openssl: excessive allocation of memory in tls_get_message_header()
Published Sep 26, 2016
5.9
MEDIUMCVSS 3.0
EPSS 13.84%
Description
The state-machine implementation in OpenSSL 1.1.0 before 1.1.0a allocates memory before checking for an excessive length, which might allow remote attackers to cause a denial of service (memory consumption) via crafted TLS messages, related to statem/statem.c and statem/statem_lib.c.
Affected products
No data.
No data.
Red Hat Enterprise Linux 4
openssl
Not affected
Red Hat Enterprise Linux 5
openssl
Not affected
Red Hat Enterprise Linux 5
openssl097a
Not affected
Red Hat Enterprise Linux 6
openssl
Not affected
Red Hat Enterprise Linux 6
openssl098e
Not affected
Red Hat Enterprise Linux 7
openssl
Not affected
Red Hat Enterprise Linux 7
openssl098e
Not affected
Red Hat JBoss Enterprise Application Platform 5
openssl
Not affected
Red Hat JBoss Enterprise Application Platform 6
openssl
Not affected
Red Hat JBoss Enterprise Web Server 1
openssl
Not affected
Red Hat JBoss Enterprise Web Server 2
openssl
Not affected
Red Hat JBoss Enterprise Web Server 3
openssl
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 4 | openssl | Not affected | n/a |
| 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 | openssl | Not affected | n/a |
| Red Hat Enterprise Linux 6 | openssl098e | Not affected | n/a |
| Red Hat Enterprise Linux 7 | openssl | Not affected | n/a |
| Red Hat Enterprise Linux 7 | openssl098e | Not affected | n/a |
| Red Hat JBoss Enterprise Application Platform 5 | 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 | Not affected | n/a |
| Red Hat JBoss Enterprise Web Server 2 | openssl | Not affected | 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.
CVSS:3.0/AV:N/AC:H/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:L
AV:N/AC:M/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 (49 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 13.84% (0.13837) | 96.41th | v5 (v2026.06.15) |
| Jun 15, 2026 | 13.84% (0.13837) | 96.03th | v5 (v2026.06.15) |
| Jun 4, 2026 | 20.87% (0.20873) | 95.73th | v4 (v2025.03.14) |
| Apr 21, 2026 | 13.26% (0.13256) | 94.17th | v4 (v2025.03.14) |
| Mar 4, 2026 | 20.44% (0.20439) | 95.43th | v4 (v2025.03.14) |
| Mar 3, 2026 | 10.59% (0.10592) | 93.19th | v4 (v2025.03.14) |
| Mar 1, 2026 | 12.57% (0.12570) | 93.84th | v4 (v2025.03.14) |
| Feb 4, 2026 | 20.87% (0.20873) | 95.47th | v4 (v2025.03.14) |
| Feb 1, 2026 | 12.57% (0.12570) | 93.80th | v4 (v2025.03.14) |
| Jan 4, 2026 | 20.87% (0.20873) | 95.43th | v4 (v2025.03.14) |
| Jan 1, 2026 | 12.57% (0.12570) | 93.76th | v4 (v2025.03.14) |
| Dec 14, 2025 | 20.87% (0.20873) | 95.42th | v4 (v2025.03.14) |
| Dec 4, 2025 | 18.82% (0.18818) | 95.04th | v4 (v2025.03.14) |
| Dec 1, 2025 | 11.41% (0.11412) | 93.34th | v4 (v2025.03.14) |
| Nov 30, 2025 | 18.82% (0.18818) | 95.04th | v4 (v2025.03.14) |
| Nov 10, 2025 | 13.87% (0.13870) | 94.01th | v4 (v2025.03.14) |
| Nov 4, 2025 | 15.71% (0.15710) | 94.42th | v4 (v2025.03.14) |
| Nov 1, 2025 | 9.21% (0.09214) | 92.39th | v4 (v2025.03.14) |
