CVE-2018-19520 : What You Need to Know
Learn about CVE-2018-19520 affecting SDCMS 1.6 with PHP 5.x, allowing attackers to execute arbitrary code. Find mitigation steps and long-term security practices here.
SDCMS 1.6 with PHP 5.x allows for arbitrary code execution through a specific function, posing a security risk.
Understanding CVE-2018-19520
What is CVE-2018-19520?
SDCMS 1.6, when used with PHP 5.x, contains a vulnerability that enables users to execute any code by exploiting access to admin template management.
The Impact of CVE-2018-19520
This vulnerability allows attackers to bypass security measures and execute malicious code, potentially leading to unauthorized access and data breaches.
Technical Details of CVE-2018-19520
Vulnerability Description
The file themecontroller.php in the app/admin/controller directory fails to block the use of preg_replace 'e' calls, enabling users to execute arbitrary code.
Affected Systems and Versions
- Product: SDCMS 1.6
- PHP Version: 5.x
Exploitation Mechanism
Attackers can leverage the check_bad function's failure to prevent specific PHP functions, allowing them to execute any desired code.
Mitigation and Prevention
Immediate Steps to Take
- Update SDCMS to a patched version that addresses the vulnerability.
- Implement strict input validation to prevent code injection attacks.
Long-Term Security Practices
- Regularly monitor and audit admin template management for unauthorized changes.
- Educate users on secure coding practices to prevent code execution vulnerabilities.
Patching and Updates
Apply security patches provided by the software vendor to fix the vulnerability and enhance system security.