Party Advisory
- http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html Third Party Advisory
- http://www.securityfocus.com/bid/92987 vdb-entryThird Party Advisory
- http://www.securitytracker.com/id/1036689 vdb-entry
- http://www.splunk.com/view/SP-CAAAPSV Third Party Advisory
- http://www.splunk.com/view/SP-CAAAPUE Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2016-2179 Vendor Advisory
- https://bto.bluecoat.com/security-advisory/sa132 Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1369504 Issue Tracking
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
- https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=f5c7f5dfbaf0d2f7d946d0fe86f08e6bcb36ed0d
- https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40312 Third Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2016-2179
- https://security.FreeBSD.org/advisories/FreeBSD-SA-16:26.openssl.asc vendor-advisory
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03856en_us
- https://www.cve.org/CVERecord?id=CVE-2016-2179
- https://www.openssl.org/news/secadv/20160922.txt
- https://www.tenable.com/security/tns-2016-16 Third Party Advisory
- https://www.tenable.com/security/tns-2016-20
- https://www.tenable.com/security/tns-2016-21
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published Sep 16, 2016
Updated Aug 5, 2024
Reserved Jan 29, 2016
Link CVE-2016-2179
CISA Vulnrichment
Updated n/a