CVE-2014-0430 in MySQL Server
Summary
by MITRE
Unspecified vulnerability in the MySQL Server component in Oracle MySQL 5.6.13 and earlier allows remote authenticated users to affect availability via unknown vectors related to Performance Schema.
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Analysis
by VulDB Data Team • 06/08/2021
The vulnerability identified as CVE-2014-0430 resides within the MySQL Server component of Oracle MySQL versions 5.6.13 and earlier, specifically impacting the Performance Schema functionality. This unspecified weakness manifests as a remote authenticated threat vector that can compromise system availability, representing a significant concern for database administrators and security professionals managing MySQL deployments. The Performance Schema in MySQL serves as a diagnostic and monitoring tool that collects runtime performance information about server operations, making it a critical component for database performance analysis and optimization. When compromised, this component can potentially disrupt normal database operations and availability.
The technical nature of this vulnerability involves a flaw within the Performance Schema implementation that allows authenticated remote attackers to exploit unknown vectors specifically related to performance monitoring functionality. This suggests that the vulnerability may involve improper handling of performance schema data structures, resource management issues, or potential denial-of-service conditions that can be triggered through carefully crafted performance schema queries or operations. The authenticated requirement indicates that attackers must first establish valid credentials to exploit this weakness, though this does not significantly reduce the risk as legitimate users with appropriate access rights could potentially leverage this vulnerability. The unspecified nature of the exact vector makes this vulnerability particularly concerning as it may involve multiple attack surfaces within the Performance Schema subsystem.
The operational impact of CVE-2014-0430 extends beyond simple service disruption to potentially affect database reliability and system stability. When exploited, this vulnerability can lead to database server unavailability, which directly impacts business continuity and data access for applications relying on MySQL services. The Performance Schema's role in collecting and maintaining performance metrics means that exploitation could result in complete system outages or require manual intervention to restore normal operations. Organizations using affected MySQL versions face significant risk as database servers could become unavailable during critical operations, potentially affecting transaction processing, data integrity, and overall system performance. This vulnerability particularly impacts environments where Performance Schema is actively enabled and used for monitoring purposes.
Mitigation strategies for CVE-2014-0430 primarily focus on upgrading to patched versions of Oracle MySQL, specifically targeting releases after MySQL 5.6.13 where the vulnerability has been addressed. Organizations should implement comprehensive patch management procedures to ensure timely deployment of security updates. Additionally, monitoring and logging should be enhanced to detect potential exploitation attempts, particularly focusing on unusual Performance Schema query patterns or resource consumption anomalies. Database administrators should consider disabling Performance Schema functionality in environments where the risk is deemed unacceptable, though this approach reduces diagnostic capabilities. Network segmentation and access controls should be strengthened to limit authentication access to MySQL servers, reducing the attack surface for potential exploitation. The vulnerability aligns with CWE-119 which addresses improper access to memory locations, and may correspond to ATT&CK techniques related to privilege escalation and denial-of-service attacks. Organizations should also implement regular security assessments and vulnerability scanning to identify similar weaknesses in their database environments and maintain updated security baselines for MySQL installations.