CVE-2018-18835 : What You Need to Know

DocCms 2016.5.12 upload_template() function vulnerability allows remote attackers to execute malicious PHP code.

Understanding CVE-2018-18835

What is CVE-2018-18835?

The upload_template() function in system/changeskin.php in DocCms 2016.5.12 has a vulnerability that enables remote attackers to execute malicious PHP code through a template file.

The Impact of CVE-2018-18835

This vulnerability can be exploited by remote attackers to execute arbitrary PHP code, potentially leading to unauthorized access and data breaches.

Technical Details of CVE-2018-18835

Vulnerability Description

The upload_template() function in DocCms 2016.5.12 allows remote attackers to execute arbitrary PHP code via a template file.

Affected Systems and Versions

Product: DocCms 2016.5.12
Vendor: N/A
Version: N/A

Exploitation Mechanism

Attackers can exploit this vulnerability by uploading a malicious template file to the system, which can then be executed to run arbitrary PHP code.

Mitigation and Prevention

Immediate Steps to Take

Disable the upload_template() function if not essential for system operation.
Implement input validation to prevent unauthorized file uploads.
Regularly monitor system files for any unauthorized changes.

Long-Term Security Practices

Conduct regular security audits and penetration testing to identify and address vulnerabilities.
Keep software and systems up to date with the latest security patches.
Educate users on safe coding practices and the risks of file uploads.

Patching and Updates

Ensure that DocCms is updated to a patched version that addresses the upload_template() function vulnerability.