CVE-2021-25226 Explained : Impact and Mitigation

A memory exhaustion vulnerability in Trend Micro ServerProtect for Linux 3.0 could allow a local attacker to craft specific files that can cause a denial-of-service on the affected product. This flaw exists within a scan engine component, requiring the attacker to first execute low-privileged code on the target system to exploit the vulnerability.

Understanding CVE-2021-25226

This section provides insights into the nature of the vulnerability and its potential impact.

What is CVE-2021-25226?

CVE-2021-25226 is a memory exhaustion vulnerability in Trend Micro ServerProtect for Linux 3.0 that enables a local attacker to create malicious files leading to a denial-of-service condition. The attacker needs initial access to execute restricted code on the target system.

The Impact of CVE-2021-25226

Exploitation of this vulnerability could result in a denial-of-service scenario, rendering the affected Trend Micro ServerProtect for Linux 3.0 product inoperable and disrupting normal system functionality.

Technical Details of CVE-2021-25226

In this section, we delve deeper into the specifics of the vulnerability, including affected systems, and the mechanism of exploitation.

Vulnerability Description

The vulnerability arises from a memory exhaustion flaw within the scan engine component of Trend Micro ServerProtect for Linux 3.0. By crafting specific files, a local attacker can trigger a denial-of-service situation on the targeted product.

Affected Systems and Versions

Trend Micro ServerProtect for Linux version 3.0 is specifically impacted by this vulnerability.

Exploitation Mechanism

To exploit CVE-2021-25226, an attacker must first gain the capability to execute low-privileged code on the targeted system, allowing them to manipulate files and trigger the denial-of-service condition.

Mitigation and Prevention

This section outlines the necessary steps to mitigate the risks posed by CVE-2021-25226 and prevent exploitation.

Immediate Steps to Take

Users are advised to update Trend Micro ServerProtect for Linux to a patched version or implement relevant security measures to minimize the risk of exploitation.

Long-Term Security Practices

To enhance long-term security, organizations should regularly update security software, educate users on best security practices, and conduct vulnerability assessments.

Patching and Updates

Vendor-provided patches should be promptly applied to affected systems to ensure protection against memory exhaustion vulnerabilities and other security threats.