mysql: ssl-validate-cert incorrect hostname check
Published Jan 27, 2016
5.9
MEDIUMCVSS 3.0
EPSS 3.74%
Description
The ssl_verify_server_cert function in sql-common/client.c in MariaDB before 5.5.47, 10.0.x before 10.0.23, and 10.1.x before 10.1.10; Oracle MySQL 5.5.48 and earlier, 5.6.29 and earlier, and 5.7.11 and earlier; and Percona Server do not properly verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via a "/CN=" string in a field in a certificate, as demonstrated by "/OU=/CN=bar.com/CN=foo.com."
Affected products
No data.
Configuration 1
Configuration 3
Configuration 5
- 6.0
- 7.0
Configuration 6
- 8.0
- 9.0
Configuration 7
- 12.04
- 14.04
- 15.10
- 16.04
No data.
Red Hat Enterprise Linux 7
mariadb-1:5.5.47-1.el7_2
Fixed · RHSA-2016:0534
Red Hat Software Collections for Red Hat Enterprise Linux 6
mariadb55-mariadb-0:5.5.49-1.el6
Fixed · RHSA-2016:1481
Red Hat Software Collections for Red Hat Enterprise Linux 6
mysql55-mysql-0:5.5.50-1.el6
Fixed · RHSA-2016:1480
Red Hat Software Collections for Red Hat Enterprise Linux 6
rh-mariadb100-mariadb-1:10.0.25-4.el6
Fixed · RHSA-2016:1132
Red Hat Software Collections for Red Hat Enterprise Linux 6
rh-mysql56-mysql-0:5.6.30-1.el6
Fixed · RHSA-2016:0705
Red Hat Software Collections for Red Hat Enterprise Linux 6.6 EUS
mariadb55-mariadb-0:5.5.49-1.el6
Fixed · RHSA-2016:1481
Red Hat Software Collections for Red Hat Enterprise Linux 6.6 EUS
mysql55-mysql-0:5.5.50-1.el6
Fixed · RHSA-2016:1480
Red Hat Software Collections for Red Hat Enterprise Linux 6.6 EUS
rh-mariadb100-mariadb-1:10.0.25-4.el6
Fixed · RHSA-2016:1132
Red Hat Software Collections for Red Hat Enterprise Linux 6.6 EUS
rh-mysql56-mysql-0:5.6.30-1.el6
Fixed · RHSA-2016:0705
Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS
mariadb55-mariadb-0:5.5.49-1.el6
Fixed · RHSA-2016:1481
Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS
mysql55-mysql-0:5.5.50-1.el6
Fixed · RHSA-2016:1480
Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS
rh-mariadb100-mariadb-1:10.0.25-4.el6
Fixed · RHSA-2016:1132
Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS
rh-mysql56-mysql-0:5.6.30-1.el6
Fixed · RHSA-2016:0705
Red Hat Software Collections for Red Hat Enterprise Linux 7
mariadb55-mariadb-0:5.5.49-1.el7
Fixed · RHSA-2016:1481
Red Hat Software Collections for Red Hat Enterprise Linux 7
mysql55-mysql-0:5.5.50-1.el7
Fixed · RHSA-2016:1480
Red Hat Software Collections for Red Hat Enterprise Linux 7
rh-mariadb100-mariadb-1:10.0.25-4.el7
Fixed · RHSA-2016:1132
Red Hat Software Collections for Red Hat Enterprise Linux 7
rh-mysql56-mysql-0:5.6.30-1.el7
Fixed · RHSA-2016:0705
Red Hat Software Collections for Red Hat Enterprise Linux 7.1 EUS
mariadb55-mariadb-0:5.5.49-1.el7
Fixed · RHSA-2016:1481
Red Hat Software Collections for Red Hat Enterprise Linux 7.1 EUS
mysql55-mysql-0:5.5.50-1.el7
Fixed · RHSA-2016:1480
Red Hat Software Collections for Red Hat Enterprise Linux 7.1 EUS
rh-mariadb100-mariadb-1:10.0.25-4.el7
Fixed · RHSA-2016:1132
Red Hat Software Collections for Red Hat Enterprise Linux 7.1 EUS
rh-mysql56-mysql-0:5.6.30-1.el7
Fixed · RHSA-2016:0705
Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUS
mariadb55-mariadb-0:5.5.49-1.el7
Fixed · RHSA-2016:1481
Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUS
mysql55-mysql-0:5.5.50-1.el7
Fixed · RHSA-2016:1480
Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUS
rh-mariadb100-mariadb-1:10.0.25-4.el7
Fixed · RHSA-2016:1132
Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUS
rh-mysql56-mysql-0:5.6.30-1.el7
Fixed · RHSA-2016:0705
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 Enterprise Linux OpenStack Platform 7 (Kilo)
mariadb-galera
Will not fix
Red Hat OpenStack Platform 8 (Liberty)
mariadb-galera
Will not fix
Red Hat Software Collections
rh-mariadb101-mariadb
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | mariadb-1:5.5.47-1.el7_2 | Fixed | RHSA-2016:0534 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6 | mariadb55-mariadb-0:5.5.49-1.el6 | Fixed | RHSA-2016:1481 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6 | mysql55-mysql-0:5.5.50-1.el6 | Fixed | RHSA-2016:1480 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6 | rh-mariadb100-mariadb-1:10.0.25-4.el6 | Fixed | RHSA-2016:1132 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6 | rh-mysql56-mysql-0:5.6.30-1.el6 | Fixed | RHSA-2016:0705 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6.6 EUS | mariadb55-mariadb-0:5.5.49-1.el6 | Fixed | RHSA-2016:1481 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6.6 EUS | mysql55-mysql-0:5.5.50-1.el6 | Fixed | RHSA-2016:1480 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6.6 EUS | rh-mariadb100-mariadb-1:10.0.25-4.el6 | Fixed | RHSA-2016:1132 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6.6 EUS | rh-mysql56-mysql-0:5.6.30-1.el6 | Fixed | RHSA-2016:0705 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS | mariadb55-mariadb-0:5.5.49-1.el6 | Fixed | RHSA-2016:1481 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS | mysql55-mysql-0:5.5.50-1.el6 | Fixed | RHSA-2016:1480 