CVE-2020-18657 : Vulnerability Insights and Analysis

Get insights into the Cross Site Scripting (XSS) vulnerability in GetSimpleCMS <= 3.3.15 and how to mitigate it.

Understanding CVE-2020-18657

This CVE involves a Cross Site Scripting (XSS) vulnerability in GetSimpleCMS <= 3.3.15.

What is CVE-2020-18657?

The vulnerability exists in the admin/changedata.php file of GetSimpleCMS <= 3.3.15 due to improper handling of the redirect_url parameter and the headers_sent function, allowing attackers to execute malicious scripts.

The Impact of CVE-2020-18657

Attackers can exploit this vulnerability to inject and execute malicious scripts, leading to unauthorized actions on the affected system.

Technical Details of CVE-2020-18657

Learn more about the technical aspects of this vulnerability.

Vulnerability Description

The XSS vulnerability in GetSimpleCMS <= 3.3.15 allows attackers to inject and execute malicious scripts via the redirect_url parameter and headers_sent function in admin/changedata.php.

Affected Systems and Versions

GetSimpleCMS versions up to and including 3.3.15 are affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating the redirect_url parameter and headers_sent function to inject and execute malicious scripts.

Mitigation and Prevention

Discover the steps to mitigate and prevent exploitation of CVE-2020-18657.

Immediate Steps to Take

Update GetSimpleCMS to version 3.3.16 or later to patch the vulnerability.
Avoid clicking on suspicious links or visiting untrusted websites to minimize the risk of XSS attacks.

Long-Term Security Practices

Regularly monitor and audit web applications for vulnerabilities like XSS.
Educate users and developers on secure coding practices to prevent XSS vulnerabilities.

Patching and Updates

Stay informed about security updates and patches released by GetSimpleCMS to address known vulnerabilities.