MEDIUM
OpenSSL: Race condition handling NewSessionTicket
Published Jun 12, 2015
6.8
MEDIUMCVSS 2.0
EPSS 15.86%
Description
Race condition in the ssl3_get_new_session_ticket function in ssl/s3_clnt.c in OpenSSL before 0.9.8zg, 1.0.0 before 1.0.0s, 1.0.1 before 1.0.1n, and 1.0.2 before 1.0.2b, when used for a multi-threaded client, allows remote attackers to cause a denial of service (double free and application crash) or possibly have unspecified other impact by providing a NewSessionTicket during an attempt to reuse a ticket that had been obtained earlier.
Affected products
No data.
OR
- ≤ 0.9.8zf
- 1.0.0
- 1.0.0
- 1.0.0
- 1.0.0
- 1.0.0
- 1.0.0
- 1.0.0a
- 1.0.0b
- 1.0.0c
- 1.0.0d
- 1.0.0e
- 1.0.0f
- 1.0.0g
- 1.0.0h
- 1.0.0i
- 1.0.0j
- 1.0.0k
- 1.0.0l
- 1.0.0m
- 1.0.0n
- 1.0.0o
- 1.0.0p
- 1.0.0q
- 1.0.0r
- 1.0.1
- 1.0.1
- 1.0.1
- 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
- 1.0.2
- 1.0.2
- 1.0.2a
No data.
Red Hat Enterprise Linux 6
openssl-0:1.0.1e-30.el6_6.11
Fixed · RHSA-2015:1115
Red Hat Enterprise Linux 7
openssl-1:1.0.1e-42.ael7b_1.8
Fixed · RHSA-2015:1115
Red Hat Enterprise Linux 5
openssl
Not affected
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 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
Not affected
Red Hat JBoss Enterprise Web Server 3
openssl
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | openssl-0:1.0.1e-30.el6_6.11 | Fixed | RHSA-2015:1115 |
| Red Hat Enterprise Linux 7 | openssl-1:1.0.1e-42.ael7b_1.8 | Fixed | RHSA-2015:1115 |
| 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 | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | openssl098e | Will not fix | 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 | Not affected | n/a |
| Red Hat JBoss Enterprise Web Server 3 | openssl | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue does NOT affect the version of OpenSSL package as shipped with Red Hat Enterprise Linux 5.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
6.8 MEDIUM NVD
AV:N/AC:M/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
15.86% 0.15860
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.15860
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 (37 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 15.86% (0.15860) | 96.78th | v5 (v2026.06.15) |
| Jun 15, 2026 | 15.97% (0.15968) | 96.47th | v5 (v2026.06.15) |
| Mar 4, 2026 | 10.25% (0.10249) | 93.02th | v4 (v2025.03.14) |
| Mar 1, 2026 | 7.12% (0.07118) | 91.42th | v4 (v2025.03.14) |
| Feb 4, 2026 | 10.25% (0.10249) | 92.97th | v4 (v2025.03.14) |
| Feb 1, 2026 | 7.12% (0.07118) | 91.36th | v4 (v2025.03.14) |
| Jan 4, 2026 | 10.25% (0.10249) | 92.91th | v4 (v2025.03.14) |
| Jan 1, 2026 | 7.12% (0.07118) | 91.31th | v4 (v2025.03.14) |
| Nov 1, 2025 | 10.51% (0.10513) | 92.95th | v4 (v2025.03.14) |
| Oct 27, 2025 | 12.06% (0.12056) | 93.51th | v4 (v2025.03.14) |
| Oct 1, 2025 | 10.51% (0.10513) | 93.01th | v4 (v2025.03.14) |
| Sep 18, 2025 | 12.06% (0.12056) | 93.55th | v4 (v2025.03.14) |
| Sep 4, 2025 | 13.18% (0.13176) | 93.88th | v4 (v2025.03.14) |
| Sep 1, 2025 | 7.79% (0.07786) | 91.66th | v4 (v2025.03.14) |
| Aug 4, 2025 | 13.18% (0.13176) | 93.84th | v4 (v2025.03.14) |
| Aug 1, 2025 | 7.79% (0.07786) | 91.64th | v4 (v2025.03.14) |
| Jul 30, 2025 | 13.18% (0.13176) | 93.84th | v4 (v2025.03.14) |
| Mar 30, 2025 | 11.94% (0.11936) | 93.12th | v4 (v2025.03.14) |
| Mar 29, 2025 | 19.47% (0.19470) | 92.46th | v4 (v2025.03.14) |
| Mar 28, 2025 | 11.94% (0.11936) | 93.12th | v4 (v2025.03.14) |
| Mar 27, 2025 | 19.47% (0.19470) | 94.59th | v4 (v2025.03.14) |
| Mar 21, 2025 | 11.94% (0.11936) | 93.19th | v4 (v2025.03.14) |
| Mar 20, 2025 | 10.25% (0.10249) | 92.52th | v4 (v2025.03.14) |
| Mar 19, 2025 | 16.97% (0.16970) | 94.20th | v4 (v2025.03.14) |
| Mar 17, 2025 | 10.25% (0.10249) | 92.58th | v4 (v2025.03.14) |
| Jan 22, 2025 | 27.79% (0.27791) | 96.85th | v3 (v2023.03.01) |
| Dec 17, 2024 | 30.99% (0.30988) | 96.97th | v3 (v2023.03.01) |
| Dec 12, 2024 | 39.53% (0.39530) | 97.39th | v3 (v2023.03.01) |
| May 19, 2024 | 39.38% (0.39382) | 97.25th | v3 (v2023.03.01) |