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS | rh-mariadb100-mariadb-1:10.0.25-4.el6 | Fixed | RHSA-2016:1132 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS | rh-mysql56-mysql-0:5.6.30-1.el6 | Fixed | RHSA-2016:0705 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 | mariadb55-mariadb-0:5.5.49-1.el7 | Fixed | RHSA-2016:1481 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 | mysql55-mysql-0:5.5.50-1.el7 | Fixed | RHSA-2016:1480 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 | rh-mariadb100-mariadb-1:10.0.25-4.el7 | Fixed | RHSA-2016:1132 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 | rh-mysql56-mysql-0:5.6.30-1.el7 | Fixed | RHSA-2016:0705 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.1 EUS | mariadb55-mariadb-0:5.5.49-1.el7 | Fixed | RHSA-2016:1481 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.1 EUS | mysql55-mysql-0:5.5.50-1.el7 | Fixed | RHSA-2016:1480 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.1 EUS | rh-mariadb100-mariadb-1:10.0.25-4.el7 | Fixed | RHSA-2016:1132 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.1 EUS | rh-mysql56-mysql-0:5.6.30-1.el7 | Fixed | RHSA-2016:0705 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUS | mariadb55-mariadb-0:5.5.49-1.el7 | Fixed | RHSA-2016:1481 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUS | mysql55-mysql-0:5.5.50-1.el7 | Fixed | RHSA-2016:1480 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUS | rh-mariadb100-mariadb-1:10.0.25-4.el7 | Fixed | RHSA-2016:1132 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUS | rh-mysql56-mysql-0:5.6.30-1.el7 | Fixed | RHSA-2016:0705 |
| 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 Enterprise Linux OpenStack Platform 7 (Kilo) | mariadb-galera | Will not fix | n/a |
| Red Hat OpenStack Platform 8 (Liberty) | mariadb-galera | Will not fix | n/a |
| Red Hat Software Collections | rh-mariadb101-mariadb | 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:H/A:N
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 (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.74% (0.03741) | 89.50th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.75% (0.03755) | 88.44th | v5 (v2026.06.15) |
| Oct 1, 2025 | 2.69% (0.02689) | 85.37th | v4 (v2025.03.14) |
| Mar 30, 2025 | 1.14% (0.01139) | 76.47th | v4 (v2025.03.14) |
| Mar 29, 2025 | 3.28% (0.03277) | 78.44th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.14% (0.01139) | 76.94th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.46% (0.00464) | 76.26th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.33% (0.00327) | 70.08th | v3 (v2023.03.01) |
| Sep 14, 2023 | 0.33% (0.00327) | 67.23th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.28% (0.00282) | 63.52th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.69% (0.02686) | 82.85th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.69% (0.02686) | 81.17th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.69% (0.02686) | 62.66th | v2 (v2022.01.01) |
References (28)
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00035.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00053.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00033.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00034.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00051.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00053.html vendor-advisoryx_refsource_SUSEThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-0534.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-0705.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-1480.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-1481.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://www.debian.org/security/2016/dsa-3453 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.debian.org/security/2016/dsa-3557 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.openwall.com/lists/oss-security/2016/01/26/3 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html x_refsource_CONFIRMPatchVendor Advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html x_refsource_CONFIRMThird Party Advisory
- http://www.securityfocus.com/bid/81810 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1035606 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- http://www.ubuntu.com/usn/USN-2953-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- http://www.ubuntu.com/usn/USN-2954-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://access.redhat.com/errata/RHSA-2016:1132 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2016-2047 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1301874 Issue Tracking
- https://mariadb.atlassian.net/browse/MDEV-9212 x_refsource_CONFIRMVendor Advisory
- https://mariadb.com/kb/en/mariadb/mariadb-10110-release-notes/ x_refsource_CONFIRMVendor Advisory
- https://mariadb.com/kb/en/mariadb/mariadb-5547-release-notes/ x_refsource_CONFIRMVendor Advisory
- https://mariadb.com/kb/en/mdb-10023-rn/ x_refsource_CONFIRMVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2016-2047
- https://www.cve.org/CVERecord?id=CVE-2016-2047
Change history (0)
No recorded changes yet.