openssl: Insufficient TLS session ticket HMAC length checks
Published Sep 16, 2016
7.5
HIGHCVSS 3.0
EPSS 27.81%
Description
The tls_decrypt_ticket function in ssl/t1_lib.c in OpenSSL before 1.1.0 does not consider the HMAC size during validation of the ticket length, which allows remote attackers to cause a denial of service via a ticket that is too short.
Affected products
No data.
Configuration 1
- 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.
JBoss Core Services on RHEL 6
jbcs-httpd24-apache-commons-daemon-0:1.1.0-1.redhat_2.1.jbcs.el6
Fixed · RHSA-2018:2186
JBoss Core Services on RHEL 6
jbcs-httpd24-apache-commons-daemon-jsvc-1:1.1.0-1.redhat_2.jbcs.el6
Fixed · RHSA-2018:2186
JBoss Core Services on RHEL 6
jbcs-httpd24-apr-0:1.6.3-14.jbcs.el6
Fixed · RHSA-2018:2186
JBoss Core Services on RHEL 6
jbcs-httpd24-apr-util-0:1.6.1-9.jbcs.el6
Fixed · RHSA-2018:2186
JBoss Core Services on RHEL 6
jbcs-httpd24-httpd-0:2.4.29-17.jbcs.el6
Fixed · RHSA-2018:2186
JBoss Core Services on RHEL 6
jbcs-httpd24-mod_auth_kerb-0:5.4-36.jbcs.el6
Fixed · RHSA-2018:2186
JBoss Core Services on RHEL 6
jbcs-httpd24-mod_bmx-0:0.9.6-17.GA.jbcs.el6
Fixed · RHSA-2018:2186
JBoss Core Services on RHEL 6
jbcs-httpd24-mod_cluster-native-0:1.3.8-1.Final_redhat_2.jbcs.el6
Fixed · RHSA-2018:2186
JBoss Core Services on RHEL 6
jbcs-httpd24-mod_jk-0:1.2.43-1.redhat_1.jbcs.el6
Fixed · RHSA-2018:2186
JBoss Core Services on RHEL 6
jbcs-httpd24-mod_rt-0:2.4.1-19.GA.jbcs.el6
Fixed · RHSA-2018:2186
JBoss Core Services on RHEL 6
jbcs-httpd24-mod_security-0:2.9.1-23.GA.jbcs.el6
Fixed · RHSA-2018:2186
JBoss Core Services on RHEL 6
jbcs-httpd24-nghttp2-0:1.29.0-8.jbcs.el6
Fixed · RHSA-2018:2186
JBoss Core Services on RHEL 6
jbcs-httpd24-openssl-1:1.0.2n-11.jbcs.el6
Fixed · RHSA-2018:2186
JBoss Core Services on RHEL 7
jbcs-httpd24-apache-commons-daemon-0:1.1.0-1.redhat_2.1.jbcs.el7
Fixed · RHSA-2018:2185
JBoss Core Services on RHEL 7
jbcs-httpd24-apache-commons-daemon-jsvc-1:1.1.0-1.redhat_2.jbcs.el7
Fixed · RHSA-2018:2185
JBoss Core Services on RHEL 7
jbcs-httpd24-apr-0:1.6.3-14.jbcs.el7
Fixed · RHSA-2018:2185
JBoss Core Services on RHEL 7
jbcs-httpd24-apr-util-0:1.6.1-9.jbcs.el7
Fixed · RHSA-2018:2185
JBoss Core Services on RHEL 7
jbcs-httpd24-httpd-0:2.4.29-17.jbcs.el7
Fixed · RHSA-2018:2185
JBoss Core Services on RHEL 7
jbcs-httpd24-mod_auth_kerb-0:5.4-36.jbcs.el7
Fixed · RHSA-2018:2185
JBoss Core Services on RHEL 7
jbcs-httpd24-mod_bmx-0:0.9.6-17.GA.jbcs.el7
Fixed · RHSA-2018:2185
JBoss Core Services on RHEL 7
jbcs-httpd24-mod_cluster-native-0:1.3.8-1.Final_redhat_2.jbcs.el7
Fixed · RHSA-2018:2185
JBoss Core Services on RHEL 7
jbcs-httpd24-mod_jk-0:1.2.43-1.redhat_1.jbcs.el7
Fixed · RHSA-2018:2185
JBoss Core Services on RHEL 7
jbcs-httpd24-mod_rt-0:2.4.1-19.GA.jbcs.el7
Fixed · RHSA-2018:2185
JBoss Core Services on RHEL 7
jbcs-httpd24-mod_security-0:2.9.1-23.GA.jbcs.el7
Fixed · RHSA-2018:2185
JBoss Core Services on RHEL 7
jbcs-httpd24-nghttp2-0:1.29.0-8.jbcs.el7
Fixed · RHSA-2018:2185
JBoss Core Services on RHEL 7
jbcs-httpd24-openssl-1:1.0.2n-11.jbcs.el7
Fixed · RHSA-2018:2185
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 JBoss Core Services
n/a
Fixed · RHSA-2018:2187
Red Hat Enterprise Linux 5
openssl
Not affected
Red Hat Enterprise Linux 5
openssl097a
Not affected
Red Hat Enterprise Linux 6
openssl098e
Not affected
Red Hat Enterprise Linux 7
OVMF
Not affected
Red Hat Enterprise Linux 7
openssl098e
Not affected
Red Hat JBoss Enterprise Application Platform 6
openssl
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
Fix deferred
| Product | Package | State | Advisory |
|---|---|---|---|
