CVE-2022-21334 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-2022-21334 represents a significant security weakness within Oracle MySQL Cluster's implementation, specifically affecting versions 8.0.27 and earlier. This flaw resides in the Cluster: General component of the MySQL Cluster product, which serves as the foundational architecture for distributed database operations. The vulnerability's classification as difficult to exploit indicates that while the attack vector is not trivial, it remains a serious concern for organizations relying on MySQL Cluster deployments. The attack requires an adversary to possess high privileged access to the physical communication segment connected to the hardware hosting the MySQL Cluster, suggesting that the threat actor must already have substantial network-level access to the infrastructure.
The technical nature of this vulnerability stems from insufficient security controls within the cluster communication protocols, allowing a sophisticated attacker with access to the physical network segment to potentially compromise the entire MySQL Cluster environment. The CVSS 3.1 score of 6.3 reflects the moderate to high severity impact across all three core security principles: confidentiality, integrity, and availability. The attack vector assessment of AV:A indicates that physical access to the communication segment is required, while the high privilege requirement of PR:H suggests that the attacker must already possess elevated access rights. The human interaction requirement of UI:R means that successful exploitation necessitates some form of assistance or cooperation from individuals other than the primary attacker, potentially indicating a social engineering component or requiring specific operational conditions to be met.
The operational impact of this vulnerability extends beyond simple data compromise, as successful exploitation can lead to complete takeover of the MySQL Cluster. This represents a critical threat to database availability and integrity, potentially allowing attackers to manipulate or destroy critical business data while simultaneously gaining unauthorized access to sensitive information stored within the cluster. The implications are particularly severe for organizations relying on MySQL Cluster for mission-critical applications where database availability and data integrity are paramount. The vulnerability's classification under CWE (Common Weakness Enumeration) would likely align with weaknesses related to insufficient network segmentation or inadequate communication security controls, making it a prime target for attackers seeking to establish persistent access within enterprise environments.
Organizations must implement comprehensive mitigation strategies to address this vulnerability, including immediate patching of affected MySQL Cluster versions to 8.0.28 or later, which would contain the identified security flaw. Network segmentation and access control measures should be strengthened to limit physical access to communication segments, while monitoring systems should be enhanced to detect anomalous network behavior that might indicate exploitation attempts. The implementation of network intrusion detection systems and regular security assessments can help identify potential exploitation attempts before they result in successful compromises. Additionally, organizations should conduct thorough risk assessments to determine the scope of their exposure and implement layered security approaches that include both technical controls and administrative procedures to reduce the likelihood of successful exploitation. The vulnerability's characteristics align with ATT&CK techniques focused on privilege escalation and network infiltration, making it essential for security teams to consider these threat patterns when developing their defensive strategies.