CVE-2021-2481: Medium severity Oracle MySQL vulnerability
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.26 and prior. Easily exploitable vulnerability allows low 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/cpuoct2021.html#AppendixMSQL
Other sources
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.26 and prior. Easily exploitable vulnerability allows low 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 6.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/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 8.0.27
Event History
Frequently Asked Questions
What is the severity of CVE-2021-2481?
CVE-2021-2481 is considered to be easily exploitable and allows a low privileged attacker to compromise MySQL Server.
How do I fix CVE-2021-2481?
To address CVE-2021-2481, upgrade your MySQL Server to version 8.0.27 or later.
What versions of MySQL are affected by CVE-2021-2481?
CVE-2021-2481 affects MySQL Server versions 8.0.26 and prior.
Can CVE-2021-2481 be exploited remotely?
Yes, CVE-2021-2481 can be exploited by an attacker with network access via multiple protocols.
Is there a workaround for CVE-2021-2481?
There are no known workarounds for CVE-2021-2481, so upgrading is recommended.