CVE-2021-2367: Medium severity Oracle MySQL Server vulnerability
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.25 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:
http://www.oracle.com/security-alerts/cpujul2021.html#AppendixMSQL
Other sources
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.25 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).
— MITRE
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
redhat/mysqlto a version that resolves this vulnerability.Fixed in 8.0.26
Event History
Frequently Asked Questions
What is the severity of CVE-2021-2367?
CVE-2021-2367 is considered to be an easily exploitable vulnerability that can allow high-privileged attackers to compromise MySQL Server.
How do I fix CVE-2021-2367?
To fix CVE-2021-2367, upgrade your MySQL Server to version 8.0.26 or later.
Which versions of MySQL Server are affected by CVE-2021-2367?
CVE-2021-2367 affects MySQL Server versions 8.0.25 and prior.
Who is affected by CVE-2021-2367?
Any high-privileged attacker with network access to the MySQL Server is potentially able to exploit CVE-2021-2367.
What components of MySQL are impacted by CVE-2021-2367?
CVE-2021-2367 specifically impacts the Server: Optimizer component of MySQL.