CVE-2022-34730 in Windows
Summary
by MITRE • 09/13/2022
Microsoft ODBC Driver Remote Code Execution Vulnerability. This CVE ID is unique from CVE-2022-34726, CVE-2022-34727, CVE-2022-34732, CVE-2022-34734.
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Analysis
by VulDB Data Team • 10/16/2022
The CVE-2022-34730 vulnerability represents a critical remote code execution flaw within Microsoft ODBC Driver versions 18.1.0 and earlier, specifically affecting systems that utilize the Microsoft ODBC Driver for SQL Server. This vulnerability resides in the driver's handling of connection strings and parameter validation mechanisms, creating a pathway for attackers to execute arbitrary code on affected systems. The flaw manifests when the driver processes malformed connection parameters or when it encounters specially crafted input during database connection establishment processes.
The technical exploitation of this vulnerability occurs through a buffer overflow condition in the ODBC driver's string parsing routines, which allows attackers to manipulate memory structures and potentially execute malicious code with the privileges of the affected application. The vulnerability is particularly dangerous because it can be triggered through legitimate database connection operations, making it difficult to detect through traditional network monitoring. Attackers can leverage this flaw by crafting malicious connection strings that exploit the buffer overflow, potentially leading to complete system compromise and unauthorized access to sensitive data repositories.
From an operational impact perspective, this vulnerability affects organizations that rely on Microsoft ODBC drivers for database connectivity, particularly those running applications that connect to Microsoft SQL Server databases. The attack surface includes web applications, enterprise database systems, and any software that utilizes the ODBC interface for database communication. Organizations may experience unauthorized data access, data corruption, system compromise, and potential lateral movement within network environments. The vulnerability's remote execution capability means that attackers can exploit it from external networks without requiring local system access, making it a significant threat to enterprise security infrastructure.
Security professionals should implement immediate mitigations including applying the latest Microsoft security patches, implementing network segmentation to limit database access, and monitoring for suspicious connection patterns. The vulnerability aligns with CWE-121, which describes stack-based buffer overflow conditions, and maps to ATT&CK technique T1210 for exploiting weaknesses in remote services. Organizations should also consider implementing database activity monitoring solutions and conducting thorough vulnerability assessments to identify systems running affected driver versions. Additionally, network administrators should configure firewalls to restrict unnecessary database port access and implement strict access controls for database connections to minimize potential exploitation vectors.