CVE-2021-25247 : Vulnerability Insights and Analysis

A DLL hijacking vulnerability in Trend Micro HouseCall for Home Networks version 5.3.1063 and below could allow an attacker to escalate privileges and execute arbitrary code, requiring prior user privileges to exploit.

Understanding CVE-2021-25247

This section provides insights into the vulnerability's nature, impact, and technical details.

What is CVE-2021-25247?

The CVE-2021-25247 vulnerability is a DLL hijacking issue in Trend Micro HouseCall for Home Networks versions 5.3.1063 and earlier. Attackers could leverage a malicious DLL to gain elevated privileges and execute unauthorized code on the target system.

The Impact of CVE-2021-25247

The vulnerability poses a significant risk as it allows threat actors to potentially execute malicious activities on compromised systems, leading to data theft, system manipulation, or complete takeover.

Technical Details of CVE-2021-25247

In this section, we delve into specific technical aspects of the CVE, including the vulnerability description, affected systems, and the exploitation mechanism.

Vulnerability Description

The DLL hijacking flaw in Trend Micro HouseCall for Home Networks version 5.3.1063 and earlier enables attackers to manipulate DLL loading to execute arbitrary code with escalated privileges.

Affected Systems and Versions

Trend Micro HouseCall for Home Networks versions 5.3.1063 and below are susceptible to this security issue, placing users of these versions at risk of exploitation.

Exploitation Mechanism

To exploit CVE-2021-25247, threat actors must first gain user privileges on the target system before deploying a malicious DLL to achieve privilege escalation and execute unauthorized code.

Mitigation and Prevention

To protect systems from CVE-2021-25247, immediate actions, long-term security practices, and patching procedures are crucial.

Immediate Steps to Take

Users should update Trend Micro HouseCall for Home Networks to a secure version, monitor system activity for anomalies, and restrict unnecessary user privileges to mitigate immediate risks.

Long-Term Security Practices

Implementing robust security protocols, conducting regular security assessments, and staying informed about emerging threats are essential for long-term defense against similar vulnerabilities.

Patching and Updates

Regularly applying security patches, staying abreast of vendor notifications, and maintaining updated security measures are critical to preventing DLL hijacking exploits and securing systems against evolving threats.