From FTP Flaw to System Control: How ProFTPD Vulnerabilities Enable Root Access

This technical walkthrough demonstrates a fundamental principle in offensive security: how individual vulnerabilities become devastating when combined into exploit chains. The ProFTPD mod_copy vulnerability (CVE-2015-3306) alone merely permits file copying, but when paired with web server code execution capabilities, it becomes a pathway to remote code execution and system compromise. Understanding such vulnerability chaining is critical for both authorized penetration testers and defenders preparing against real-world attack scenarios.