CVE-2019-2814 in MySQL Server
Summary
by MITRE
Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: InnoDB). Supported versions that are affected are 8.0.16 and prior. Difficult to exploit vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of MySQL Server accessible data. CVSS 3.0 Base Score 2.2 (Integrity impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N).
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Analysis
by VulDB Data Team • 11/06/2024
The vulnerability identified as CVE-2019-2814 resides within the InnoDB storage engine of Oracle MySQL database systems, specifically affecting versions 8.0.16 and earlier. This weakness represents a significant concern for database security as it targets the core storage component responsible for data persistence and transaction management. The vulnerability operates at a fundamental level within the database architecture, potentially undermining the integrity of stored data through unauthorized modifications that can occur without proper authorization mechanisms.
The technical flaw manifests as a privilege escalation issue that requires an attacker to possess high privileges and network access through multiple protocols to exploit successfully. This classification places the vulnerability in the context of CWE-284, which deals with improper access control mechanisms, specifically focusing on inadequate privilege management within database systems. The attack vector requires network connectivity and assumes the attacker already holds elevated privileges, making this a sophisticated threat that typically targets internal network environments where such credentials might be compromised. The CVSS 3.0 scoring of 2.2 reflects the moderate impact on integrity while maintaining a low impact on confidentiality and availability, indicating that the primary concern lies in unauthorized data modification rather than complete system compromise.
From an operational standpoint, successful exploitation of this vulnerability enables attackers to perform unauthorized update, insert, or delete operations on specific MySQL Server data accessible to the compromised system. This capability represents a serious integrity violation that can lead to data corruption, manipulation of business-critical information, or potential financial losses through fraudulent transactions. The impact extends beyond simple data modification as it can compromise the trustworthiness of database records and potentially affect downstream applications that depend on accurate data integrity. Organizations using affected MySQL versions face risks of data tampering that could go undetected for extended periods, particularly if proper monitoring and audit mechanisms are not in place.
The mitigation strategy for CVE-2019-2814 primarily involves upgrading to MySQL version 8.0.17 or later, which contains the necessary patches to address the privilege escalation vulnerability. Additionally, organizations should implement network segmentation to limit access to database servers and enforce strict access controls through proper user privilege management. Security measures including regular vulnerability assessments, network monitoring, and database activity auditing should be enhanced to detect potential exploitation attempts. The ATT&CK framework categorizes this vulnerability under privilege escalation techniques, specifically targeting database server compromise through improper access control mechanisms. Organizations should also consider implementing database firewalls and intrusion detection systems to monitor for suspicious network activity targeting database services, while maintaining comprehensive backup strategies to ensure data recovery capabilities in case of successful exploitation attempts.