CVE-2021-37580 — AI Deep Analysis Summary

🚨 **What is this vulnerability?** * **Essence:** Apache ShenYu Admin suffers from an **Authorization Bypass** flaw. * **Mechanism:** Improper use of **JWT** (JSON Web Token) in `ShenyuAdminBootstrap`. * **Conseque…

🛡️ **Root Cause? (CWE/Flaw)** * **CWE ID:** **CWE-287** (Improper Authentication). * **The Flaw:** The JWT implementation is flawed.…

👥 **Who is affected? (Versions/Components)** * **Product:** Apache ShenYu Admin. * **Affected Versions:** * ✅ **2.3.0** * ✅ **2.4.0** * **Fixed Version:** **2.4.1** is confirmed safe.…

💰 **What can hackers do? (Privileges/Data)** * **Direct Access:** Bypass login screens to enter the system background.…

📊 **Is exploitation threshold high? (Auth/Config)** * **Threshold:** **LOW** 📉. * **Authentication:** None required.…

💣 **Is there a public Exp? (PoC/Wild Exploitation)** * **Status:** **YES** 🚨. * **PoCs Available:** Multiple Python scripts and scanners are public on GitHub (e.g., `rabbitsafe`, `fengwenhua`, `ZororoZ`). * **Auto…

🔍 **How to self-check? (Features/Scanning)** * **Manual Test:** Send a crafted JWT header to `GET /dashboardUser`. * **FOFA Search:** Use syntax `fid="uPGDN6V9UWnc+KJdy5wdkQ=="` to find exposed instances.…

🩹 **Is it fixed officially? (Patch/Mitigation)** * **Fix Status:** **YES** ✅. * **Solution:** Upgrade to version **2.4.1** or higher. * **Verification:** Screenshots in PoCs confirm 2.4.1 blocks the bypass.…

🚧 **What if no patch? (Workaround)** * **Network Isolation:** Block external access to the Admin port.…

⏰ **Is it urgent? (Priority Suggestion)** * **Priority:** **CRITICAL** 🔴. * **Reason:** No authentication required + Public PoCs + Admin access gained. * **Action:** Patch immediately.…