CVE-2019-5311 Explained : Impact and Mitigation

A security flaw was identified in YUNUCMS V1.1.8 that allows for a cross-site scripting (XSS) vulnerability.

Understanding CVE-2019-5311

This CVE involves a specific vulnerability in YUNUCMS V1.1.8.

What is CVE-2019-5311?

YUNUCMS V1.1.8 is susceptible to a cross-site scripting (XSS) vulnerability due to improper handling of the "cw" parameter in the index.php/index/show/index path.

The Impact of CVE-2019-5311

This vulnerability could allow attackers to execute malicious scripts in the context of the user's browser, potentially leading to various attacks such as session hijacking, defacement, or data theft.

Technical Details of CVE-2019-5311

YUNUCMS V1.1.8 vulnerability details.

Vulnerability Description

The file show.php in the app/index/controller directory contains the XSS vulnerability when processing the "cw" parameter.

Affected Systems and Versions

Product: YUNUCMS
Version: 1.1.8

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious scripts through the "cw" parameter in the specified path.

Mitigation and Prevention

Protect your systems from CVE-2019-5311.

Immediate Steps to Take

Apply security patches provided by the vendor promptly.
Implement input validation to sanitize user-supplied data.
Monitor and filter user inputs to detect and block malicious scripts.

Long-Term Security Practices

Regularly update and patch your CMS and related components.
Conduct security audits and penetration testing to identify and address vulnerabilities.
Educate developers and users about secure coding practices and the risks of XSS attacks.
Utilize web application firewalls (WAFs) to filter and block malicious traffic.

Patching and Updates

Ensure that you stay informed about security updates and patches released by the YUNUCMS vendor to address the XSS vulnerability.