CVE-2021-2342: Medium severity Oracle MySQL Server vulnerability
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 5.7.34 and prior and 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 5.7.34 and prior and 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 5.7.35 - 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-2021-2342?
CVE-2021-2342 is classified as a high severity vulnerability allowing privileged attackers to compromise MySQL Server.
How do I fix CVE-2021-2342?
To fix CVE-2021-2342, upgrade MySQL Server to version 5.7.35 or later, or 8.0.26 or later.
Which versions are affected by CVE-2021-2342?
CVE-2021-2342 affects MySQL Server versions 5.7.34 and earlier, as well as 8.0.25 and earlier.
What component of MySQL Server is affected by CVE-2021-2342?
CVE-2021-2342 affects the Optimizer component of the MySQL Server product.
Who can exploit CVE-2021-2342?
CVE-2021-2342 can be easily exploited by high privileged attackers with network access using multiple protocols.