CVE-2017-20223 — AI Deep Analysis Summary

🚨 **Essence**: Insecure Direct Object Reference (IDOR) in Telesquare SKT LTE Router SDT-CS3B1. <br>💥 **Consequences**: Attackers can bypass authorization and access restricted resources.…

🛡️ **Root Cause**: CWE-639 (Insecure Direct Object Reference). <br>🔍 **Flaw**: The application exposes internal object references without proper access control checks, allowing direct manipulation.

📦 **Affected**: Telesquare SKT LTE Router SDT-CS3B1. <br>📌 **Version**: Specifically Version **1.2.0**. <br>🌏 **Vendor**: Telesquare (South Korea).

🕵️ **Hackers Can**: Bypass authentication/authorization. <br>📂 **Access**: Sensitive data and resources. <br>🔓 **Privileges**: High risk of unauthorized control over the router and connected network.

⚡ **Threshold**: **LOW**. <br>🔑 **Auth**: PR:N (Privileges Required: None). <br>🌐 **Access**: AV:N (Network), AC:L (Low Complexity). No user interaction needed.

💣 **Public Exploit**: **YES**. <br>📂 **Source**: Exploit-DB (ID: 43402). <br>🔗 **Status**: Active PoC available, making exploitation easy for anyone.

🔍 **Self-Check**: Scan for Telesquare SDT-CS3B1 devices. <br>🧪 **Test**: Attempt to access internal API endpoints or resource IDs directly without valid session tokens.…

🩹 **Official Fix**: Data does not list a specific patch date or version. <br>⚠️ **Note**: Published date is listed as 2026-03-16 (Future/Delayed?), but advisory exists from 2017. Check vendor site for latest firmware.

🚧 **Workaround**: <br>1. **Isolate**: Move device to a segmented VLAN. <br>2. **Restrict**: Block external access to management ports. <br>3. **Monitor**: Watch for unusual API calls.

🔥 **Urgency**: **CRITICAL**. <br>📈 **Priority**: High. <br>📉 **Reason**: CVSS 9.1 (Critical), No Auth Required, Public Exploit Exists. Patch immediately or isolate.