CVE-2021-39420 : What You Need to Know

Cross Site Scripting (XSS) vulnerabilities in VFront 0.99.5 allow attacks via specific parameters.

Understanding CVE-2021-39420

Vulnerabilities in VFront 0.99.5 expose systems to XSS attacks through certain parameters.

What is CVE-2021-39420?

Multiple XSS vulnerabilities in VFront 0.99.5 enable attacks using the 's' parameter in search_all.php and the 'msg' parameter in add.attach.php.

The Impact of CVE-2021-39420

These vulnerabilities can be exploited by attackers to inject malicious scripts into web pages viewed by users, leading to various attacks such as data theft, cookie manipulation, and session hijacking.

Technical Details of CVE-2021-39420

VFront 0.99.5 vulnerabilities are detailed below.

Vulnerability Description

The vulnerabilities allow attackers to execute arbitrary scripts in a victim's browser, compromising the confidentiality and integrity of the affected systems.

Affected Systems and Versions

Vendor: n/a
Product: n/a
Version: n/a

Exploitation Mechanism

Attackers exploit these vulnerabilities by manipulating the 's' parameter in search_all.php and the 'msg' parameter in add.attach.php to inject and execute malicious scripts.

Mitigation and Prevention

Protect your systems from CVE-2021-39420 using the following measures.

Immediate Steps to Take

Regularly update VFront to the latest version to patch known vulnerabilities.
Implement input validation to filter and sanitize user inputs, preventing malicious scripts execution.

Long-Term Security Practices

Conduct regular security audits and penetration testing to identify and address vulnerabilities proactively.
Educate users on the dangers of clicking suspicious links and downloading files from untrusted sources.

Patching and Updates

Stay informed about security updates for VFront and promptly apply patches to eliminate known vulnerabilities.