CVE-2018-17418 : Security Advisory and Response
Learn about CVE-2018-17418, a critical vulnerability in Monstra CMS 3.0.4 allowing remote attackers to execute PHP code. Find mitigation steps and best practices for enhanced system security.
Monstra CMS 3.0.4 allows remote attackers to execute arbitrary PHP code via a mixed-case file extension, leading to a critical vulnerability.
Understanding CVE-2018-17418
This CVE entry describes a security flaw in Monstra CMS 3.0.4 that enables remote attackers to execute PHP code of their choice.
What is CVE-2018-17418?
This vulnerability occurs when a file with a mixed-case extension, such as "123.PhP," is processed by the filesmanager.admin.php file within the plugins/box/filesmanager/ directory. The issue stems from the mishandling of the forbidden_types variable.
The Impact of CVE-2018-17418
The vulnerability allows remote attackers to execute PHP code, potentially leading to unauthorized access, data theft, and further exploitation of the affected system.
Technical Details of CVE-2018-17418
Monstra CMS 3.0.4 is susceptible to a critical security flaw that can be exploited by attackers.
Vulnerability Description
The vulnerability in Monstra CMS 3.0.4 enables remote attackers to execute arbitrary PHP code by manipulating file extensions.
Affected Systems and Versions
- Product: Monstra CMS 3.0.4
- Vendor: N/A
- Versions: N/A
Exploitation Mechanism
Attackers can exploit this vulnerability by uploading a file with a mixed-case extension to the filesmanager.admin.php file within the plugins/box/filesmanager/ directory.
Mitigation and Prevention
To address CVE-2018-17418 and enhance system security, follow these mitigation steps:
Immediate Steps to Take
- Disable file uploads with mixed-case extensions in Monstra CMS.
- Regularly monitor and review file uploads for suspicious activity.
- Implement strict file type validation to prevent unauthorized file execution.
Long-Term Security Practices
- Keep Monstra CMS and all plugins up to date to patch known vulnerabilities.
- Conduct regular security audits and penetration testing to identify and address potential weaknesses.
Patching and Updates
- Apply security patches provided by Monstra CMS promptly to mitigate the vulnerability and enhance system security.