CVE-2020-20699 : Exploit Details and Defense Strategies

A cross site scripting (XSS) vulnerability in S-CMS PHP v3.0 allows attackers to execute arbitrary web scripts or HTML via a crafted payload entered into the Copyright text box under Basic Settings.

Understanding CVE-2020-20699

This CVE involves a security issue in S-CMS PHP v3.0 that enables malicious actors to run unauthorized scripts or HTML code through a specific input field.

What is CVE-2020-20699?

The vulnerability in S-CMS PHP v3.0 permits attackers to inject and execute malicious web scripts or HTML content by manipulating the Copyright text box within the Basic Settings.

The Impact of CVE-2020-20699

This vulnerability can lead to cross site scripting attacks, enabling threat actors to perform various malicious activities such as stealing sensitive data, session hijacking, or defacing websites.

Technical Details of CVE-2020-20699

The technical aspects of this CVE are as follows:

Vulnerability Description

Type: Cross Site Scripting (XSS)
Affected Version: S-CMS PHP v3.0
Attack Vector: Crafted payload in the Copyright text box

Affected Systems and Versions

Product: S-CMS PHP v3.0
Vendor: N/A
Version: N/A

Exploitation Mechanism

Attackers exploit the vulnerability by inserting a specially crafted payload into the Copyright text box under Basic Settings, allowing them to execute unauthorized scripts or HTML.

Mitigation and Prevention

To address CVE-2020-20699, consider the following steps:

Immediate Steps to Take

Disable or sanitize user inputs to prevent script injection.
Regularly monitor and audit website content for malicious scripts.

Long-Term Security Practices

Implement input validation and output encoding to mitigate XSS vulnerabilities.
Educate developers and administrators on secure coding practices.

Patching and Updates

Apply patches or updates provided by the software vendor to fix the XSS vulnerability in S-CMS PHP v3.0.