CVE-2019-2584 in MySQL Server
Summary
by MITRE
Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Security: Privileges). 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 • 11/05/2024
The vulnerability identified as CVE-2019-2584 resides within Oracle MySQL Server's privilege management subsystem, specifically affecting versions 8.0.15 and earlier. This issue represents a critical availability threat that stems from insufficient validation of privilege checks during certain server operations. The flaw manifests when high-privileged attackers leverage network access through multiple communication protocols to exploit the vulnerability, making it particularly dangerous in environments where MySQL servers are exposed to untrusted networks. The vulnerability's classification as easily exploitable indicates that attackers with minimal technical expertise can successfully compromise affected systems, while the CVSS score of 4.9 reflects the significant availability impact that can result from successful exploitation.
The technical nature of this vulnerability involves a privilege escalation mechanism that allows attackers to manipulate server behavior through carefully crafted requests. When exploited, the vulnerability enables unauthorized users to cause complete denial of service conditions by triggering server crashes or hangs that can be repeatedly reproduced. This behavior aligns with CWE-284, which addresses improper access control, and demonstrates how insufficient privilege validation can lead to system instability and availability loss. The attack vector requires network access and leverages the attacker's elevated privileges within the MySQL environment, making it particularly concerning for database administrators who may not fully understand the scope of access granted to various user accounts.
The operational impact of this vulnerability extends beyond simple service disruption to potentially compromise entire database infrastructures. Organizations running affected MySQL versions face significant risk of unauthorized system downtime, which can result in substantial business disruption and data accessibility issues. The vulnerability's ability to cause complete server crashes means that database services may become unavailable for extended periods, requiring manual intervention and system restarts to restore normal operations. This type of attack directly maps to ATT&CK technique T1499.004, which covers network denial of service attacks, and represents a critical concern for organizations that rely on MySQL for mission-critical applications and data storage operations.
Mitigation strategies for CVE-2019-2584 should prioritize immediate patching of affected MySQL installations to version 8.0.16 or later, which contains the necessary security fixes. Network segmentation and access control measures should be implemented to limit exposure of MySQL servers to untrusted networks, while strict privilege management should be enforced to minimize the potential impact of compromised accounts. Regular security audits should verify that user privileges are properly configured according to the principle of least privilege, and monitoring systems should be deployed to detect unusual patterns of server behavior that might indicate exploitation attempts. Organizations should also consider implementing intrusion detection systems that can identify and alert on suspicious network traffic patterns associated with this vulnerability, ensuring comprehensive protection against potential exploitation attempts.