CVE-2018-20136 Explained : Impact and Mitigation

FUEL CMS version 1.4.3 has a cross-site scripting (XSS) vulnerability that can be exploited through the Header or Body in the Layout Variables when creating a new page.

Understanding CVE-2018-20136

This CVE entry describes a cross-site scripting vulnerability in FUEL CMS version 1.4.3.

What is CVE-2018-20136?

CVE-2018-20136 is an XSS vulnerability in FUEL CMS 1.4.3 that allows attackers to execute malicious scripts by injecting them into the Header or Body of Layout Variables during the creation of a new page.

The Impact of CVE-2018-20136

This vulnerability can be exploited by accessing specific URLs, such as pages/edit/1?lang=english, leading to potential script execution and unauthorized actions.

Technical Details of CVE-2018-20136

This section provides technical details of the vulnerability.

Vulnerability Description

The XSS vulnerability in FUEL CMS 1.4.3 allows attackers to inject and execute malicious scripts through the Header or Body in the Layout Variables.

Affected Systems and Versions

Product: FUEL CMS
Version: 1.4.3

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating the Header or Body content in the Layout Variables during the creation of a new page, as demonstrated by the pages/edit/1?lang=english URL.

Mitigation and Prevention

Protecting systems from CVE-2018-20136 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update FUEL CMS to a patched version that addresses the XSS vulnerability.
Avoid accessing suspicious or unknown URLs that could trigger the exploit.

Long-Term Security Practices

Implement input validation mechanisms to sanitize user inputs and prevent XSS attacks.
Regularly monitor and audit the application for security vulnerabilities.

Patching and Updates

Ensure timely installation of security patches and updates provided by FUEL CMS to mitigate the XSS vulnerability.