# CVE-2018-3081: libmysqlclient20: Vulnerability in the MySQL Client component of Oracle MySQL (subcomponent: Client programs)

CVE-2018-3081 is fixed in 10 products on 1 platform, first by libmysqlclient20 5.7.23-0ubuntu0.18.04.1, released July 17, 2018. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2018-3081
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0269
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 17, 2018

## Description

Vulnerability in the MySQL Client component of Oracle MySQL (subcomponent: Client programs). Supported versions that are affected are 5.5.60 and prior, 5.6.40 and prior, 5.7.22 and prior and 8.0.11 and prior. Difficult to exploit vulnerability allows high 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 as well as unauthorized update, insert or delete access to some of MySQL Client accessible data. CVSS 3.0 Base Score 5.0 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:H).

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libmysqlclient20 Ubuntu 18.04.6 LTS (bionic) | 5.7.23-0ubuntu0.18.04.1 | [libmysqlclient20 5.7.23-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libmysqlclient20-5.7.23-0ubuntu0.18.04.1.md) | Jul 17, 2018 |
| Linux | mysql-client Ubuntu 18.04.6 LTS (bionic) | 5.7.23-0ubuntu0.18.04.1 | [mysql-client 5.7.23-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-mysql-client-5.7.23-0ubuntu0.18.04.1.md) | Jul 17, 2018 |
| Linux | mysql-client-5.7 Ubuntu 18.04.6 LTS (bionic) | 5.7.23-0ubuntu0.18.04.1 | [mysql-client-5.7 5.7.23-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-mysql-client-5.7-5.7.23-0ubuntu0.18.04.1.md) | Jul 17, 2018 |
| Linux | mysql-client-core-5.7 Ubuntu 18.04.6 LTS (bionic) | 5.7.23-0ubuntu0.18.04.1 | [mysql-client-core-5.7 5.7.23-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-mysql-client-core-5.7-5.7.23-0ubuntu0.18.04.1.md) | Jul 17, 2018 |
| Linux | mysql-server Ubuntu 18.04.6 LTS (bionic) | 5.7.23-0ubuntu0.18.04.1 | [mysql-server 5.7.23-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-mysql-server-5.7.23-0ubuntu0.18.04.1.md) | Jul 17, 2018 |
| Linux | mysql-server-5.7 Ubuntu 18.04.6 LTS (bionic) | 5.7.23-0ubuntu0.18.04.1 | [mysql-server-5.7 5.7.23-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-mysql-server-5.7-5.7.23-0ubuntu0.18.04.1.md) | Jul 17, 2018 |
| Linux | mysql-server-core-5.7 Ubuntu 18.04.6 LTS (bionic) | 5.7.23-0ubuntu0.18.04.1 | [mysql-server-core-5.7 5.7.23-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-mysql-server-core-5.7-5.7.23-0ubuntu0.18.04.1.md) | Jul 17, 2018 |
| Linux | mysql-source-5.7 Ubuntu 18.04.6 LTS (bionic) | 5.7.23-0ubuntu0.18.04.1 | [mysql-source-5.7 5.7.23-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-mysql-source-5.7-5.7.23-0ubuntu0.18.04.1.md) | Jul 17, 2018 |
| Linux | mysql-testsuite Ubuntu 18.04.6 LTS (bionic) | 5.7.23-0ubuntu0.18.04.1 | [mysql-testsuite 5.7.23-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-mysql-testsuite-5.7.23-0ubuntu0.18.04.1.md) | Jul 17, 2018 |
| Linux | mysql-testsuite-5.7 Ubuntu 18.04.6 LTS (bionic) | 5.7.23-0ubuntu0.18.04.1 | [mysql-testsuite-5.7 5.7.23-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-mysql-testsuite-5.7-5.7.23-0ubuntu0.18.04.1.md) | Jul 17, 2018 |

---

Data as of 2026-11-07T18:46:35Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.