CVE-2016-0609 in MySQL Server
Summary
by MITRE
Unspecified vulnerability in Oracle MySQL 5.5.46 and earlier, 5.6.27 and earlier, and 5.7.9 allows remote authenticated users to affect availability via unknown vectors related to privileges.
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Analysis
by VulDB Data Team • 07/05/2022
The vulnerability identified as CVE-2016-0609 represents a significant security weakness within Oracle MySQL database systems affecting multiple version ranges including 5.5.46 and earlier, 5.6.27 and earlier, and 5.7.9 and earlier. This issue falls under the category of availability impact, meaning that authenticated remote attackers can potentially disrupt database services through unspecified vectors related to privilege management. The vulnerability specifically targets the privilege handling mechanisms within MySQL, which could allow malicious actors with valid credentials to manipulate database access controls in ways that compromise system availability.
The technical nature of this flaw lies in the improper handling of privileges within the MySQL database engine, where authenticated users can exploit weaknesses in the privilege validation system to potentially cause denial of service conditions. This type of vulnerability is particularly dangerous because it operates at the privilege management layer, which is fundamental to database security architecture. The unspecified vectors suggest that the attack could manifest through various pathways related to privilege escalation or privilege manipulation, making it difficult to predict exact exploitation methods but confirming the severity of the underlying issue.
From an operational perspective, this vulnerability creates substantial risk for organizations relying on MySQL databases, as authenticated attackers can potentially disrupt database availability without requiring elevated privileges beyond standard user access. The impact extends beyond simple service disruption to include potential data integrity concerns and business continuity issues. Organizations may experience unauthorized access to database resources, privilege escalation scenarios, or complete service outages depending on how the vulnerability is exploited. The remote nature of the attack means that threats can originate from anywhere on the network, making it particularly challenging to defend against.
Security professionals should implement immediate mitigations including applying the latest Oracle security patches and updates, reviewing and restricting database user privileges, and monitoring for unusual authentication patterns. The vulnerability aligns with CWE-269, which covers improper privilege management, and could potentially map to ATT&CK techniques involving privilege escalation and denial of service operations. Organizations should also consider implementing network segmentation, access control lists, and comprehensive monitoring solutions to detect and prevent exploitation attempts. Regular security assessments and vulnerability scanning should be conducted to identify similar issues within the database infrastructure and ensure that all systems remain protected against known vulnerabilities.