CVE-2021-41291 — AI Deep Analysis Summary

🚨 **Essence**: A **Directory Traversal** flaw in Ecoa BAS controllers. <br>💥 **Consequences**: Attackers can remotely **disclose directory contents** without permission.…

🛡️ **Root Cause**: **CWE-22** (Improper Limitation of a Pathname to a Restricted Directory).…

🏢 **Affected Vendor**: **ECOA Technologies Corp**. <br>📦 **Product**: **Ecoa BAS Controller** (specifically ECS Router Controller ECS (FLASH)). <br>⚠️ **Scope**: Building automation devices from this manufacturer.

🕵️ **Attacker Action**: Remote **Content Disclosure**. <br>📂 **Data Risk**: Can view the **directory structure** and file listings on the affected device.…

⚡ **Threshold**: **LOW**. <br>🔑 **Auth**: **None required** (PR:N). <br>🌐 **Network**: Remote (AV:N). <br>🎯 **Complexity**: Low (AC:L). <br>👤 **User Interaction**: None (UI:N).…

💻 **Public Exploit**: **YES**. <br>📜 **PoC**: Available via **ProjectDiscovery Nuclei templates**. <br>🔗 **Link**: `http/cves/2021/CVE-2021-41291.yaml`.…

🔍 **Self-Check Method**: <br>1. Use **Nuclei** with the specific CVE template. <br>2. Send a GET request to the **File Manager** (`fmangersub`). <br>3. Inject `../` into the **`cpath`** parameter. <br>4.…

🩹 **Official Fix**: The data indicates a **Public Disclosure** (2021-09-30). <br>📝 **Mitigation**: Check vendor advisories for patches.…

🛑 **No Patch Workaround**: <br>1. **Block Access**: Restrict network access to the File Manager endpoint. <br>2. **WAF Rules**: Block requests containing `../` in the `cpath` parameter. <br>3.…

🔥 **Urgency**: **HIGH**. <br>📉 **CVSS**: **7.5** (High). <br>⚠️ **Reason**: No auth needed + Remote + High Info Leak. <br>🚀 **Action**: Prioritize immediate network isolation and patching if available. Do not ignore!