CVE-2019-3634 : Exploit Details and Defense Strategies
Learn about CVE-2019-3634, a buffer overflow vulnerability in McAfee Data Loss Prevention (DLPe) for Windows 11.x versions prior to 11.3.2.8, allowing local users to trigger system crashes.
A vulnerability in McAfee Data Loss Prevention (DLPe) for Windows 11.x versions prior to 11.3.2.8 allows a local user to trigger a "blue screen" by sending an encrypted message to DLPe, leading to unintentional access to unallocated memory.
Understanding CVE-2019-3634
This CVE involves a buffer overflow in McAfee DLPe for Windows, impacting system stability and memory access.
What is CVE-2019-3634?
The vulnerability in McAfee DLPe for Windows 11.x versions before 11.3.2.8 enables a local user to cause a system crash by manipulating encrypted messages.
The Impact of CVE-2019-3634
- CVSS Base Score: 4.4 (Medium Severity)
- Attack Complexity: High
- Attack Vector: Local
- Availability Impact: High
- Privileges Required: Low
- User Interaction: Required
- Exploitation of this vulnerability can lead to system instability and potential data exposure.
Technical Details of CVE-2019-3634
This section provides detailed technical insights into the vulnerability.
Vulnerability Description
The buffer overflow in McAfee DLPe for Windows 11.x versions prior to 11.3.2.8 allows local users to crash the system by manipulating encrypted messages, resulting in unintended memory access.
Affected Systems and Versions
- Affected Product: Data Loss Prevention (DLPe) for Windows
- Vendor: McAfee, LLC
- Affected Versions: 11.x versions before 11.3.2.8
Exploitation Mechanism
The vulnerability can be exploited by a local user sending a specifically crafted encrypted message to DLPe, triggering a buffer overflow and causing the system to crash.
Mitigation and Prevention
To address CVE-2019-3634, immediate steps and long-term security practices are essential.
Immediate Steps to Take
- Update McAfee DLPe to version 11.3.2.8 or higher to mitigate the vulnerability.
- Monitor system logs for any unusual activities that might indicate exploitation attempts.
Long-Term Security Practices
- Implement regular security training for users to recognize and report suspicious activities.
- Employ network segmentation to limit the impact of potential breaches.
Patching and Updates
- Regularly apply security patches and updates provided by McAfee to ensure system resilience against known vulnerabilities.