CVE-2023-32025 in ODBC Driver for SQL Server
Summary
by MITRE • 06/16/2023
Microsoft ODBC Driver for SQL Server Remote Code Execution Vulnerability
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Analysis
by VulDB Data Team • 06/16/2023
This vulnerability involves a remote code execution flaw in the Microsoft ODBC Driver for SQL Server that allows attackers to execute arbitrary code on affected systems. The issue stems from improper input validation within the driver's handling of specific database connection parameters and query structures. Attackers can exploit this weakness by crafting malicious SQL queries or connection strings that trigger buffer overflows or memory corruption conditions when processed by the vulnerable driver components. The vulnerability affects multiple versions of the Microsoft ODBC Driver for SQL Server and represents a critical security risk for organizations relying on database connectivity through this interface.
The technical implementation of this vulnerability demonstrates characteristics consistent with CWE-121, which addresses stack-based buffer overflow conditions in software applications. The flaw manifests when the ODBC driver processes specially crafted input data during connection establishment or query execution phases. Attackers typically leverage this weakness by submitting malformed parameters that cause memory corruption in the driver's processing routines, potentially leading to arbitrary code execution with the privileges of the affected application process. The attack surface is particularly broad since the ODBC driver is commonly used across various Microsoft applications and third-party software solutions that require SQL Server connectivity.
The operational impact of this vulnerability extends beyond simple remote code execution capabilities as it can enable attackers to establish persistent access, escalate privileges, and move laterally within network environments. Organizations utilizing affected versions of the Microsoft ODBC Driver face significant risks including data breaches, system compromise, and potential denial of service conditions. The vulnerability is particularly concerning because it can be exploited without authentication in many scenarios, making it a prime target for automated exploitation tools. Network monitoring systems should be configured to detect anomalous database connection patterns and unusual query execution behaviors that may indicate exploitation attempts.
Mitigation strategies for this vulnerability include immediate deployment of Microsoft security updates and patches released through regular security bulletins. Organizations should implement network segmentation controls to limit access to SQL Server instances and restrict the attack surface where the vulnerable driver is installed. Additional protective measures involve disabling unnecessary database connectivity features, implementing strict input validation at application layers, and monitoring database connection logs for suspicious activities. Security teams should also consider deploying intrusion detection systems configured to identify known exploitation patterns associated with this vulnerability class. The ATT&CK framework categorizes this type of vulnerability under the T1203 technique for Exploitation for Client Execution, highlighting the need for comprehensive endpoint protection alongside traditional network security controls. Regular vulnerability assessments and penetration testing should be conducted to verify the effectiveness of implemented mitigations and identify potential additional attack vectors within database infrastructure deployments.