CVE-2025-9273 in API Server
Summary
by MITRE • 09/02/2025
CData API Server MySQL Misconfiguration Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of CData API Server. Authentication is required to exploit this vulnerability.
The specific flaw exists within the usage of MySQL connections. When connecting to a MySQL server, the product enables an option that gives the MySQL server permission to request local files from the MySQL client. An attacker can leverage this vulnerability to disclose information in the context of NETWORK SERVICE. Was ZDI-CAN-23950.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 09/03/2025
The CVE-2025-9273 vulnerability represents a critical information disclosure flaw within the CData API Server MySQL integration that exposes organizations to significant security risks. This vulnerability specifically targets the MySQL connection handling mechanisms within the CData API Server product, creating an attack vector that can be exploited by authenticated remote adversaries. The flaw stems from improper configuration of MySQL client-server communication protocols, where the product enables a dangerous option that permits the MySQL server to request local files from the client system. This misconfiguration creates a pathway for unauthorized data exposure that can compromise system integrity and confidentiality. The vulnerability requires authentication to exploit, but once accessed, it allows attackers to leverage the MySQL connection permissions to extract sensitive information from the underlying system. The attack surface is particularly concerning as it operates in the context of NETWORK SERVICE privileges, which typically provides elevated access levels within server environments.
The technical implementation of this vulnerability resides in the MySQL client configuration options that are improperly enabled within the CData API Server environment. When establishing MySQL connections, the product activates a feature that allows the MySQL server to request local files from the client system through the established connection. This functionality, while potentially useful for legitimate administrative purposes, becomes dangerous when exploited by malicious actors who can manipulate the connection to access unauthorized files. The vulnerability specifically affects installations where the MySQL client is configured with the local file access option enabled, creating a direct pathway for information disclosure attacks. The flaw demonstrates poor security configuration practices within the product's database integration layer, where default settings do not adequately protect against malicious file access requests. This type of vulnerability falls under the CWE-200 category for "Information Exposure" and represents a classic example of insecure configuration that can lead to unauthorized data access.
The operational impact of CVE-2025-9273 extends beyond simple information disclosure, as it can provide attackers with access to sensitive system components and potentially enable further exploitation. When operating in the NETWORK SERVICE context, the vulnerability can expose system files, configuration data, and potentially database credentials that could facilitate additional attacks. The attack requires authentication, which suggests that the vulnerability may be leveraged by insiders or compromised accounts, though it could also be exploited by external attackers who have gained valid credentials through other means. The exposure of local files through MySQL connections can potentially reveal system architecture details, application configurations, and other sensitive information that could aid in planning more sophisticated attacks. This vulnerability aligns with ATT&CK technique T1083 for "File and Directory Discovery" and could facilitate subsequent techniques involving credential access and privilege escalation. Organizations running affected versions of CData API Server face risks of data exfiltration, system compromise, and potential regulatory compliance violations due to unauthorized information disclosure.
Organizations should implement immediate mitigations to address this vulnerability through configuration hardening and access controls. The primary remediation involves disabling the local file access option in MySQL client configurations within the CData API Server environment, ensuring that the dangerous permission settings are not enabled during MySQL connections. Security administrators should conduct thorough configuration reviews to identify and disable any unnecessary file access permissions that may exist within the MySQL integration layer. Network segmentation and access control measures should be strengthened to limit authentication access to the CData API Server, reducing the attack surface for potential exploitation. Regular security assessments should be performed to identify similar misconfigurations within database integration components, as this vulnerability demonstrates the importance of proper privilege management and secure configuration practices. Additionally, organizations should implement monitoring solutions to detect unusual file access patterns that may indicate exploitation attempts. The vulnerability highlights the critical importance of following security best practices for database integration and demonstrates how seemingly benign configuration options can create significant security risks when improperly implemented. This issue underscores the necessity of regular security audits and configuration reviews to prevent the exploitation of similar vulnerabilities in database connectivity components.