CVE-2023-21867: 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 ID for this MySQL Server vulnerability?
The vulnerability ID for this MySQL Server vulnerability is CVE-2023-21867.
What component of MySQL Server is affected by this vulnerability?
This vulnerability affects the Server: Optimizer component of Oracle MySQL Server.
Which versions of Oracle MySQL Server are affected by this vulnerability?
The vulnerability affects Oracle MySQL Server versions 8.0.31 and prior.
Is this vulnerability easily exploitable?
Yes, this vulnerability is easily exploitable.
What is the severity level of this vulnerability?
The severity level of this vulnerability is medium with a CVSS v3.0 score of 4.9.
How can an attacker exploit this vulnerability?
An attacker with high privileges and network access via multiple protocols can exploit this vulnerability to compromise MySQL Server.
Is there a fix available for this vulnerability?
Yes, Oracle has released a fix for this vulnerability. Please refer to the Oracle Security Advisory for more information.