mysql: incorrect enforcement of ssl-mode=REQUIRED in MySQL 5.5 and 5.6
Published Apr 24, 2017
5.3
MEDIUMCVSS 3.0
EPSS 1.36%
Description
Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: C API). Supported versions that are affected are 5.5.55 and earlier and 5.6.35 and earlier. Difficult to exploit vulnerability allows low privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all MySQL Server accessible data. CVSS 3.0 Base Score 5.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N). NOTE: the previous information is from the April 2017 CPU. Oracle has not commented on third-party claims that this issue allows man-in-the-middle attackers to hijack the authentication of users by leveraging incorrect ordering of security parameter verification in a client, aka, "The Riddle".
Affected products
-
- Version 5.5.55 and earlierStatusaffectedConstraints-
- Version 5.6.35 and earlierStatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Oracle Corporation | MySQL Server | n/a |
|
No data.
Red Hat Software Collections for Red Hat Enterprise Linux 6
rh-mysql56-mysql-0:5.6.37-5.el6
Fixed · RHSA-2017:2787
Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS
rh-mysql56-mysql-0:5.6.37-5.el6
Fixed · RHSA-2017:2787
Red Hat Software Collections for Red Hat Enterprise Linux 7
rh-mysql56-mysql-0:5.6.37-5.el7
Fixed · RHSA-2017:2787
Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUS
rh-mysql56-mysql-0:5.6.37-5.el7
Fixed · RHSA-2017:2787
Red Hat Enterprise Linux 5
mysql55-mysql
Not affected
Red Hat Enterprise Linux 6
mysql
Not affected
Red Hat Enterprise Linux 7
mariadb
Not affected
Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse)
mariadb-galera
Not affected
Red Hat Enterprise Linux OpenStack Platform 6 (Juno)
mariadb-galera
Not affected
Red Hat Enterprise Linux OpenStack Platform 7 (Kilo)
mariadb-galera
Not affected
Red Hat Mobile Application Platform 4
rhmap-mysql-docker
Not affected
Red Hat OpenStack Platform 10 (Newton)
mariadb-galera
Not affected
Red Hat OpenStack Platform 11 (Ocata)
mariadb-galera
Not affected
Red Hat OpenStack Platform 12 (Pike)
mariadb-galera
Not affected
Red Hat OpenStack Platform 8 (Liberty)
mariadb-galera
Not affected
Red Hat OpenStack Platform 9 (Mitaka)
mariadb-galera
Not affected
Red Hat Software Collections
rh-mariadb100-mariadb
Not affected
Red Hat Software Collections
rh-mariadb101-mariadb
Not affected
Red Hat Software Collections
rh-mysql57-mysql
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Software Collections for Red Hat Enterprise Linux 6 | rh-mysql56-mysql-0:5.6.37-5.el6 | Fixed | RHSA-2017:2787 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS | rh-mysql56-mysql-0:5.6.37-5.el6 | Fixed | RHSA-2017:2787 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 | rh-mysql56-mysql-0:5.6.37-5.el7 | Fixed | RHSA-2017:2787 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUS | rh-mysql56-mysql-0:5.6.37-5.el7 | Fixed | RHSA-2017:2787 |
| Red Hat Enterprise Linux 5 | mysql55-mysql | Not affected | n/a |
| Red Hat Enterprise Linux 6 | mysql | Not affected | n/a |
| Red Hat Enterprise Linux 7 | mariadb | Not affected | n/a |
| Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse) | mariadb-galera | Not affected | n/a |
| Red Hat Enterprise Linux OpenStack Platform 6 (Juno) | mariadb-galera | Not affected | n/a |
| Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) | mariadb-galera | Not affected | n/a |
| Red Hat Mobile Application Platform 4 | rhmap-mysql-docker | Not affected | n/a |
| Red Hat OpenStack Platform 10 (Newton) | mariadb-galera | Not affected | n/a |
| Red Hat OpenStack Platform 11 (Ocata) | mariadb-galera | Not affected | n/a |
| Red Hat OpenStack Platform 12 (Pike) | mariadb-galera | Not affected | n/a |
| Red Hat OpenStack Platform 8 (Liberty) | mariadb-galera | Not affected | n/a |
| Red Hat OpenStack Platform 9 (Mitaka) | mariadb-galera | Not affected | n/a |
| Red Hat Software Collections | rh-mariadb100-mariadb | Not affected | n/a |
| Red Hat Software Collections | rh-mariadb101-mariadb | Not affected | n/a |
| Red Hat Software Collections | rh-mysql57-mysql | 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:L/UI:N/S:U/C:H/I:N/A:N
AV:N/AC:M/Au:S/C:C/I:N/A:N
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Oct 7, 2024 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.36% (0.01361) | 70.74th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.36% (0.01361) | 68.04th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.20% (0.00203) | 40.45th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.18% (0.00178) | 56.33th | v3 (v2023.03.01) |
| Jun 16, 2024 | 0.18% (0.00181) | 55.42th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.20% (0.00199) | 55.94th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.03% (0.01034) | 41.69th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.03% (0.01034) | 20.32th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.66% (0.01659) | 34.20th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.66% (0.01659) | 0.00th | v1 |
References (11)
- http://riddle.link/ x_refsource_MISCThird Party Advisory
- http://www.debian.org/security/2017/dsa-3834 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.openwall.com/lists/oss-security/2017/03/17/3 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://www.oracle.com/technetwork/security-advisory/cpuapr2017-3236618.html x_refsource_CONFIRMPatchVendor Advisory
- http://www.securityfocus.com/bid/97023 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1038287 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2017:2787 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2017-3305 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1431690 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2017-3305
- https://www.cve.org/CVERecord?id=CVE-2017-3305
| Link | Providers | Tags |
|---|---|---|
| http://riddle.link/ | x_refsource_MISCThird Party Advisory | |
| http://www.debian.org/security/2017/dsa-3834 | vendor-advisoryx_refsource_DEBIANThird Party Advisory | |
| http://www.openwall.com/lists/oss-security/2017/03/17/3 | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| http://www.oracle.com/technetwork/security-advisory/cpuapr2017-3236618.html | x_refsource_CONFIRMPatchVendor Advisory | |
| http://www.securityfocus.com/bid/97023 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1038287 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| https://access.redhat.com/errata/RHSA-2017:2787 | vendor-advisoryx_refsource_REDHATThird Party Advisory | |
| https://access.redhat.com/security/cve/CVE-2017-3305 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1431690 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-3305 | ||
| https://www.cve.org/CVERecord?id=CVE-2017-3305 |
Change history (0)
No recorded changes yet.