CVE-2024-30006 Overview
CVE-2024-30006 is a remote code execution vulnerability in the Microsoft Windows Data Access Components (WDAC) OLE DB provider for SQL Server. This vulnerability allows attackers to execute arbitrary code on affected systems when a user connects to a malicious SQL Server database or is tricked into opening a specially crafted file that triggers the vulnerable OLE DB provider. The vulnerability stems from a use-after-free memory corruption condition (CWE-416) that can be exploited through network-based attack vectors.
Critical Impact
Successful exploitation enables remote code execution with the privileges of the current user, potentially leading to complete system compromise across all supported Windows desktop and server platforms.
Affected Products
- Microsoft Windows 10 (versions 1507, 1607, 1809, 21H2, 22H2)
- Microsoft Windows 11 (versions 21H2, 22H2, 23H2)
- Microsoft Windows Server 2008, 2012, 2016, 2019, 2022, and 2022 23H2
Discovery Timeline
- May 14, 2024 - CVE-2024-30006 published to NVD
- January 16, 2025 - Last updated in NVD database
Technical Details for CVE-2024-30006
Vulnerability Analysis
This vulnerability exists in the WDAC OLE DB provider for SQL Server, which is a core Windows component used for database connectivity operations. The flaw is classified as a use-after-free (CWE-416) memory corruption vulnerability, where the application continues to use a memory reference after it has been freed, leading to potential memory corruption and code execution.
The attack requires user interaction, meaning an attacker must convince a victim to connect to a malicious SQL Server or open a specially crafted file. However, once exploited, the attacker gains the ability to execute code with the same privileges as the user running the vulnerable application. If the user has administrative privileges, the attacker could take complete control of the affected system.
The vulnerability affects a wide range of Windows operating systems spanning both client and server editions, making it a significant concern for enterprise environments that rely on SQL Server connectivity.
Root Cause
The root cause is a use-after-free condition in the WDAC OLE DB provider for SQL Server. This occurs when the provider incorrectly manages memory during database connection operations, leaving dangling pointers that can be exploited by an attacker controlling a malicious SQL Server endpoint. When the freed memory is subsequently accessed, it can lead to arbitrary code execution in the context of the current process.
Attack Vector
The attack vector is network-based, requiring the victim to establish a connection to a malicious SQL Server controlled by the attacker. This can be achieved through several methods:
- Convincing a user to connect to a malicious SQL Server through a phishing campaign
- Distributing malicious files (such as UDL connection files) that trigger vulnerable OLE DB connections when opened
- Man-in-the-middle attacks that redirect legitimate database connections to attacker-controlled servers
The vulnerability is triggered when the OLE DB provider processes specially crafted responses from the malicious server, causing the use-after-free condition during memory operations.
Detection Methods for CVE-2024-30006
Indicators of Compromise
- Unusual outbound connections to unknown SQL Server endpoints on port 1433 or non-standard ports
- Unexpected crashes or errors in applications using OLE DB providers for SQL Server connectivity
- Suspicious process spawning from database-connected applications
- Memory corruption signatures in crash dumps involving msoledbsql.dll or related OLE DB components
Detection Strategies
- Monitor network traffic for suspicious SQL Server connection attempts to external or unknown IP addresses
- Implement application whitelisting to detect unauthorized code execution from OLE DB provider processes
- Deploy behavioral detection rules that identify unusual process trees originating from database applications
- Enable Windows Event Log auditing for database connectivity events and connection failures
Monitoring Recommendations
- Configure SIEM rules to alert on connections to SQL Server endpoints outside of approved database infrastructure
- Monitor for file access events involving .udl (Universal Data Link) files from untrusted sources
- Track process behavior of applications using OLE DB providers for anomalous activity
- Enable memory integrity protections and monitor for kernel-level exploitation attempts
How to Mitigate CVE-2024-30006
Immediate Actions Required
- Apply the Microsoft security update for CVE-2024-30006 immediately on all affected systems
- Restrict outbound SQL Server connectivity to only approved database endpoints through firewall rules
- Educate users about the risks of connecting to untrusted database servers or opening suspicious connection files
- Review and harden database connection configurations across the enterprise
Patch Information
Microsoft released security updates addressing this vulnerability as part of their May 2024 Patch Tuesday release cycle. Administrators should consult the Microsoft Security Update Guide for specific KB articles and update packages applicable to their Windows versions. The patches address the use-after-free condition by implementing proper memory management in the affected OLE DB provider.
Workarounds
- Block outbound connections to unknown SQL Server endpoints at the network perimeter
- Implement application control policies to prevent unauthorized OLE DB connections
- Configure firewall rules to restrict SQL Server connectivity to known, trusted database servers only
- Disable or restrict OLE DB providers where they are not required for business operations
# Example: Block outbound SQL Server connections to non-approved endpoints using Windows Firewall
netsh advfirewall firewall add rule name="Block Suspicious SQL Server" dir=out action=block protocol=tcp remoteport=1433 remoteip=any
# Note: Adjust the remoteip parameter to allow connections only to approved database servers
# Example allowing specific server: remoteip=192.168.1.100
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
