CVE-2018-16773 : Security Advisory and Response

EasyCMS 1.5 allows XSS via the index.php?s=/admin/fields/update/navTabId/listfields/callbackType/closeCurrent content field.

Understanding CVE-2018-16773

The content field in index.php?s=/admin/fields/update/navTabId/listfields/callbackType/closeCurrent of EasyCMS 1.5 can be exploited for Cross-Site Scripting (XSS).

What is CVE-2018-16773?

CVE-2018-16773 is a vulnerability in EasyCMS 1.5 that enables attackers to execute Cross-Site Scripting attacks through a specific content field.

The Impact of CVE-2018-16773

This vulnerability allows malicious actors to inject and execute arbitrary scripts on the target system, potentially leading to unauthorized access, data theft, and other security breaches.

Technical Details of CVE-2018-16773

EasyCMS 1.5 is susceptible to XSS attacks due to inadequate input validation in the content field of a specific PHP file.

Vulnerability Description

The issue arises from insufficient sanitization of user-supplied data in the mentioned content field, enabling attackers to embed malicious scripts that get executed in the context of the user's session.

Affected Systems and Versions

Affected Version: EasyCMS 1.5

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting specially crafted scripts into the content field, which, when executed, can compromise the integrity and security of the system.

Mitigation and Prevention

To address CVE-2018-16773 and enhance system security:

Immediate Steps to Take

Implement input validation and output encoding to prevent script injection.
Regularly monitor and audit user inputs for malicious content.
Apply security patches and updates provided by the software vendor.

Long-Term Security Practices

Conduct regular security training for developers to raise awareness of secure coding practices.
Employ web application firewalls to filter and block malicious traffic.

Patching and Updates

Stay informed about security advisories and updates from EasyCMS.
Apply patches promptly to mitigate known vulnerabilities and enhance system resilience.