CVE-2021-44023 : Security Advisory and Response

A denial-of-service vulnerability in Trend Micro Security (Consumer) 2021 allows attackers to manipulate files via symlinks, potentially leading to a denial-of-service attack.

Understanding CVE-2021-44023

This CVE involves a link following denial-of-service vulnerability in Trend Micro Security (Consumer) 2021.

What is CVE-2021-44023?

The vulnerability in Trend Micro Security (Consumer) 2021 permits attackers to exploit the PC Health Checkup feature, creating symlinks for file modification that could result in a denial-of-service.

The Impact of CVE-2021-44023

Exploiting this vulnerability could lead to unauthorized file modifications through symlinks, potentially causing a denial-of-service on the affected systems.

Technical Details of CVE-2021-44023

This section dives into the technical aspects of the CVE.

Vulnerability Description

The vulnerability allows attackers to abuse the PC Health Checkup feature to create symlinks, enabling unauthorized file modifications and opening the door to a denial-of-service attack.

Affected Systems and Versions

Affected Product: Trend Micro Security (Consumer) 2021 (v17)

Exploitation Mechanism

By utilizing the PC Health Checkup feature in Trend Micro Security (Consumer) 2021, attackers can create symlinks that facilitate file modification, potentially resulting in a denial-of-service incident.

Mitigation and Prevention

Protecting systems from CVE-2021-44023 requires immediate actions and long-term security practices.

Immediate Steps to Take

Implement security patches provided by Trend Micro promptly.
Monitor system logs for any unusual symlink creation or file modification activities.
Restrict user permissions to prevent unauthorized file changes.

Long-Term Security Practices

Regularly update Trend Micro Security to the latest version to address known vulnerabilities.
Conduct security audits to identify and mitigate potential weaknesses in the system.

Patching and Updates

Trend Micro Security users should apply all security patches and updates released by the vendor.