CVE-2021-2278: Medium severity Oracle MySQL vulnerability
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.23 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/cpuapr2021.html#AppendixMSQL
Other sources
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.23 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 8.0.24
Event History
Frequently Asked Questions
What is the severity of CVE-2021-2278?
CVE-2021-2278 is classified as an easily exploitable vulnerability that may allow high privileged attackers to compromise MySQL Server.
How do I fix CVE-2021-2278?
To fix CVE-2021-2278, upgrade MySQL Server to version 8.0.24 or later.
What versions are affected by CVE-2021-2278?
CVE-2021-2278 affects MySQL Server versions 8.0.23 and prior.
Who is affected by CVE-2021-2278?
Any organization using MySQL Server 8.0.23 or earlier versions is potentially affected by CVE-2021-2278.
What component of MySQL is vulnerable in CVE-2021-2278?
CVE-2021-2278 vulnerability is found in the MySQL Server component, specifically within the Optimizer.