mysql: use of SSL/TLS can not be enforced in mysql client library (oCERT-2015-003, BACKRONYM)
Published May 16, 2016
5.9
MEDIUMCVSS 3.1
EPSS 7.08%
Description
Oracle MySQL before 5.7.3, Oracle MySQL Connector/C (aka libmysqlclient) before 6.1.3, and MariaDB before 5.5.44 use the --ssl option to mean that SSL is optional, which allows man-in-the-middle attackers to spoof servers via a cleartext-downgrade attack, aka a "BACKRONYM" attack.
Affected products
No data.
Configuration 1
- ≤ 5.7.2
- ≤ 6.1.2
Configuration 2
Configuration 3
- 21
- 22
Configuration 4
- 8.0
Configuration 5
- 7.0
- 7.1
- 7.2
- 7.3
- 7.4
- 7.5
- 7.6
- 7.7
- 7.0
- 7.3
- 7.4
- 7.6
- 7.7
- 7.3
- 7.6
- 7.7
- 7.0
No data.
Red Hat Enterprise Linux 7
mariadb-1:5.5.44-1.ael7b_1
Fixed · RHSA-2015:1665
Red Hat Software Collections for Red Hat Enterprise Linux 6
mariadb55-mariadb-0:5.5.44-1.el6
Fixed · RHSA-2015:1647
Red Hat Software Collections for Red Hat Enterprise Linux 6
rh-mariadb100-mariadb-1:10.0.20-1.el6
Fixed · RHSA-2015:1646
Red Hat Software Collections for Red Hat Enterprise Linux 6.5 EUS
mariadb55-mariadb-0:5.5.44-1.el6
Fixed · RHSA-2015:1647
Red Hat Software Collections for Red Hat Enterprise Linux 6.5 EUS
rh-mariadb100-mariadb-1:10.0.20-1.el6
Fixed · RHSA-2015:1646
Red Hat Software Collections for Red Hat Enterprise Linux 6.6 EUS
mariadb55-mariadb-0:5.5.44-1.el6
Fixed · RHSA-2015:1647
Red Hat Software Collections for Red Hat Enterprise Linux 6.6 EUS
rh-mariadb100-mariadb-1:10.0.20-1.el6
Fixed · RHSA-2015:1646
Red Hat Software Collections for Red Hat Enterprise Linux 7
mariadb55-mariadb-0:5.5.44-1.el7
Fixed · RHSA-2015:1647
Red Hat Software Collections for Red Hat Enterprise Linux 7
rh-mariadb100-mariadb-1:10.0.20-1.el7
Fixed · RHSA-2015:1646
Red Hat Software Collections for Red Hat Enterprise Linux 7.1 EUS
mariadb55-mariadb-0:5.5.44-1.el7
Fixed · RHSA-2015:1647
Red Hat Software Collections for Red Hat Enterprise Linux 7.1 EUS
rh-mariadb100-mariadb-1:10.0.20-1.el7
Fixed · RHSA-2015:1646
Red Hat Enterprise Linux 5
mysql55-mysql
Will not fix
Red Hat Enterprise Linux 6
mysql
Will not fix
Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse)
mariadb-galera
Will not fix
Red Hat Enterprise Linux OpenStack Platform 6 (Juno)
mariadb-galera
Will not fix
Red Hat Software Collections
mysql55-mysql
Will not fix
Red Hat Software Collections
rh-mysql56-mysql
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | mariadb-1:5.5.44-1.ael7b_1 | Fixed | RHSA-2015:1665 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6 | mariadb55-mariadb-0:5.5.44-1.el6 | Fixed | RHSA-2015:1647 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6 | rh-mariadb100-mariadb-1:10.0.20-1.el6 | Fixed | RHSA-2015:1646 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6.5 EUS | mariadb55-mariadb-0:5.5.44-1.el6 | Fixed | RHSA-2015:1647 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6.5 EUS | rh-mariadb100-mariadb-1:10.0.20-1.el6 | Fixed | RHSA-2015:1646 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6.6 EUS | mariadb55-mariadb-0:5.5.44-1.el6 | Fixed | RHSA-2015:1647 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6.6 EUS | rh-mariadb100-mariadb-1:10.0.20-1.el6 | Fixed | RHSA-2015:1646 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 | mariadb55-mariadb-0:5.5.44-1.el7 | Fixed | RHSA-2015:1647 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 | rh-mariadb100-mariadb-1:10.0.20-1.el7 | Fixed | RHSA-2015:1646 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.1 EUS | mariadb55-mariadb-0:5.5.44-1.el7 | Fixed | RHSA-2015:1647 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.1 EUS | rh-mariadb100-mariadb-1:10.0.20-1.el7 | Fixed | RHSA-2015:1646 |
| Red Hat Enterprise Linux 5 | mysql55-mysql | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | mysql | Will not fix | n/a |
| Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse) | mariadb-galera | Will not fix | n/a |
| Red Hat Enterprise Linux OpenStack Platform 6 (Juno) | mariadb-galera | Will not fix | n/a |
| Red Hat Software Collections | mysql55-mysql | Will not fix | n/a |
| Red Hat Software Collections | rh-mysql56-mysql | Will not fix | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:N/I:P/A:N
