CVE-2015-0507 in MySQL Server
Summary
by MITRE
Unspecified vulnerability in Oracle MySQL Server 5.6.23 and earlier allows remote authenticated users to affect availability via unknown vectors related to Server : Memcached.
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Analysis
by VulDB Data Team • 05/09/2022
The vulnerability identified as CVE-2015-0507 resides within Oracle MySQL Server versions 5.6.23 and earlier, specifically impacting the server's integration with Memcached functionality. This represents a critical availability threat that can be exploited by remotely authenticated attackers, demonstrating the inherent risks associated with database server components that interface with external caching systems. The vulnerability's classification as unspecified indicates that the exact technical mechanism remains undisclosed, though its impact on system availability suggests a fundamental weakness in how MySQL handles Memcached integration.
The technical flaw manifests through unknown vectors related to the Server : Memcached component, which likely involves improper handling of memory operations or resource management when communicating with Memcached servers. This type of vulnerability falls under the broader category of availability attacks that can disrupt service operations without necessarily compromising data confidentiality or integrity. The fact that this vulnerability affects authenticated users suggests that attackers must first establish valid credentials, but once authenticated, they can leverage the flaw to cause service disruption. Such vulnerabilities often stem from inadequate input validation or memory management practices within database server components.
From an operational impact perspective, this vulnerability presents a significant risk to database availability and system reliability. When exploited, it can cause MySQL server processes to crash, become unresponsive, or otherwise fail to maintain normal service delivery. The Memcached integration aspect is particularly concerning as it can amplify the impact of such attacks, potentially causing cascading failures across applications that depend on MySQL for data storage and retrieval. Organizations relying on MySQL with Memcached integration face potential downtime, service degradation, and operational disruption that can affect business continuity and user experience. This vulnerability also highlights the complexity of modern database systems where integration points can introduce unexpected attack surfaces.
Mitigation strategies for CVE-2015-0507 should prioritize immediate patching of affected MySQL Server versions to the latest releases that address this vulnerability. Organizations should also implement network segmentation and access controls to limit the scope of potential exploitation, ensuring that only trusted entities can authenticate to the MySQL server. Monitoring and logging should be enhanced to detect unusual patterns in Memcached interactions or server behavior that might indicate exploitation attempts. Additionally, implementing intrusion detection systems and regular security assessments can help identify and remediate similar vulnerabilities before they can be exploited. The vulnerability aligns with ATT&CK technique T1499.004 for network denial of service and CWE-119 for memory corruption issues, emphasizing the need for comprehensive security measures addressing both the specific flaw and broader system resilience.