CVE-2019-2587 in MySQL Server
Summary
by MITRE
Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Partition). Supported versions that are affected are 8.0.15 and prior. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.0 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).
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Analysis
by VulDB Data Team • 11/06/2024
The vulnerability identified as CVE-2019-2587 resides within the MySQL Server component, specifically within the Server: Partition subcomponent of Oracle MySQL. This flaw affects versions 8.0.15 and earlier, representing a significant security concern for database administrators and system operators who rely on MySQL for critical data operations. The vulnerability operates at a fundamental level within the database server's partitioning functionality, which is used to distribute data across multiple storage units for improved performance and manageability. The affected version range indicates this issue was present in the most recent major release cycle of MySQL 8.0, suggesting it was a critical flaw that required immediate attention from the MySQL development team and enterprise users.
This vulnerability manifests as an easily exploitable flaw that requires only a high privileged attacker with network access via multiple protocols to successfully compromise the MySQL Server. The attack vector is particularly concerning because it leverages network-based access, meaning that an attacker who has already gained elevated privileges within the network environment can exploit this weakness to cause severe disruptions. The CVSS 3.0 scoring system rates this vulnerability with a base score of 4.9, which falls into the medium severity category, but the availability impact rating of 'H' (high) indicates that successful exploitation can result in complete denial of service conditions. The vulnerability's characteristics align with CWE-121, which describes buffer overflow conditions, though this specific instance operates through partitioning mechanisms rather than traditional memory corruption. The attack requires minimal complexity to execute and does not require user interaction, making it particularly dangerous in environments where network access is not strictly controlled.
The operational impact of CVE-2019-2587 extends beyond simple service disruption, as successful exploitation can lead to complete denial of service conditions that may require manual intervention to restore normal operations. When an attacker successfully exploits this vulnerability, they can cause the MySQL Server to hang or experience frequently repeatable crashes, effectively rendering the database service unavailable to legitimate users and applications. This type of disruption can have cascading effects throughout enterprise systems that depend on MySQL for data storage and retrieval operations, potentially affecting business continuity and data availability. The vulnerability's impact is particularly severe in high-availability environments where database uptime is critical, as even brief periods of service interruption can result in significant business disruption. Organizations using MySQL in mission-critical applications may find that this vulnerability can be leveraged to create sustained denial of service conditions that can be difficult to recover from without proper incident response procedures in place.
Mitigation strategies for CVE-2019-2587 should focus on immediate patching of affected systems, as Oracle would have released a security update to address this specific vulnerability in the Server: Partition component. System administrators should prioritize upgrading to MySQL version 8.0.16 or later, which contains the necessary fixes to prevent exploitation. Network segmentation and access controls should be reinforced to ensure that only authorized personnel have high privileged access to MySQL servers, thereby limiting the attack surface for potential exploitation. Additionally, implementing proper monitoring and alerting systems can help detect unusual patterns that may indicate exploitation attempts, particularly around partitioning operations within the database. Organizations should also consider implementing intrusion detection systems that can identify network-based attacks targeting MySQL services. The remediation process should include thorough testing of the updated MySQL version in staging environments before deployment to production systems to ensure compatibility with existing applications and database configurations. According to ATT&CK framework, this vulnerability would fall under the T1499.004 technique category, specifically for network denial of service attacks, and may also relate to T1071.004 for application layer protocol usage in the exploitation process.