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 (32 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 7.08% (0.07083) | 94.03th | v5 (v2026.06.15) |
| Jun 15, 2026 | 7.08% (0.07083) | 93.38th | v5 (v2026.06.15) |
| May 24, 2026 | 39.69% (0.39693) | 97.37th | v4 (v2025.03.14) |
| Jan 20, 2026 | 51.91% (0.51914) | 97.81th | v4 (v2025.03.14) |
| Jan 18, 2026 | 57.93% (0.57929) | 98.10th | v4 (v2025.03.14) |
| Dec 28, 2025 | 51.67% (0.51669) | 97.78th | v4 (v2025.03.14) |
| Dec 27, 2025 | 54.03% (0.54031) | 97.91th | v4 (v2025.03.14) |
| Nov 8, 2025 | 51.88% (0.51876) | 97.77th | v4 (v2025.03.14) |
| Nov 1, 2025 | 30.40% (0.30405) | 96.50th | v4 (v2025.03.14) |
| Oct 28, 2025 | 32.48% (0.32476) | 96.63th | v4 (v2025.03.14) |
| Oct 27, 2025 | 29.49% (0.29495) | 96.40th | v4 (v2025.03.14) |
| Oct 1, 2025 | 32.48% (0.32476) | 96.72th | v4 (v2025.03.14) |
| Aug 5, 2025 | 29.49% (0.29495) | 96.42th | v4 (v2025.03.14) |
| Jul 30, 2025 | 56.56% (0.56556) | 98.00th | v4 (v2025.03.14) |
| Jun 19, 2025 | 54.25% (0.54248) | 97.86th | v4 (v2025.03.14) |
| May 11, 2025 | 32.48% (0.32476) | 96.58th | v4 (v2025.03.14) |
| Apr 18, 2025 | 56.63% (0.56630) | 97.94th | v4 (v2025.03.14) |
| Apr 16, 2025 | 62.32% (0.62321) | 98.21th | v4 (v2025.03.14) |
| Apr 3, 2025 | 56.39% (0.56395) | 97.92th | v4 (v2025.03.14) |
| Mar 30, 2025 | 54.25% (0.54248) | 97.80th | v4 (v2025.03.14) |
| Mar 29, 2025 | 85.32% (0.85323) | 99.20th | v4 (v2025.03.14) |
| Mar 28, 2025 | 54.25% (0.54248) | 97.80th | v4 (v2025.03.14) |
| Mar 27, 2025 | 85.32% (0.85323) | 99.30th | v4 (v2025.03.14) |
| Mar 24, 2025 | 77.76% (0.77761) | 98.97th | v4 (v2025.03.14) |
| Mar 20, 2025 | 76.44% (0.76435) | 98.91th | v4 (v2025.03.14) |
| Mar 19, 2025 | 84.56% (0.84563) | 99.28th | v4 (v2025.03.14) |
| Mar 17, 2025 | 76.44% (0.76435) | 98.88th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.22% (0.00225) | 61.68th | v3 (v2023.03.01) |
| Apr 19, 2023 | 0.17% (0.00173) | 52.97th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.14% (0.00143) | 48.26th | v3 (v2023.03.01) |
| Mar 6, 2023 | 23.44% (0.23437) | 96.70th | v2 (v2022.01.01) |
| Feb 4, 2022 | 23.44% (0.23437) | 94.77th | v2 (v2022.01.01) |
References (21)
- http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161436.html vendor-advisoryx_refsource_FEDORAMailing ListThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161625.html vendor-advisoryx_refsource_FEDORAMailing ListThird Party Advisory
- http://mysqlblog.fivefarmers.com/2014/04/02/redefining-ssl-option/ x_refsource_MISCExploitThird Party Advisory
- http://mysqlblog.fivefarmers.com/2015/04/29/ssltls-in-5-6-and-5-5-ocert-advisory/ x_refsource_CONFIRMThird Party Advisory
- http://packetstormsecurity.com/files/131688/MySQL-SSL-TLS-Downgrade.html x_refsource_MISCThird Party AdvisoryVDB Entry
- http://rhn.redhat.com/errata/RHSA-2015-1646.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2015-1647.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2015-1665.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://www.debian.org/security/2015/dsa-3311 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.ocert.org/advisories/ocert-2015-003.html x_refsource_MISCVendor Advisory
- http://www.securityfocus.com/archive/1/535397/100/1100/threaded mailing-listx_refsource_BUGTRAQThird Party AdvisoryVDB Entry
- http://www.securityfocus.com/bid/74398 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1032216 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2015-3152 Vendor Advisory
- https://access.redhat.com/security/cve/cve-2015-3152 x_refsource_CONFIRMThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1217506 Issue Tracking
- https://github.com/mysql/mysql-server/commit/3bd5589e1a5a93f9c224badf983cd65c45215390 x_refsource_CONFIRMPatchThird Party Advisory
- https://jira.mariadb.org/browse/MDEV-7937 x_refsource_CONFIRMIssue TrackingVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2015-3152
- https://www.cve.org/CVERecord?id=CVE-2015-3152
- https://www.duosecurity.com/blog/backronym-mysql-vulnerability x_refsource_MISCThird Party Advisory
Change history (0)
No recorded changes yet.