CVE-2015-2856 — AI Deep Analysis Summary

🚨 **Essence**: A directory traversal flaw in Accellion FTA's `function.inc` file. 📉 **Consequences**: Remote attackers can read arbitrary files on the server, leading to potential data leaks or further system compromise.

🛠️ **Root Cause**: The `template` function in `function.inc` fails to properly sanitize input. ⚠️ **Flaw**: Lack of path validation allows `../` sequences to escape intended directories.

🏢 **Vendor**: Accellion. 📦 **Product**: File Transfer Appliance (FTA). 📅 **Affected Versions**: All versions prior to **FTA_9_11_210**. 🚫 **Safe**: Version 9_11_210 and above.

🕵️ **Action**: Read arbitrary files. 🔓 **Privileges**: Remote, unauthenticated access to sensitive system files. 📂 **Data**: Configuration files, credentials, or other restricted data stored on the appliance.

📉 **Threshold**: **LOW**. 🌐 **Auth**: Remote exploitation is possible without authentication. ⚙️ **Config**: Standard HTTP access is sufficient to trigger the vulnerability.

🔓 **Exploit**: Yes. 📜 **Source**: Public exploit available via Rapid7 (Metasploit module: `auxiliary/scanner/http/accellion_fta_statecode_file_read`). 🌍 **Status**: Wild exploitation is feasible.

🔍 **Check**: Scan for Accellion FTA services. 🧪 **Test**: Use the Rapid7 scanner module to attempt file read via the `template` parameter.…

🛡️ **Fix**: Yes. 🔄 **Patch**: Upgrade to **Accellion FTA version 9_11_210** or later. ✅ **Status**: Official mitigation provided by the vendor.

🚧 **Workaround**: If patching is delayed, restrict HTTP access to the FTA interface. 🚫 **Network**: Block external access to the vulnerable endpoint.…

🔥 **Priority**: **HIGH**. ⚡ **Urgency**: Critical risk due to remote, unauthenticated file read. 🚀 **Action**: Patch immediately or apply strict network controls to prevent unauthorized access.