CVE-2020-21929 : Exploit Details and Defense Strategies

A stored cross-site scripting (XSS) vulnerability in the web_copyright field of Eyoucms v1.4.1 allows authenticated attackers to execute arbitrary web scripts or HTML.

Understanding CVE-2020-21929

This CVE involves a stored XSS vulnerability in Eyoucms v1.4.1, enabling authenticated attackers to run malicious scripts or HTML.

What is CVE-2020-21929?

This CVE identifies a security flaw in Eyoucms v1.4.1 that permits authenticated malicious users to execute unauthorized web scripts or HTML code.

The Impact of CVE-2020-21929

The vulnerability can lead to unauthorized script execution, potentially compromising the integrity and security of the affected system.

Technical Details of CVE-2020-21929

This section provides technical insights into the vulnerability.

Vulnerability Description

The vulnerability lies in the web_copyright field of Eyoucms v1.4.1, allowing attackers with authentication to inject and execute malicious scripts or HTML.

Affected Systems and Versions

Product: Eyoucms
Version: 1.4.1

Exploitation Mechanism

Attackers need to be authenticated to exploit this vulnerability, gaining the ability to insert and execute malicious scripts or HTML in the web_copyright field.

Mitigation and Prevention

Protective measures to address and prevent exploitation of the vulnerability.

Immediate Steps to Take

Update Eyoucms to the latest version to patch the vulnerability.
Regularly monitor and review user-generated content for malicious scripts.

Long-Term Security Practices

Implement input validation mechanisms to sanitize user inputs effectively.
Conduct regular security audits and penetration testing to identify and address vulnerabilities.

Patching and Updates

Apply security patches promptly to ensure the system is protected against known vulnerabilities.