CVE-2021-2429: MySQL InnoDB Heap-based Buffer Overflow Remote Code Execution Vulnerability
This vulnerability allows remote attackers to execute arbitrary code on affected installations of MySQL. Authentication is not required to exploit this vulnerability. The specific flaw exists within the processing of InnoDB commands. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the service account.
Other sources
Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB). Supported versions that are affected are 8.0.25 and prior. Difficult to exploit vulnerability allows unauthenticated 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
— Red Hat
Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB). Supported versions that are affected are 8.0.25 and prior. Difficult to exploit vulnerability allows unauthenticated 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 5.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H).
— MITRE
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2021-2429?
CVE-2021-2429 is categorized as a difficult to exploit vulnerability with a moderate severity rating.
How do I fix CVE-2021-2429?
To fix CVE-2021-2429, upgrade MySQL Server to version 8.0.26 or later.
Who is affected by CVE-2021-2429?
CVE-2021-2429 affects MySQL Server versions 8.0.25 and earlier.
What type of attack is possible with CVE-2021-2429?
CVE-2021-2429 allows unauthenticated attackers with network access to compromise the MySQL Server.
Which MySQL Server components are involved in CVE-2021-2429?
CVE-2021-2429 specifically involves the InnoDB component of the MySQL Server.