CVE-2022-21317 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 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 unauthorized read access to a subset of MySQL Cluster accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of MySQL Cluster. CVSS 3.1 Base Score 2.9 (Confidentiality and Availability impacts). CVSS Vector: (CVSS:3.1/AV:A/AC:H/PR:H/UI:R/S:U/C:L/I:N/A:L).
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Analysis
by VulDB Data Team • 01/24/2022
The vulnerability identified as CVE-2022-21317 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 vulnerability operates within the Cluster: General component of the MySQL Cluster product, which serves as the foundational architecture for distributed database operations. The affected versions indicate a broad impact across the MySQL Cluster ecosystem, suggesting that organizations running any of these specific versions face potential exposure to this security flaw.
The technical nature of this vulnerability requires a specific set of conditions for exploitation to occur successfully. Attackers must possess high privileged access to the physical communication segment that connects to the hardware hosting the MySQL Cluster infrastructure. This prerequisite places the vulnerability in the category of difficult-to-exploit issues, as it requires not only elevated privileges but also physical network access to the target environment. The CVSS score of 2.9 reflects the moderate severity level, with confidentiality and availability impacts rated as low to moderate. The attack vector AV:A indicates that network access is required, while the high attack complexity AC:H suggests that sophisticated techniques are necessary for successful exploitation.
The operational impact of this vulnerability manifests in two primary areas: unauthorized read access to a subset of MySQL Cluster accessible data and the ability to cause partial denial of service conditions. The unauthorized data access capability represents a confidentiality risk where attackers can potentially extract sensitive information from the database cluster, though the scope is limited to a subset of accessible data rather than complete database compromise. The partial denial of service component introduces availability concerns that can disrupt database operations and potentially impact business continuity. The requirement for human interaction from someone other than the attacker indicates that social engineering or insider threat scenarios may be involved in successful exploitation attempts.
This vulnerability aligns with CWE-284 (Improper Access Control) and CWE-310 (Cryptographic Issues) categories, reflecting the access control weaknesses and potential cryptographic vulnerabilities that enable the attack vectors. The ATT&CK framework classification would place this under privilege escalation and credential access techniques, specifically targeting the network infrastructure layer where the MySQL Cluster operates. Organizations should consider this vulnerability as part of a broader security assessment that includes network segmentation, access control policies, and monitoring of network communications to detect potential exploitation attempts.
The mitigation strategy for CVE-2022-21317 requires immediate attention through version upgrades to patched releases of the MySQL Cluster software. Organizations should prioritize updating their systems to versions beyond the affected releases mentioned in the vulnerability description. Network segmentation and access control measures should be strengthened to limit physical access to the communication segments where MySQL Cluster instances operate. Additionally, implementing comprehensive monitoring solutions that can detect unusual network activity or unauthorized access attempts to the database infrastructure will provide early warning capabilities. Regular security assessments and vulnerability scanning should be conducted to identify similar weaknesses in the database infrastructure and ensure that all components maintain current security patches and configurations.