CVE-2018-18943 : Security Advisory and Response

A vulnerability was found in baserCMS prior to version 4.1.4, allowing for cross-site scripting (XSS) attacks in the Register New Category function.

Understanding CVE-2018-18943

This CVE identifies a security flaw in baserCMS that could be exploited by attackers to perform XSS attacks.

What is CVE-2018-18943?

This CVE pertains to a vulnerability in baserCMS versions before 4.1.4 that enables attackers to execute XSS attacks through manipulation of specific parameters.

The Impact of CVE-2018-18943

The vulnerability allows malicious actors to inject and execute arbitrary scripts in the context of an admin session, potentially leading to unauthorized actions or data theft.

Technical Details of CVE-2018-18943

This section provides detailed technical insights into the vulnerability.

Vulnerability Description

The flaw exists in the Register New Category feature of the Upload menu, where the attacker can exploit the data[UploaderCategory][name] parameter to execute XSS attacks.

Affected Systems and Versions

Product: baserCMS
Versions affected: All versions prior to 4.1.4

Exploitation Mechanism

By manipulating the data[UploaderCategory][name] parameter through the admin/uploader/uploader_categories/edit URI, attackers can inject malicious scripts.

Mitigation and Prevention

Protecting systems from CVE-2018-18943 requires immediate actions and long-term security practices.

Immediate Steps to Take

Upgrade baserCMS to version 4.1.4 or later to mitigate the vulnerability.
Implement input validation mechanisms to sanitize user inputs and prevent XSS attacks.

Long-Term Security Practices

Regularly update and patch software to address security vulnerabilities promptly.
Conduct security audits and penetration testing to identify and remediate potential weaknesses.

Patching and Updates

Ensure timely installation of security patches and updates to keep systems secure.