CVE-2021-31844 : Exploit Details and Defense Strategies
Learn about CVE-2021-31844, a high severity vulnerability in McAfee DLP Endpoint for Windows allowing local privilege escalation. Find mitigation steps and update recommendations.
A buffer overflow vulnerability in McAfee Data Loss Prevention (DLP) Endpoint for Windows allows a local attacker to execute arbitrary code with elevated privileges.
Understanding CVE-2021-31844
This CVE describes a critical vulnerability in McAfee Data Loss Prevention (DLP) Endpoint for Windows that could lead to local privilege escalation.
What is CVE-2021-31844?
The vulnerability exists in versions prior to 11.6.200 of McAfee DLP Endpoint for Windows. It enables a local attacker to trigger code execution with elevated privileges by placing specially crafted files on the system.
The Impact of CVE-2021-31844
With a CVSS base score of 8.2, this high severity vulnerability can allow attackers to execute malicious code with elevated privileges, potentially leading to significant data breaches and system compromise.
Technical Details of CVE-2021-31844
This section covers the technical aspects of the CVE.
Vulnerability Description
The vulnerability results from a buffer overflow issue in the DLP Endpoint scan process triggered by accessing specific file formats. Insufficient checks on buffer sizes could enable attackers to manipulate the system's memory and execute arbitrary code.
Affected Systems and Versions
McAfee DLP Endpoint for Windows versions prior to 11.6.200 are impacted by this vulnerability. Users with affected versions are at risk of local privilege escalation attacks.
Exploitation Mechanism
Attackers can exploit this vulnerability by placing specially crafted files, such as Ami Pro (.sam) files, on the target system. By triggering a DLP Endpoint scan through file access, they can execute malicious code with elevated privileges.
Mitigation and Prevention
Protect your systems against CVE-2021-31844 to ensure the security of your data and infrastructure.
Immediate Steps to Take
Update McAfee DLP Endpoint for Windows to version 11.6.200 or later to patch the vulnerability. Additionally, restrict access to system files to minimize the risk of exploitation.
Long-Term Security Practices
Implement robust security measures, such as regular software updates, intrusion detection systems, and access controls, to safeguard your systems against similar vulnerabilities in the future.
Patching and Updates
Stay informed about security updates from McAfee and apply patches promptly to protect your systems from known vulnerabilities.