| Feb 17, 2024 | 47.11% (0.47107) | 97.34th | v3 (v2023.03.01) |
| Nov 9, 2023 | 50.41% (0.50411) | 97.19th | v3 (v2023.03.01) |
| Mar 7, 2023 | 33.05% (0.33047) | 96.33th | v3 (v2023.03.01) |
| Mar 6, 2023 | 7.56% (0.07559) | 92.87th | v2 (v2022.01.01) |
| Feb 13, 2023 | 7.56% (0.07559) | 92.57th | v2 (v2022.01.01) |
| Feb 3, 2023 | 4.72% (0.04720) | 88.89th | 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) |
Weaknesses (1)
References (54)
- http://fortiguard.com/advisory/openssl-vulnerabilities-june-2015
- http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2015-008.txt.asc vendor-advisory
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10694
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10733
- http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html vendor-advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160436.html vendor-advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160647.html vendor-advisory
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00023.html vendor-advisory
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00024.html vendor-advisory
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00026.html vendor-advisory
- http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00004.html vendor-advisory
- http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00006.html vendor-advisory
- http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00007.html vendor-advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00011.html vendor-advisory
- http://marc.info/?l=bugtraq&m=143880121627664&w=2 vendor-advisory
- http://marc.info/?l=bugtraq&m=144050155601375&w=2 vendor-advisory
- http://rhn.redhat.com/errata/RHSA-2015-1115.html vendor-advisory
- http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150612-openssl vendor-advisory
- http://www-304.ibm.com/support/docview.wss?uid=swg21960041
- http://www.debian.org/security/2015/dsa-3287 vendor-advisory
- http://www.fortiguard.com/advisory/2015-06-11-fortinet-vulnerability-openssl-vulnerabilities-june-2015
- http://www.fortiguard.com/advisory/openssl-vulnerabilities-june-2015
- http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.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.oracle.com/technetwork/topics/security/bulletinjul2015-2511963.html
- http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html
- http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html
- http://www.securityfocus.com/bid/75161 vdb-entry
- http://www.securityfocus.com/bid/91787 vdb-entry
- http://www.securitytracker.com/id/1032479 vdb-entry
- http://www.ubuntu.com/usn/USN-2639-1 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2015-1791 Vendor Advisory
- https://bto.bluecoat.com/security-advisory/sa98
- https://bugzilla.redhat.com/show_bug.cgi?id=1228608 Issue Tracking
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
- https://github.com/openssl/openssl/commit/98ece4eebfb6cd45cc8d550c6ac0022965071afc
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05045763
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05131044
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05150888
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05157667
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05158380
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05184351
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05353965
- https://kc.mcafee.com/corporate/index?page=content&id=SB10122
- https://nvd.nist.gov/vuln/detail/CVE-2015-1791
- https://openssl.org/news/secadv/20150611.txt
- https://security.gentoo.org/glsa/201506-02 vendor-advisory
- https://support.apple.com/kb/HT205031
- https://support.citrix.com/article/CTX216642
- https://www.arista.com/en/support/advisories-notices/security-advisories/1144-security-advisory-11
- https://www.cve.org/CVERecord?id=CVE-2015-1791
- https://www.openssl.org/news/secadv_20150611.txt Vendor Advisory
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published Jun 12, 2015
Updated Aug 6, 2024
Reserved Feb 17, 2015
Link CVE-2015-1791
CISA Vulnrichment
Updated n/a