CVE-2015-3306 — AI Deep Analysis Summary

🚨 **Essence**: ProFTPD's `mod_copy` module allows arbitrary file copying via `SITE CPFR` and `SITE CPTO` commands.…

🛡️ **Root Cause**: Lack of input validation in the `mod_copy` module.…

📦 **Affected Software**: ProFTPD. <br>🔢 **Version**: Specifically **1.3.5** (and potentially earlier versions like 1.3.4a based on test reports). <br>🧩 **Component**: The `mod_copy` module must be enabled.

🕵️ **Hackers Can**: <br>1. **Read**: Access any file readable by the FTP service user (e.g., config files, source code). <br>2. **Write**: Overwrite or create files in arbitrary directories (e.g., web root). <br>3.…

🔑 **Threshold**: **Low**. <br>📝 **Auth**: Requires valid FTP credentials (standard login). <br>⚙️ **Config**: Only requires `mod_copy` to be loaded. No complex configuration bypass needed.…

💣 **Public Exploits**: **YES**. <br>🔗 **Tools**: Multiple PoCs available (e.g., `cpx_proftpd`, `propane`, `CVE-2015-3306` scripts).…

🔍 **Self-Check**: <br>1. **Scan**: Use Nmap or Nessus to detect ProFTPD version and `mod_copy` presence. <br>2. **Test**: Attempt `SITE CPFR` and `SITE CPTO` commands via telnet/nc. <br>3.…

🩹 **Official Fix**: **YES**. <br>📅 **Timeline**: Advisories published in May 2015 (e.g., Fedora updates).…

🚧 **No Patch Workaround**: <br>1. **Disable**: Remove or comment out `LoadModule mod_copy.c` in `proftpd.conf`. <br>2.…

⚡ **Urgency**: **HIGH**. <br>🎯 **Priority**: Critical for any server running ProFTPD with `mod_copy`. <br>📉 **Risk**: Easy exploitation leads to full system compromise. Patch immediately or disable the module.