CVE-2021-42103 : Security Advisory and Response

Trend Micro Apex One and Apex One as a Service contain uncontrolled search path element vulnerabilities that could lead to privilege escalation by a local attacker. This CVE is related to CVE-2021-42101.

Understanding CVE-2021-42103

This CVE pertains to an uncontrolled search path element privilege escalation vulnerability in Trend Micro Apex One and Apex One as a Service.

What is CVE-2021-42103?

The vulnerability in Trend Micro products may enable a local attacker to elevate privileges on affected systems, requiring prior execution of low-privileged code on the target machine for exploitation.

The Impact of CVE-2021-42103

If exploited, this vulnerability could allow an attacker to escalate their privileges on compromised systems, potentially leading to unauthorized access and control.

Technical Details of CVE-2021-42103

This section provides additional technical insights into the nature of the vulnerability.

Vulnerability Description

The uncontrolled search path element vulnerability in Trend Micro Apex One and Apex One as a Service facilitates privilege escalation for local attackers on affected installations.

Affected Systems and Versions

Product: Trend Micro Apex One
Versions: 2019, SaaS

Exploitation Mechanism

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

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent the exploitation of this vulnerability.

Immediate Steps to Take

Apply security patches provided by Trend Micro promptly.
Monitor for any suspicious activities on the network.
Limit user permissions to minimize the impact of potential attacks.

Long-Term Security Practices

Conduct regular security training for employees to enhance awareness of cybersecurity threats.
Implement network segmentation to contain potential security breaches.
Continuously update and patch all software and systems to mitigate known vulnerabilities.
Consider using intrusion detection and prevention systems to bolster security defenses.
Employ proactive threat hunting to identify and mitigate potential security risks.

Patching and Updates

Regularly check for updates and patches released by Trend Micro to address this vulnerability and ensure the security of your systems.