| JBoss Core Services on RHEL 6 | jbcs-httpd24-apache-commons-daemon-0:1.1.0-1.redhat_2.1.jbcs.el6 | Fixed | RHSA-2018:2186 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-apache-commons-daemon-jsvc-1:1.1.0-1.redhat_2.jbcs.el6 | Fixed | RHSA-2018:2186 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-apr-0:1.6.3-14.jbcs.el6 | Fixed | RHSA-2018:2186 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-apr-util-0:1.6.1-9.jbcs.el6 | Fixed | RHSA-2018:2186 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-httpd-0:2.4.29-17.jbcs.el6 | Fixed | RHSA-2018:2186 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-mod_auth_kerb-0:5.4-36.jbcs.el6 | Fixed | RHSA-2018:2186 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-mod_bmx-0:0.9.6-17.GA.jbcs.el6 | Fixed | RHSA-2018:2186 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-mod_cluster-native-0:1.3.8-1.Final_redhat_2.jbcs.el6 | Fixed | RHSA-2018:2186 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-mod_jk-0:1.2.43-1.redhat_1.jbcs.el6 | Fixed | RHSA-2018:2186 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-mod_rt-0:2.4.1-19.GA.jbcs.el6 | Fixed | RHSA-2018:2186 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-mod_security-0:2.9.1-23.GA.jbcs.el6 | Fixed | RHSA-2018:2186 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-nghttp2-0:1.29.0-8.jbcs.el6 | Fixed | RHSA-2018:2186 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-openssl-1:1.0.2n-11.jbcs.el6 | Fixed | RHSA-2018:2186 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-apache-commons-daemon-0:1.1.0-1.redhat_2.1.jbcs.el7 | Fixed | RHSA-2018:2185 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-apache-commons-daemon-jsvc-1:1.1.0-1.redhat_2.jbcs.el7 | Fixed | RHSA-2018:2185 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-apr-0:1.6.3-14.jbcs.el7 | Fixed | RHSA-2018:2185 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-apr-util-0:1.6.1-9.jbcs.el7 | Fixed | RHSA-2018:2185 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-httpd-0:2.4.29-17.jbcs.el7 | Fixed | RHSA-2018:2185 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-mod_auth_kerb-0:5.4-36.jbcs.el7 | Fixed | RHSA-2018:2185 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-mod_bmx-0:0.9.6-17.GA.jbcs.el7 | Fixed | RHSA-2018:2185 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-mod_cluster-native-0:1.3.8-1.Final_redhat_2.jbcs.el7 | Fixed | RHSA-2018:2185 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-mod_jk-0:1.2.43-1.redhat_1.jbcs.el7 | Fixed | RHSA-2018:2185 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-mod_rt-0:2.4.1-19.GA.jbcs.el7 | Fixed | RHSA-2018:2185 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-mod_security-0:2.9.1-23.GA.jbcs.el7 | Fixed | RHSA-2018:2185 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-nghttp2-0:1.29.0-8.jbcs.el7 | Fixed | RHSA-2018:2185 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-openssl-1:1.0.2n-11.jbcs.el7 | Fixed | RHSA-2018:2185 |
| 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 JBoss Core Services | n/a | Fixed | RHSA-2018:2187 |
| Red Hat Enterprise Linux 5 | openssl | Not affected | n/a |
| Red Hat Enterprise Linux 5 | openssl097a | Not affected | n/a |
| Red Hat Enterprise Linux 6 | openssl098e | Not affected | n/a |
| Red Hat Enterprise Linux 7 | OVMF | Not affected | n/a |
| Red Hat Enterprise Linux 7 | openssl098e | Not affected | n/a |
| Red Hat JBoss Enterprise Application Platform 6 | openssl | 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 | Fix deferred | 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.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
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 (46 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 27.81% (0.27806) | 98.04th | v5 (v2026.06.15) |
| Sep 8, 2026 | 27.81% (0.27806) | 97.96th | v5 (v2026.06.15) |
| Jun 15, 2026 | 26.44% (0.26441) | 97.74th | v5 (v2026.06.15) |
| Jun 4, 2026 | 18.42% (0.18419) | 95.36th | v4 (v2025.03.14) |
| Apr 4, 2026 | 10.38% (0.10383) | 93.19th | v4 (v2025.03.14) |
| Mar 22, 2026 | 9.28% (0.09280) | 92.66th | v4 (v2025.03.14) |
