CVE-2022-21308 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 8.0.27 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).
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Analysis
by VulDB Data Team • 01/24/2022
The vulnerability identified as CVE-2022-21308 represents a significant security weakness within Oracle MySQL Cluster's implementation that manifests through the Cluster: General component. This flaw affects MySQL Cluster versions 8.0.27 and earlier, creating a pathway for attackers to compromise the entire cluster infrastructure. The vulnerability's classification as difficult to exploit indicates that while the attack vector requires specific conditions, the potential consequences are severe enough to warrant immediate attention. The CVSS score of 6.3 reflects the moderate to high severity impact across confidentiality, integrity, and availability domains, making it a substantial concern for database administrators and security professionals managing MySQL Cluster environments.
The technical nature of this vulnerability stems from the cluster's handling of communications within the physical network segment where MySQL Cluster operates. Attackers with physical access to the communication infrastructure can leverage this weakness to gain control over the entire MySQL Cluster system. The requirement for high privileged access to the physical communication segment suggests that while the attack may not be trivial, it represents a serious threat vector that could be exploited by attackers who have already gained significant access to the network infrastructure. The attack requires human interaction from individuals other than the attacker, indicating that social engineering or insider threat components may be involved in successful exploitation attempts.
The operational impact of CVE-2022-21308 extends beyond simple data compromise to potentially result in complete takeover of the MySQL Cluster environment. This level of compromise could enable attackers to manipulate database contents, disrupt services, steal sensitive information, or establish persistent access points within the organization's infrastructure. The availability impact is particularly concerning as cluster takeover could lead to complete service disruption, affecting business operations and potentially causing significant financial losses. Organizations relying on MySQL Cluster for critical database operations face substantial risk from this vulnerability, especially in environments where physical security controls may be insufficient or where insider threats exist.
Mitigation strategies for this vulnerability should focus on immediate patching of affected MySQL Cluster installations to version 8.0.28 or later, which contains the necessary security fixes. Network segmentation and access controls should be strengthened to limit physical access to communication segments where clusters operate. Implementation of monitoring solutions that can detect unusual network activity on cluster communication channels can help identify potential exploitation attempts. Organizations should also review their access control policies and conduct thorough security audits of their physical infrastructure to ensure that only authorized personnel have access to critical communication segments. The vulnerability aligns with CWE-284 (Improper Access Control) and may relate to ATT&CK techniques involving privilege escalation and persistence mechanisms, making comprehensive security measures essential for protecting against both current and potential future exploitation attempts.