CVE-2023-21873: Medium severity Oracle MySQL Server vulnerability
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.31 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 3.1 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).
Other sources
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.31 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.
External References:
https://www.oracle.com/security-alerts/cpujan2023.html#AppendixMSQL
— Red Hat
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
redhat/mysqlto a version that resolves this vulnerability.Fixed in 8.0.32
Event History
Frequently Asked Questions
What is the vulnerability CVE-2023-21873?
CVE-2023-21873 is a vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer) that allows a high privileged attacker with network access to compromise the MySQL Server.
Which versions of Oracle MySQL are affected by CVE-2023-21873?
Oracle MySQL versions 8.0.31 and prior are affected by CVE-2023-21873.
How severe is the vulnerability CVE-2023-21873?
The severity of CVE-2023-21873 is medium with a CVSS score of 4.9.
Is CVE-2023-21873 easily exploitable?
Yes, CVE-2023-21873 is easily exploitable.
How can I fix the vulnerability CVE-2023-21873?
To fix CVE-2023-21873, you should update your Oracle MySQL server to version 8.0.31 or a newer version.