CVE-2021-2383: 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-2021-2383?
CVE-2021-2383 is considered an easily exploitable vulnerability that can allow a high privileged attacker to compromise MySQL Server.
How do I fix CVE-2021-2383?
To fix CVE-2021-2383, upgrade MySQL Server to version 8.0.26 or later.
Which versions of MySQL Server are affected by CVE-2021-2383?
CVE-2021-2383 affects MySQL Server versions 8.0.25 and earlier.
Can CVE-2021-2383 be exploited remotely?
Yes, CVE-2021-2383 can be exploited by an attacker with network access via multiple protocols.
What components of MySQL Server does CVE-2021-2383 impact?
CVE-2021-2383 impacts the Server: Optimizer component of the MySQL Server product.