CVE-2019-3633 : Security Advisory and Response
Learn about CVE-2019-3633, 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 a "blue screen" error.
A vulnerability called buffer overflow has been discovered in McAfee Data Loss Prevention (DLPe) for Windows 11.x versions older than 11.3.2.8. This vulnerability enables a local user to trigger a "blue screen" error in the Windows operating system by sending a specifically crafted message to DLPe, evading internal checks, and causing DLPe to attempt to read memory that has not been allocated.
Understanding CVE-2019-3633
This CVE involves a buffer overflow vulnerability in McAfee Data Loss Prevention (DLPe) for Windows.
What is CVE-2019-3633?
CVE-2019-3633 is a buffer overflow vulnerability in McAfee Data Loss Prevention (DLPe) for Windows versions prior to 11.3.2.8. It allows a local user to cause a "blue screen" error in the Windows OS by sending a carefully constructed message to DLPe.
The Impact of CVE-2019-3633
- CVSS Base Score: 4.4 (Medium)
- Attack Vector: Local
- Attack Complexity: High
- Privileges Required: Low
- User Interaction: Required
- Availability Impact: High
- Confidentiality Impact: None
- Integrity Impact: None
- Scope: Unchanged
Technical Details of CVE-2019-3633
This section provides more technical insights into the vulnerability.
Vulnerability Description
The vulnerability in DLPe for Windows allows a local user to exploit a buffer overflow, leading to a "blue screen" error in the Windows OS.
Affected Systems and Versions
- Affected Product: Data Loss Prevention (DLPe) for Windows
- Vendor: McAfee, LLC
- Affected Versions: 11.x versions less than 11.3.2.8
Exploitation Mechanism
The vulnerability can be exploited by a local user sending a specially crafted message to DLPe, bypassing internal checks and causing DLPe to read unallocated memory.
Mitigation and Prevention
Protecting systems from CVE-2019-3633 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Update DLPe to version 11.3.2.8 or higher to mitigate the vulnerability.
- Monitor and restrict access to vulnerable systems.
- Educate users on safe computing practices.
Long-Term Security Practices
- Regularly update and patch all software and systems.
- Implement network segmentation to contain potential attacks.
- Conduct regular security audits and assessments.
Patching and Updates
- Apply security patches provided by McAfee promptly.
- Stay informed about security advisories and updates from McAfee.