CVE-2015-2639 in MySQL Server
Summary
by MITRE
Unspecified vulnerability in Oracle MySQL Server 5.6.24 and earlier allows remote authenticated users to affect integrity via unknown vectors related to Server : Security : Firewall.
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Analysis
by VulDB Data Team • 06/02/2022
The vulnerability identified as CVE-2015-2639 represents a security flaw within Oracle MySQL Server versions 5.6.24 and earlier, specifically impacting the server's security firewall mechanisms. This issue affects authenticated remote users who can potentially compromise data integrity through unspecified attack vectors. The vulnerability falls under the broader category of database server security flaws that can undermine the trustworthiness of data operations within MySQL environments. Such vulnerabilities are particularly concerning as they allow attackers who have already established authentication credentials to escalate their privileges or manipulate data integrity within the database system.
The technical nature of this vulnerability lies in the MySQL Server's firewall implementation, which is designed to control access and protect database resources from unauthorized access. When a flaw exists in this security mechanism, it creates potential pathways for authenticated users to bypass normal security controls that should prevent them from modifying or corrupting data. The unspecified nature of the exact attack vectors suggests that the vulnerability could manifest through various means within the firewall subsystem, potentially involving connection handling, access control lists, or network security policies. This ambiguity in the vulnerability description indicates that the flaw may have multiple exploitation paths or that the full scope of the vulnerability was not completely disclosed at the time of the advisory.
From an operational perspective, this vulnerability creates significant risks for organizations relying on MySQL Server for critical data operations. The ability of authenticated users to compromise data integrity means that even users with legitimate access rights could potentially corrupt database contents, manipulate transaction logs, or alter critical business data. This represents a serious threat to data integrity and can lead to financial losses, compliance violations, and operational disruptions. The remote aspect of the vulnerability means that attackers do not need physical access to the system, making the attack surface broader and the risk more pronounced. Organizations may experience unauthorized data modifications, transaction integrity issues, or potential data loss that could affect business operations and regulatory compliance.
Mitigation strategies for CVE-2015-2639 should focus on immediate patching of affected MySQL Server installations to the latest available versions that contain fixes for the firewall security issues. Organizations should also implement additional monitoring and logging of database activities to detect any unusual patterns that might indicate exploitation attempts. Network segmentation and firewall rules should be reviewed to minimize the attack surface and limit the potential impact of any successful exploitation. The vulnerability aligns with CWE-284, which addresses improper access control, and may relate to ATT&CK techniques involving privilege escalation and data manipulation. Regular security assessments and database audits should be conducted to identify and remediate similar vulnerabilities in the database infrastructure. Organizations should also consider implementing database activity monitoring solutions that can detect anomalous behavior patterns and alert security teams to potential integrity violations.