Description
Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Memcached). Supported versions that are affected are 5.6.36 and earlier and 5.7.18 and earlier. Difficult to exploit vulnerability allows unauthenticated attacker with network access via Memcached to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server as well as unauthorized update, insert or delete access to some of MySQL Server accessible data. CVSS 3.0 Base Score 6.5 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H).
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Oracle | MySQL Server | 5.6.36 and earlier, 5.7.18 and earlier | — |
| Oracle | Communications Policy Management | 12.x | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | mysql-5.7 | 5.7.19-0ubuntu1 | — |
| Ubuntu 16.04 LTS | mysql-5.7 | 5.7.19-0ubuntu0.16.04.1 | USN-3357-1 |
| Ubuntu 16.04 LTS | percona-server-5.6 +1 | No fix yet | — |
| Ubuntu 14.04 LTS | mysql-5.5 | 5.5.57-0ubuntu0.14.04.1 | USN-3357-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 2 | rh-mysql56-mysql +7 | 5.6.37-5.el6 | RHSA-2017:2787 |
| RHEL 2 | rh-mysql57-mysql +6 | 5.7.19-6.el6 | RHSA-2017:2886 |
Advisories 3
- RHSA-2017:2886 Red Hat Security Advisory: rh-mysql57-mysql security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2017:2787 Red Hat Security Advisory: rh-mysql56-mysql security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- USN-3357-1 mysql-5.5, mysql-5.7 vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
References
- RHSA-2017:2787 vendor-advisory
- http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html
- 1038928 vdb-entry
- 99722 vdb-entry
- RHSA-2017:2886 vendor-advisory
- http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html