CVE-2021-42752 : Vulnerability Insights and Analysis

A vulnerability in Fortinet FortiWLM versions 8.6.1 and below could allow attackers to execute malicious JavaScript code through crafted HTTP requests.

Understanding CVE-2021-42752

What is CVE-2021-42752?

The vulnerability involves improper neutralization of input during web page generation (cross-site scripting) in Fortinet FortiWLM, enabling the execution of malicious JavaScript code on a victim's host.

The Impact of CVE-2021-42752

The impact ranges from low to medium severity, affecting confidentiality and integrity due to the execution of unauthorized code or commands.

Technical Details of CVE-2021-42752

Vulnerability Description

The vulnerability allows attackers to execute malicious JavaScript code by exploiting cross-site scripting in Fortinet FortiWLM versions 8.6.1 and below.

Affected Systems and Versions

Product: Fortinet FortiWLM
Vendor: Fortinet
Versions Affected: 8.6.1, 8.6.0, 8.5.2, 8.5.1, 8.5.0, 8.4.2, 8.4.1, 8.4.0, 8.3.2, 8.3.1, 8.3.0, 8.2.2

Exploitation Mechanism

The vulnerability can be exploited by sending crafted HTTP requests to inject and execute malicious JavaScript code.

Mitigation and Prevention

Immediate Steps to Take

Apply security patches provided by Fortinet for the affected versions.
Regularly monitor network traffic for any signs of malicious activities.

Long-Term Security Practices

Implement proper input validation mechanisms to prevent cross-site scripting attacks.
Educate users and administrators about the risks of executing scripts from untrusted sources.

Patching and Updates

Ensure that all Fortinet FortiWLM instances are updated with the latest security patches to mitigate the vulnerability.