CVE-2020-36413 : Security Advisory and Response

A stored cross scripting (XSS) vulnerability in CMS Made Simple 2.2.14 allows authenticated attackers to execute arbitrary web scripts or HTML via a crafted payload entered into the "Exclude these IP addresses from the "Site Down" status" parameter under the "Maintenance Mode" module.

Understanding CVE-2020-36413

This CVE involves a stored XSS vulnerability in CMS Made Simple 2.2.14 that can be exploited by authenticated attackers to execute malicious scripts or HTML.

What is CVE-2020-36413?

This CVE refers to a specific vulnerability in CMS Made Simple 2.2.14 that enables attackers with authentication to run arbitrary web scripts or HTML through a manipulated payload.

The Impact of CVE-2020-36413

The vulnerability allows attackers to inject and execute malicious scripts or HTML code, potentially leading to various security risks such as data theft, unauthorized access, and website defacement.

Technical Details of CVE-2020-36413

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability arises from improper input validation in the "Exclude these IP addresses from the "Site Down" status" parameter within the "Maintenance Mode" module of CMS Made Simple 2.2.14.

Affected Systems and Versions

Affected Version: CMS Made Simple 2.2.14
Systems: Any system running the vulnerable version of CMS Made Simple

Exploitation Mechanism

Attackers with authenticated access can exploit this vulnerability by inserting a specially crafted payload into the affected parameter, enabling the execution of malicious scripts or HTML.

Mitigation and Prevention

Protecting systems from this vulnerability requires immediate actions and long-term security practices.

Immediate Steps to Take

Update CMS Made Simple to the latest patched version
Implement strict input validation mechanisms
Monitor and restrict access to critical modules

Long-Term Security Practices

Regular security audits and code reviews
Employee training on secure coding practices
Implementing a web application firewall

Patching and Updates

Ensure timely installation of security patches and updates for CMS Made Simple to address known vulnerabilities.