CVE-2018-19404 : Exploit Details and Defense Strategies

YXcms version 1.4.7 contains a vulnerability that allows authenticated Administrators to execute arbitrary PHP code remotely by exploiting the onlineinstall functionality.

Understanding CVE-2018-19404

This CVE involves a specific vulnerability in the YXcms application that enables attackers to execute malicious PHP code.

What is CVE-2018-19404?

The vulnerability in YXcms version 1.4.7 allows authenticated Administrators to run arbitrary PHP code remotely by manipulating the onlineinstall functionality.

The Impact of CVE-2018-19404

This vulnerability poses a significant risk as it enables attackers to execute malicious PHP code on the affected system, potentially leading to unauthorized access and data compromise.

Technical Details of CVE-2018-19404

YXcms version 1.4.7 is susceptible to a specific exploitation method that allows for the execution of unauthorized PHP code.

Vulnerability Description

The vulnerability resides in the indexController.php file within the appmanage/controller directory, enabling the execution of arbitrary PHP code by authenticated Administrators.

Affected Systems and Versions

Product: YXcms
Version: 1.4.7

Exploitation Mechanism

To exploit this vulnerability, an attacker must:

Create a ZIP archive containing a file named config.php.
Host the ZIP file on an external URL.
Visit the URL: index.php?r=appmanage/index/onlineinstall&url=[hosted zip file URL].

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risks associated with CVE-2018-19404.

Immediate Steps to Take

Disable the onlineinstall and import functionalities within the YXcms application.
Implement strict access controls and authentication mechanisms.

Long-Term Security Practices

Regularly update and patch the YXcms application to address known vulnerabilities.
Conduct security audits and code reviews to identify and remediate potential security flaws.

Patching and Updates

Apply patches and updates provided by the YXcms vendor to fix the vulnerability and enhance the overall security posture of the application.