CVE-2021-44024 : Exploit Details and Defense Strategies

Trend Micro Apex One and Worry-Free Business Security are affected by a denial-of-service vulnerability, allowing a local attacker to overwrite files in the context of SYSTEM.

Understanding CVE-2021-44024

This CVE involves a link-following denial-of-service vulnerability affecting Trend Micro products.

What is CVE-2021-44024?

This CVE pertains to a security flaw in Trend Micro Apex One and Trend Micro Worry-Free Business Security, enabling a local attacker to overwrite arbitrary files.

The Impact of CVE-2021-44024

The vulnerability allows attackers with low-privileged code execution on a target system to compromise its security by overwriting files.

Technical Details of CVE-2021-44024

This section delves into the specific technical aspects of the vulnerability.

Vulnerability Description

A denial-of-service vulnerability in Trend Micro Apex One and Worry-Free Business Security permits local attackers to overwrite files as SYSTEM.

Affected Systems and Versions

Trend Micro Apex One 2019, SaaS
Trend Micro Worry-Free Business Security 10.0 SP1, Services (SaaS)

Exploitation Mechanism

To exploit this vulnerability, the attacker must first gain the ability to execute low-privileged code on the target system.

Mitigation and Prevention

Protecting systems from this CVE requires immediate action and long-term security practices.

Immediate Steps to Take

Apply patches provided by Trend Micro promptly.
Ensure that all users follow the principle of least privilege.
Monitor and restrict network traffic to potentially affected systems.

Long-Term Security Practices

Regularly update and patch all software and systems.
Conduct security training for users and administrators.
Implement robust network segmentation and access controls.

Patching and Updates

Trend Micro may release patches or security updates to address this vulnerability.