CVE-2021-31842 : Vulnerability Insights and Analysis
Critical vulnerability (CVE-2021-31842) in McAfee Endpoint Security for Windows enables local users to launch a Denial of Service attack through XML Entity Expansion injection. Learn more here.
A vulnerability has been identified in McAfee Endpoint Security for Windows that could allow a local user to launch a Denial of Service attack by exploiting XML Entity Expansion injection. Here's what you need to know about CVE-2021-31842.
Understanding CVE-2021-31842
XML Entity Expansion injection vulnerability in McAfee Endpoint Security (ENS) for Windows allows a local user to initiate high CPU and memory consumption, resulting in a Denial of Service attack.
What is CVE-2021-31842?
CVE-2021-31842 is a vulnerability in McAfee Endpoint Security for Windows that enables a local user to trigger a Denial of Service attack by manipulating the EPDeploy.xml file during the setup process.
The Impact of CVE-2021-31842
The vulnerability can lead to high CPU and memory usage, causing a Denial of Service condition, thereby impacting system availability.
Technical Details of CVE-2021-31842
This section covers the technical aspects of the CVE, including the vulnerability description, affected systems, and the exploitation mechanism.
Vulnerability Description
The vulnerability arises from an XML Entity Expansion injection in McAfee Endpoint Security for Windows, impacting versions prior to 10.7.0 September 2021 Update.
Affected Systems and Versions
McAfee Endpoint Security (ENS) for Windows versions below 10.7.0 September 2021 Update are susceptible to this vulnerability.
Exploitation Mechanism
A local user can exploit the vulnerability by carefully editing the EPDeploy.xml file and executing the setup process, leading to high resource consumption.
Mitigation and Prevention
To address CVE-2021-31842, immediate action is required to mitigate risks and prevent potential attacks.
Immediate Steps to Take
Users are advised to apply the necessary security updates provided by McAfee to resolve the vulnerability and prevent exploitation.
Long-Term Security Practices
Developing a robust security strategy, including regular software updates and security monitoring, can help prevent similar vulnerabilities in the future.
Patching and Updates
Regularly check for security patches and updates from McAfee to ensure your systems are protected against known vulnerabilities.