CVE-2024-20654 Overview
CVE-2024-20654 is a remote code execution vulnerability affecting the Microsoft ODBC Driver across a wide range of Windows operating systems. This vulnerability allows an authenticated attacker with low privileges to execute arbitrary code on a target system when a user interacts with malicious content. The attack requires user interaction but can be launched remotely over the network, making it a significant threat to enterprise environments where ODBC connections are commonly used for database access.
Critical Impact
Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code with the privileges of the current user, potentially leading to complete system compromise, data exfiltration, or lateral movement within an organization's network.
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
Discovery Timeline
- January 9, 2024 - CVE-2024-20654 published to NVD
- November 21, 2024 - Last updated in NVD database
Technical Details for CVE-2024-20654
Vulnerability Analysis
This remote code execution vulnerability exists within the Microsoft ODBC Driver component, which is a critical middleware layer responsible for facilitating database connectivity across Windows systems. The vulnerability is classified under CWE-190 (Integer Overflow or Wraparound), indicating that the underlying issue involves improper handling of integer values during data processing operations.
When the ODBC driver processes specially crafted data, an integer overflow condition can occur, leading to memory corruption. This memory corruption can then be leveraged by an attacker to gain control of program execution flow and ultimately execute arbitrary code on the target system. The attack requires user interaction, meaning a victim must be enticed to connect to a malicious database server or process malicious data through an ODBC connection.
Root Cause
The root cause of CVE-2024-20654 is an integer overflow vulnerability (CWE-190) within the Microsoft ODBC Driver. Integer overflow conditions occur when arithmetic operations produce a result that exceeds the maximum value that can be stored in the designated integer type. In this case, the ODBC driver fails to properly validate or handle integer values during data processing, allowing an attacker to trigger an overflow condition that corrupts memory structures used by the driver.
Attack Vector
The attack vector for this vulnerability is network-based, requiring low privileges and user interaction. An attacker could exploit this vulnerability through several scenarios:
Malicious Database Server: An attacker sets up a rogue database server that sends specially crafted responses designed to trigger the integer overflow when a victim connects using the ODBC driver.
Man-in-the-Middle Attack: An attacker intercepts ODBC traffic and injects malicious data that exploits the vulnerability.
Social Engineering: An attacker tricks a user into opening a file or application that initiates an ODBC connection to an attacker-controlled resource.
The exploitation mechanism involves sending specially crafted data through the ODBC connection that causes an integer overflow condition. This overflow leads to memory corruption, which the attacker can leverage to redirect execution flow and run arbitrary code with the privileges of the user running the vulnerable application.
Detection Methods for CVE-2024-20654
Indicators of Compromise
- Unusual ODBC driver crashes or error events in Windows Event logs
- Unexpected outbound connections to unknown database servers
- Anomalous memory access patterns in processes utilizing ODBC connectivity
- Suspicious odbcad32.exe or related ODBC process behavior
Detection Strategies
- Monitor Windows Event Logs for ODBC driver crash events or application errors related to database connectivity
- Implement network monitoring to detect connections to unauthorized or suspicious database servers
- Deploy endpoint detection solutions capable of identifying memory corruption exploitation attempts
- Utilize SentinelOne's behavioral AI to detect anomalous process behavior associated with ODBC exploitation
Monitoring Recommendations
- Enable enhanced logging for ODBC connections and database access attempts
- Configure alerts for unexpected ODBC driver activity outside of normal business operations
- Monitor for processes spawned by ODBC-utilizing applications with unusual command-line parameters
- Implement network segmentation to control and monitor database traffic flows
How to Mitigate CVE-2024-20654
Immediate Actions Required
- Apply Microsoft security updates released in the January 2024 Patch Tuesday cycle immediately
- Audit all systems for affected Windows versions and prioritize patching based on exposure
- Restrict ODBC connections to trusted, internal database servers where possible
- Implement network-level controls to limit outbound database connectivity
Patch Information
Microsoft has released security patches addressing CVE-2024-20654 as part of their January 2024 security updates. Organizations should apply the appropriate patches for their Windows versions immediately. Detailed patch information and download links are available in the Microsoft Security Response Center Advisory. The patches address the integer overflow condition in the ODBC driver by implementing proper bounds checking and validation of integer values during data processing.
Workarounds
- Restrict ODBC connections to known, trusted database servers using firewall rules
- Disable or remove unused ODBC data sources and drivers from workstations
- Implement application allowlisting to control which applications can utilize ODBC connectivity
- Educate users about the risks of connecting to untrusted database sources
# Example: Review configured ODBC data sources on Windows systems
# List User DSNs
reg query "HKCU\Software\ODBC\ODBC.INI\ODBC Data Sources"
# List System DSNs
reg query "HKLM\Software\ODBC\ODBC.INI\ODBC Data Sources"
# Review ODBC driver versions for patch verification
reg query "HKLM\Software\ODBC\ODBCINST.INI" /s
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