| Oct 4, 2025 | 15.71% (0.15710) | 94.46th | v4 (v2025.03.14) |
| Oct 1, 2025 | 9.21% (0.09214) | 92.45th | v4 (v2025.03.14) |
| Sep 5, 2025 | 15.71% (0.15710) | 94.47th | v4 (v2025.03.14) |
| Sep 1, 2025 | 9.21% (0.09214) | 92.45th | v4 (v2025.03.14) |
| Aug 9, 2025 | 15.71% (0.15710) | 94.42th | v4 (v2025.03.14) |
| Aug 4, 2025 | 18.82% (0.18818) | 95.03th | v4 (v2025.03.14) |
| Aug 1, 2025 | 11.41% (0.11412) | 93.34th | v4 (v2025.03.14) |
| Jul 4, 2025 | 18.82% (0.18818) | 94.99th | v4 (v2025.03.14) |
| Jul 1, 2025 | 11.41% (0.11412) | 93.28th | v4 (v2025.03.14) |
| Jun 4, 2025 | 18.82% (0.18818) | 94.95th | v4 (v2025.03.14) |
| Jun 1, 2025 | 11.41% (0.11412) | 93.23th | v4 (v2025.03.14) |
| May 4, 2025 | 18.82% (0.18818) | 94.92th | v4 (v2025.03.14) |
| May 1, 2025 | 11.41% (0.11412) | 93.20th | v4 (v2025.03.14) |
| Apr 12, 2025 | 18.82% (0.18818) | 94.81th | v4 (v2025.03.14) |
| Mar 30, 2025 | 17.80% (0.17802) | 94.60th | v4 (v2025.03.14) |
| Mar 29, 2025 | 20.92% (0.20924) | 92.87th | v4 (v2025.03.14) |
| Mar 20, 2025 | 17.42% (0.17422) | 94.57th | v4 (v2025.03.14) |
| Mar 17, 2025 | 10.85% (0.10847) | 92.84th | v4 (v2025.03.14) |
| Dec 17, 2024 | 55.91% (0.55909) | 97.80th | v3 (v2023.03.01) |
| Mar 8, 2024 | 60.97% (0.60967) | 97.69th | v3 (v2023.03.01) |
| Dec 28, 2023 | 53.61% (0.53612) | 97.32th | v3 (v2023.03.01) |
| Nov 8, 2023 | 50.90% (0.50903) | 97.20th | v3 (v2023.03.01) |
| Oct 9, 2023 | 46.91% (0.46909) | 97.03th | v3 (v2023.03.01) |
| Aug 30, 2023 | 38.84% (0.38841) | 96.74th | v3 (v2023.03.01) |
| Jul 18, 2023 | 7.95% (0.07947) | 93.38th | v3 (v2023.03.01) |
| May 8, 2023 | 6.35% (0.06350) | 92.52th | v3 (v2023.03.01) |
| Mar 23, 2023 | 8.74% (0.08737) | 93.47th | v3 (v2023.03.01) |
| Mar 7, 2023 | 6.46% (0.06460) | 92.56th | v3 (v2023.03.01) |
| Mar 6, 2023 | 6.58% (0.06584) | 91.39th | v2 (v2022.01.01) |
| Apr 1, 2022 | 6.58% (0.06584) | 90.55th | v2 (v2022.01.01) |
| Feb 4, 2022 | 6.58% (0.06584) | 78.46th | v2 (v2022.01.01) |
References (20)
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759
- http://www-01.ibm.com/support/docview.wss?uid=swg21995039
- 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
- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
- http://www.securityfocus.com/bid/93152 vdb-entry
- http://www.securitytracker.com/id/1036885 vdb-entry
- https://access.redhat.com/security/cve/CVE-2016-6307 Vendor Advisory
- https://bto.bluecoat.com/security-advisory/sa132
- https://bugzilla.redhat.com/show_bug.cgi?id=1378203 Issue Tracking
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
- https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=4b390b6c3f8df925dc92a3dd6b022baa9a2f4650
- https://nvd.nist.gov/vuln/detail/CVE-2016-6307
- https://www.cve.org/CVERecord?id=CVE-2016-6307
- https://www.openssl.org/news/secadv/20160922.txt Vendor Advisory
- https://www.tenable.com/security/tns-2016-16
- https://www.tenable.com/security/tns-2016-20
- https://www.tenable.com/security/tns-2016-21
Change history (0)
No recorded changes yet.