CVE-2021-35621: Oracle MySQL Cluster Data Node Buffer Overflow Remote Code Execution Vulnerability
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Oracle MySQL Cluster. Authentication is not required to exploit this vulnerability. The specific flaw exists within the processing of Data Node jobs. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a buffer. An attacker can leverage this vulnerability to execute code in the context of the service account.
Other sources
Vulnerability in the MySQL Cluster product of Oracle MySQL (component: Cluster: General). Supported versions that are affected are 7.4.33 and prior, 7.5.23 and prior, 7.6.19 and prior and 8.0.26 and prior. Difficult to exploit vulnerability allows high privileged attacker with access to the physical communication segment attached to the hardware where the MySQL Cluster executes to compromise MySQL Cluster. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in takeover of MySQL Cluster. CVSS 3.1 Base Score 6.3 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:A/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H).
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2021-35621?
CVE-2021-35621 has a critical severity rating due to its potential for remote code execution without authentication.
How do I fix CVE-2021-35621?
To fix CVE-2021-35621, upgrade your Oracle MySQL Cluster to the latest patched version provided by Oracle.
Which versions of Oracle MySQL Cluster are affected by CVE-2021-35621?
CVE-2021-35621 affects Oracle MySQL Cluster versions from 7.4.0 to 7.4.33, 7.5.0 to 7.5.23, 7.6.0 to 7.6.19, and 8.0.0 to 8.0.26.
Does CVE-2021-35621 require authentication to exploit?
No, CVE-2021-35621 does not require authentication, making it a high-risk vulnerability.
What impact does CVE-2021-35621 have on my system?
Exploitation of CVE-2021-35621 could allow remote attackers to execute arbitrary code on affected installations of Oracle MySQL Cluster.