| Mar 19, 2026 | 15.13% (0.15125) | 94.51th | v4 (v2025.03.14) |
| Mar 4, 2026 | 16.14% (0.16137) | 94.66th | v4 (v2025.03.14) |
| Mar 1, 2026 | 9.02% (0.09018) | 92.51th | v4 (v2025.03.14) |
| Feb 28, 2026 | 16.33% (0.16326) | 94.70th | v4 (v2025.03.14) |
| Feb 4, 2026 | 15.09% (0.15093) | 94.40th | v4 (v2025.03.14) |
| Feb 1, 2026 | 8.27% (0.08268) | 92.06th | v4 (v2025.03.14) |
| Jan 18, 2026 | 15.43% (0.15434) | 94.44th | v4 (v2025.03.14) |
| Jan 4, 2026 | 17.51% (0.17510) | 94.86th | v4 (v2025.03.14) |
| Jan 1, 2026 | 9.75% (0.09749) | 92.74th | v4 (v2025.03.14) |
| Dec 28, 2025 | 17.51% (0.17510) | 94.85th | v4 (v2025.03.14) |
| Dec 27, 2025 | 14.18% (0.14182) | 94.19th | v4 (v2025.03.14) |
| Dec 4, 2025 | 17.51% (0.17510) | 94.81th | v4 (v2025.03.14) |
| Dec 1, 2025 | 9.75% (0.09749) | 92.69th | v4 (v2025.03.14) |
| Nov 4, 2025 | 17.51% (0.17510) | 94.79th | v4 (v2025.03.14) |
| Nov 1, 2025 | 9.75% (0.09749) | 92.63th | v4 (v2025.03.14) |
| Oct 28, 2025 | 19.80% (0.19802) | 95.19th | v4 (v2025.03.14) |
| Oct 27, 2025 | 16.14% (0.16144) | 94.53th | v4 (v2025.03.14) |
| Oct 4, 2025 | 19.80% (0.19802) | 95.24th | v4 (v2025.03.14) |
| Oct 1, 2025 | 9.75% (0.09749) | 92.70th | v4 (v2025.03.14) |
| Sep 6, 2025 | 16.14% (0.16144) | 94.55th | v4 (v2025.03.14) |
| Sep 4, 2025 | 14.26% (0.14260) | 94.16th | v4 (v2025.03.14) |
| Sep 1, 2025 | 6.68% (0.06675) | 90.92th | v4 (v2025.03.14) |
| Aug 4, 2025 | 14.26% (0.14260) | 94.11th | v4 (v2025.03.14) |
| Aug 1, 2025 | 6.68% (0.06675) | 90.90th | v4 (v2025.03.14) |
| Jul 30, 2025 | 14.26% (0.14260) | 94.10th | v4 (v2025.03.14) |
| Jul 12, 2025 | 17.60% (0.17602) | 94.77th | v4 (v2025.03.14) |
| Jul 10, 2025 | 8.61% (0.08613) | 91.98th | v4 (v2025.03.14) |
| Mar 17, 2025 | 5.02% (0.05021) | 89.00th | v4 (v2025.03.14) |
| Dec 17, 2024 | 18.21% (0.18208) | 96.17th | v3 (v2023.03.01) |
| Jul 9, 2024 | 29.33% (0.29327) | 96.94th | v3 (v2023.03.01) |
| May 4, 2024 | 30.71% (0.30715) | 96.92th | v3 (v2023.03.01) |
| Feb 27, 2024 | 28.61% (0.28606) | 96.71th | v3 (v2023.03.01) |
| Dec 18, 2023 | 22.38% (0.22378) | 96.04th | v3 (v2023.03.01) |
| Nov 8, 2023 | 17.12% (0.17121) | 95.54th | v3 (v2023.03.01) |
| Aug 20, 2023 | 15.20% (0.15201) | 95.14th | v3 (v2023.03.01) |
| Jul 8, 2023 | 2.23% (0.02234) | 87.97th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.52% (0.01516) | 84.91th | 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 (31)
- 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 PatchThird Party Advisory
- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
- http://www.oracle.com/technetwork/topics/security/bulletinoct2016-3090566.html PatchThird Party Advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html PatchThird Party Advisory
- http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html PatchThird Party Advisory
- http://www.securityfocus.com/bid/92628 vdb-entryThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1036885 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/errata/RHSA-2018:2185 vendor-advisory
- https://access.redhat.com/errata/RHSA-2018:2186 vendor-advisory
- https://access.redhat.com/errata/RHSA-2018:2187 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2016-6302 Vendor Advisory
- https://bto.bluecoat.com/security-advisory/sa132 Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1369855 Issue Tracking
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
- https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=e97763c92c655dcf4af2860b3abd2bc4c8a267f9
- https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40312 Third Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2016-6302
- https://security.FreeBSD.org/advisories/FreeBSD-SA-16:26.openssl.asc vendor-advisory
- https://www.cve.org/CVERecord?id=CVE-2016-6302
- 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.