CVE-2022-21316 in MySQL Cluster
Summary
by MITRE • 01/19/2022
Vulnerability in the MySQL Cluster product of Oracle MySQL (component: Cluster: General). Supported versions that are affected are 7.4.34 and prior, 7.5.24 and prior, 7.6.20 and prior and 8.0.27 and prior. Difficult to exploit vulnerability allows high privileged attacker with logon to the infrastructure where 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:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H).
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Analysis
by VulDB Data Team • 01/24/2022
The vulnerability identified as CVE-2022-21316 represents a significant security weakness within Oracle MySQL Cluster implementations that affects multiple version branches including 7.4.34 and earlier, 7.5.24 and earlier, 7.6.20 and earlier, and 8.0.27 and earlier. This issue resides within the Cluster: General component of the MySQL Cluster product suite and demonstrates characteristics that align with CWE-284 Access Control vulnerabilities, specifically involving improper privilege management within database cluster environments. The vulnerability requires a high-privileged attacker who already possesses legitimate access to the infrastructure hosting the MySQL Cluster, indicating that the attack vector involves an insider threat or compromised legitimate credentials rather than external exploitation.
The technical nature of this vulnerability stems from inadequate access controls that allow authenticated users with elevated privileges to potentially escalate their control over the cluster environment. The CVSS 3.1 scoring of 6.3 reflects the moderate to high severity impact across confidentiality, integrity, and availability domains, with the attack complexity being high due to the requirement for privileged access and the need for human interaction from individuals other than the primary attacker. This human interaction requirement suggests that successful exploitation may involve social engineering elements or require coordination with legitimate users within the organization. The vulnerability's classification under the ATT&CK framework would likely map to privilege escalation techniques and potentially lateral movement within the database infrastructure.
From an operational standpoint, successful exploitation of this vulnerability could result in complete compromise of the MySQL Cluster environment, allowing attackers to gain full control over database operations, data manipulation, and system configuration. The impact extends beyond simple data theft to include potential disruption of business operations through availability compromise and integrity violations that could affect critical business data. Organizations running affected MySQL Cluster versions face significant risk if proper access controls and monitoring are not implemented, particularly in environments where multiple administrators or users have elevated privileges. The vulnerability's exploitation requires human interaction from non-attackers, suggesting that social engineering or coercion of legitimate users could be part of the attack methodology.
Organizations should prioritize immediate remediation by upgrading to supported versions that address this vulnerability, as outlined in Oracle's security advisories and patch releases. System administrators should implement comprehensive access control policies, including principle of least privilege enforcement, regular privilege reviews, and monitoring for unusual administrative activities. Network segmentation and enhanced logging capabilities should be deployed to detect potential exploitation attempts, particularly focusing on authentication events and administrative command executions within the cluster environment. The vulnerability highlights the importance of proper access control implementation and the need for continuous security monitoring in database cluster deployments to prevent unauthorized privilege escalation and maintain system integrity.