CVE-2021-23887 : Vulnerability Insights and Analysis
Learn about CVE-2021-23887, a high severity privilege escalation vulnerability in McAfee Data Loss Prevention (DLP) Endpoint for Windows. Understand its impact, affected systems, and mitigation steps.
A privilege escalation vulnerability in McAfee Data Loss Prevention (DLP) Endpoint for Windows prior to version 11.6.100 allows a local, low-privileged attacker to write to arbitrary controlled kernel addresses by exploiting the hdlphook driver.
Understanding CVE-2021-23887
This CVE relates to a high severity privilege escalation vulnerability affecting McAfee Data Loss Prevention (DLP) Endpoint for Windows.
What is CVE-2021-23887?
The vulnerability in McAfee DLP Endpoint for Windows allows a local attacker to write to controlled kernel addresses, potentially leading to privilege escalation.
The Impact of CVE-2021-23887
With a CVSS base score of 7.8, this high severity vulnerability could result in unauthorized users gaining elevated privileges, compromising the confidentiality, integrity, and availability of affected systems.
Technical Details of CVE-2021-23887
This section delves deeper into the technical aspects of the vulnerability
Vulnerability Description
The vulnerability allows a low-privileged local attacker to write to arbitrary kernel addresses by manipulating monitored applications through the hdlphook driver.
Affected Systems and Versions
McAfee Data Loss Prevention (DLP) Endpoint for Windows versions below 11.6.100.41 are affected by this privilege escalation vulnerability.
Exploitation Mechanism
An attacker can exploit this vulnerability by launching applications, suspending them, modifying memory, and restarting them while being monitored by McAfee DLP.
Mitigation and Prevention
Learn how to protect your systems from this critical security threat
Immediate Steps to Take
Ensure that McAfee DLP Endpoint for Windows is updated to version 11.6.100.41 or newer to mitigate the privilege escalation vulnerability. Monitor system activity for any signs of unauthorized access.
Long-Term Security Practices
Implement least privilege access, regularly update security software, and conduct security awareness training to enhance overall security posture.
Patching and Updates
Stay informed about security updates from McAfee and apply patches promptly to address known vulnerabilities.