Description
Vulnerability in the MySQL Client product of Oracle MySQL (component: C API). Supported versions that are affected are 5.6.48 and prior, 5.7.30 and prior and 8.0.20 and prior. Difficult to exploit vulnerability allows low privileged attacker with network access via multiple protocols to compromise MySQL Client. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Client. CVSS 3.1 Base Score 5.3 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H).
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Oracle | MySQL Server | 5.6.48 and prior, 5.7.30 and prior, 8.0.20 and prior | — |
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 20.04 LTS | mariadb-10.3 | No fix yet | — |
| Ubuntu 20.04 LTS | mysql-8.0 | 8.0.21-0ubuntu0.20.04.3 | USN-4441-1 |
| Ubuntu 18.04 LTS | mariadb-10.1 | No fix yet | — |
| Ubuntu 18.04 LTS | mysql-5.7 | 5.7.31-0ubuntu0.18.04.1 | USN-4441-1 |
| Ubuntu 16.04 LTS | mariadb-10.0 +2 | No fix yet | — |
| Ubuntu 16.04 LTS | mysql-5.7 | 5.7.31-0ubuntu0.16.04.1 | USN-4441-1 |
| Ubuntu 14.04 LTS | mysql-5.5 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | mecab | 0.996-1.module+el8.0.0+3898+e09bb8de.9 | RHSA-2020:3732 |
| RHEL 8 | mecab-ipadic +1 | 2.7.0.20070801-16.module+el8.0.0+3898+e09bb8de | RHSA-2020:3732 |
| RHEL 8 | mysql +6 | 8.0.21-1.module+el8.2.0+7855+47abd494 | RHSA-2020:3732 |
| RHEL 7 | mariadb +7 | 1:5.5.64-1.el7 | RHSA-2019:2327 |
| RHEL 3 | rh-mariadb102-galera | 25.3.25-1.el6 | RHSA-2019:1258 |
| RHEL 3 | rh-mariadb102-mariadb +19 | 1:10.2.22-1.el6 | RHSA-2019:1258 |
| RHEL 3 | rh-mysql80-mysql +9 | 8.0.21-1.el7 | RHSA-2020:3518 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8.1 EUS | mecab | 0.996-1.module+el8.0.0+3898+e09bb8de.9 | RHSA-2020:3757 |
| RHEL 8.1 EUS | mecab-ipadic +1 | 2.7.0.20070801-16.module+el8.0.0+3898+e09bb8de | RHSA-2020:3757 |
| RHEL 8.1 EUS | mysql +6 | 8.0.21-1.module+el8.1.0+7854+62e1520f | RHSA-2020:3757 |
| RHEL 8.0 E4S | mecab | 0.996-1.module+el8.0.0+3898+e09bb8de.9 | RHSA-2020:3755 |
| RHEL 8.0 E4S | mecab-ipadic +1 | 2.7.0.20070801-16.module+el8.0.0+3898+e09bb8de | RHSA-2020:3755 |
| RHEL 8.0 E4S | mysql +6 | 8.0.21-1.module+el8.0.0+7853+3a2b0b25 | RHSA-2020:3755 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | mecab | 0.996-1.module_el8.4.0+2532+b8928c02.9 | ALSA-2020:3732 |
| AlmaLinux 8 | mecab-ipadic +1 | 2.7.0.20070801-16.module_el8.4.0+2532+b8928c02 | ALSA-2020:3732 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | mecab | 0.996-1.module+el8.3.0+242+87d3366a.9 | RLSA-2020:3732 |
| Rocky Linux 8 | mecab-ipadic | 2.7.0.20070801-16.module+el8.3.0+242+87d3366a | RLSA-2020:3732 |
| Rocky Linux 8 | mysql | 8.0.21-1.module+el8.3.0+242+87d3366a | RLSA-2020:3732 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | mecab | 0.996-1.module+el8.0.0+5253+1dce7bb2.9 | ELSA-2020-3732 |
| Oracle Linux 8 | mecab-ipadic +1 | 2.7.0.20070801-16.0.1.module+el8.0.0+5253+1dce7bb2 | ELSA-2020-3732 |
| Oracle Linux 8 | mysql +6 | 8.0.21-1.module+el8.2.0+7793+cfe2b687 | ELSA-2020-3732 |
Advisories 10
- ALSA-2020:3732 Important: mysql:8.0 security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2020:3757 Red Hat Security Advisory: mysql:8.0 security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2020:3755 Red Hat Security Advisory: mysql:8.0 security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2020:3732 Red Hat Security Advisory: mysql:8.0 security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2020:3518 Red Hat Security Advisory: rh-mysql80-mysql security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2019:2327 Red Hat Security Advisory: mariadb security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2019:1258 Red Hat Security Advisory: rh-mariadb102-mariadb and rh-mariadb102-galera security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- USN-4441-1 mysql-5.7, mysql-8.0 vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- RLSA-2020:3732 Important: mysql:8.0 security update Rocky Linux Security Advisories · Feb 4, 2026
- ELSA-2020-3732 Important: mysql:8.0 security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Sep 16, 2020
References
- https://www.oracle.com/security-alerts/cpujul2020.html
- USN-4441-1 vendor-advisory
- FEDORA-2020-9c27be9396 vendor-advisory
- FEDORA-2020-d5b2e71a17 vendor-advisory
- FEDORA-2020-77b95c868f vendor-advisory
- GLSA-202105-27 vendor-advisory
- https://security.netapp.com/advisory/ntap-20210622-0001/