CVE-2012-0494 in MySQL Server
Summary
by MITRE
Unspecified vulnerability in the MySQL Server component in Oracle MySQL 5.5.x allows local users to affect availability via unknown vectors.
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Analysis
by VulDB Data Team • 01/12/2025
The vulnerability identified as CVE-2012-0494 represents a significant security weakness within Oracle MySQL Server version 5.5.x that exposes the system to potential availability disruptions. This unspecified vulnerability specifically targets the MySQL Server component and creates a pathway for local attackers to compromise system availability through unknown vectors that have not been fully disclosed in public documentation. The classification as a local privilege escalation vulnerability indicates that an attacker must already have access to the system, typically through legitimate user accounts or compromised credentials, before exploiting this weakness to cause service disruption or denial of availability.
The technical nature of this vulnerability falls under the category of availability attacks that can lead to system instability and service interruption. While the exact mechanism remains unspecified, such vulnerabilities typically exploit weaknesses in system resource management, memory handling, or process control that can result in crashes, hangs, or other forms of service degradation. The local nature of the attack suggests that exploitation requires physical or network access to the target system, making it less immediately exploitable from remote locations but still dangerous within compromised environments or when attackers have legitimate system access.
From an operational impact perspective, this vulnerability poses substantial risk to database availability and business continuity. When local users can affect availability through unknown vectors, it creates a potential for both accidental and intentional service disruption that can impact critical database operations. The unspecified nature of the vulnerability means that organizations cannot fully assess their exposure or implement targeted defensive measures until the precise attack vectors are identified. This type of vulnerability can lead to extended downtime, data access issues, and potential cascading failures in applications that depend on MySQL services, particularly in environments where database availability is mission-critical.
The vulnerability aligns with common attack patterns documented in the MITRE ATT&CK framework under the availability disruption category, where adversaries seek to compromise system resources or services to prevent legitimate users from accessing critical functionality. Organizations should consider this vulnerability as part of broader security assessments that include system hardening, access controls, and monitoring for unusual system behavior. The lack of specific information about exploitation methods makes it particularly challenging for security teams to implement effective countermeasures, highlighting the importance of maintaining up-to-date security patches and monitoring for emerging threat intelligence related to MySQL vulnerabilities.
Security practitioners should implement comprehensive monitoring solutions that can detect unusual system behavior or resource consumption patterns that might indicate exploitation attempts. Regular patch management processes become critical in addressing such vulnerabilities, particularly when specific exploitation methods remain unknown. The vulnerability also underscores the importance of principle of least privilege implementations and regular security audits to prevent unauthorized local access that could enable exploitation. Organizations should consider implementing intrusion detection systems and behavioral analytics to identify potential exploitation attempts before they cause significant availability issues.
This vulnerability type demonstrates the ongoing challenges in database security where even seemingly minor weaknesses can have substantial impact on system availability. The unspecified nature of the attack vectors means that organizations must maintain proactive security postures and avoid complacency in their security practices. Regular security assessments, including vulnerability scanning and penetration testing, should be conducted to identify and remediate similar weaknesses in database environments. The incident also highlights the need for comprehensive incident response planning that addresses availability-related threats and ensures rapid recovery from service disruption events. Proper logging and audit trail implementation becomes essential for forensic analysis and understanding the true scope of exploitation attempts.