# CVE-2018-2667: libmysqlclient20: Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Optimizer)

CVE-2018-2667 is fixed in 10 products on 1 platform, first by libmysqlclient20 5.7.21-1ubuntu1, released January 16, 2018. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2018-2667
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0224
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jan 16, 2018

## Description

Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Optimizer). Supported versions that are affected are 5.7.20 and prior. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols 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. CVSS 3.0 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libmysqlclient20 Ubuntu 18.04.6 LTS (bionic) | 5.7.21-1ubuntu1 | [libmysqlclient20 5.7.21-1ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libmysqlclient20-5.7.21-1ubuntu1.md) | Jan 16, 2018 |
| Linux | mysql-client Ubuntu 18.04.6 LTS (bionic) | 5.7.21-1ubuntu1 | [mysql-client 5.7.21-1ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-mysql-client-5.7.21-1ubuntu1.md) | Jan 16, 2018 |
| Linux | mysql-client-5.7 Ubuntu 18.04.6 LTS (bionic) | 5.7.21-1ubuntu1 | [mysql-client-5.7 5.7.21-1ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-mysql-client-5.7-5.7.21-1ubuntu1.md) | Jan 16, 2018 |
| Linux | mysql-client-core-5.7 Ubuntu 18.04.6 LTS (bionic) | 5.7.21-1ubuntu1 | [mysql-client-core-5.7 5.7.21-1ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-mysql-client-core-5.7-5.7.21-1ubuntu1.md) | Jan 16, 2018 |
| Linux | mysql-server Ubuntu 18.04.6 LTS (bionic) | 5.7.21-1ubuntu1 | [mysql-server 5.7.21-1ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-mysql-server-5.7.21-1ubuntu1.md) | Jan 16, 2018 |
| Linux | mysql-server-5.7 Ubuntu 18.04.6 LTS (bionic) | 5.7.21-1ubuntu1 | [mysql-server-5.7 5.7.21-1ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-mysql-server-5.7-5.7.21-1ubuntu1.md) | Jan 16, 2018 |
| Linux | mysql-server-core-5.7 Ubuntu 18.04.6 LTS (bionic) | 5.7.21-1ubuntu1 | [mysql-server-core-5.7 5.7.21-1ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-mysql-server-core-5.7-5.7.21-1ubuntu1.md) | Jan 16, 2018 |
| Linux | mysql-source-5.7 Ubuntu 18.04.6 LTS (bionic) | 5.7.21-1ubuntu1 | [mysql-source-5.7 5.7.21-1ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-mysql-source-5.7-5.7.21-1ubuntu1.md) | Jan 16, 2018 |
| Linux | mysql-testsuite Ubuntu 18.04.6 LTS (bionic) | 5.7.21-1ubuntu1 | [mysql-testsuite 5.7.21-1ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-mysql-testsuite-5.7.21-1ubuntu1.md) | Jan 16, 2018 |
| Linux | mysql-testsuite-5.7 Ubuntu 18.04.6 LTS (bionic) | 5.7.21-1ubuntu1 | [mysql-testsuite-5.7 5.7.21-1ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-mysql-testsuite-5.7-5.7.21-1ubuntu1.md) | Jan 16, 2018 |

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